Abstract

The invention relates to a method for repairing a region (30) to be repaired, extending over the lower surface (29) of a side wall (22, 26) of the enclosure of a glass melting furnace (10), the method comprising the following steps: a) installing an inner formwork (32) comprising a flexible textile element (50) and a stiffening element (52) intended to reinforce the inner formwork, so as to form a mould (36) around the region to be repaired; b) filling the mould with a repair product (41) until reaching a service configuration; wherein, in step a), the textile element is rigidly attached to the furnace, the textile element being shaped so as to exert, on the stiffening element, in the service configuration, a force (R) opposing the thrust (P) exerted by the repair product on the stiffening element.

IPC Classes  ?

• C03B 5/42 - Details of construction of furnace walls, e.g. to prevent corrosionUse of materials for furnace walls
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• F27D 1/16 - Making or repairing linings

Abstract

A kiln furniture for a powder includes an alkali, in particular Li, including a porous ceramic body forming a cavity or a container for the powder, wherein the ceramic body with open porosity of between 10 and 40% and with equivalent pore diameter between 0.5 and 25 micrometers is coated on at least part of its inner surface with a ceramic coating, the coating including a compound selected from alumina, a lithium aluminate optionally including silicon optionally silicon, aa magnesia-alumina spinel, zirconia, optionally stabilized, hafnia, yttria; having an average thickness of between 50 and 500 micrometers; a total porosity of less than 15% by volume and a volume fraction of pores of diameter greater than or equal to 2 micrometers that is less than 2.5%.

IPC Classes  ?

• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof

Abstract

A method for manufacturing a diboride powder MB2 by dry route where M is a chemical element belonging to group 4 of the periodic table, from the reduction of an oxide MO2 of the element M according to the balance reaction MO2+B2O3+yR+xA2O→MB2+A2xRYO5+x, wherein R is a reducing element selected from Al, Si, Ti, Zr, Hf, Y, Sc, and the lanthanides and A2O is an oxide of alkali element A.

IPC Classes  ?

• C01B 35/04 - Metal borides
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides

Abstract

The invention relates to a method for repairing, in a hot state, a region of a tank in a glass furnace, referred to as the “region to be repaired”, by means of a repair product (P), the method involving the following steps, at a temperature greater than 300° C.: a) defining a receiving space in the region to be repaired, referred to as the “region to be filled”, the region to be filled (10) having a bottom (12; 12′); b) coating the bottom, the coating time, from the start of the introduction of the repair product into the region to be filled to the time at which the bottom is completely covered with the repair product, lasting less than 14 minutes; c) filling the region to be filled with the repair product, the rate of increase (V) in the repair product in the region to be filled being, at any time during the filling step, greater than or equal to 3 mm/min.

IPC Classes  ?

• F27D 1/16 - Making or repairing linings
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks

Abstract

A container made of a ceramic matrix composite, wherein the surface of the interior walls of the container are covered at least partially with a coating including at least one layer including a crystalline oxide including at least the elements Li and Al or a precursor of the crystalline oxide.

IPC Classes  ?

• C04B 41/50 - Coating or impregnating with inorganic materials
• B65D 25/14 - Linings or internal coatings
• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• C04B 41/87 - Ceramics

Abstract

A modular lifting assembly (100) configured to lift a refractory brick assembly (10) of a furnace. The modular lifting assembly (100) comprises a frame structure (110) adapted to surround the refractory brick assembly (10). The modular lifting assembly (100) further comprises at least one holding component (140) coupled to the frame structure (110). The at least one holding component (140) is configured to facilitate lifting of the modular lifting assembly (100) by an equipment. The modular lifting assembly (100) furthermore comprises a plurality of prongs (150) detachably coupled with the frame structure (110). Each prong (152) of the plurality of prongs (150) is insertable into a cavity (12) of the refractory brick assembly (10) to provide support along a curved surface (14) of the cavity (12) of the refractory brick assembly (10) during a lifting operation thereof.

IPC Classes  ?

• G27D 1/16 -

Abstract

A container for manufacturing an oxide powder including lithium, the surface of the inner walls of which is at least partially covered with a coating having the following crystalline phases, as a percentage based on the total weight of the crystalline phases: MgAl2O4 spinel: more than 25% and up to 60%, and crystalline phases other than MgAl2O4 spinel and corundum: <10%, and corundum: supplemented to 100%.

IPC Classes  ?

• C04B 41/50 - Coating or impregnating with inorganic materials
• C04B 35/119 - Composites with zirconium oxide
• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C04B 41/45 - Coating or impregnating
• C04B 41/87 - Ceramics

Abstract

23222239010109090 reprsent the particle sizes corresponding to the percentages that are equal to 10% and 90% by volume, respectively, on the particle size distribution curve of the particulate mixture, the particle sizes being classified in ascending order.

IPC Classes  ?

• C04B 35/18 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silicates other than clay rich in aluminium oxide
• B28B 1/54 - Producing shaped articles from the material specially adapted for producing articles from molten material, e.g. slag
• C01B 33/26 - Aluminium-containing silicates
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof

Abstract

The invention relates to a method for reusing a spent refractory product initially arranged, in a service position, within a thermal installation and contaminated with an alkaline cyanide compound, the method comprising the following successive steps: a) - extracting the spent refractory product from the service position, - reducing the particle size of the spent refractory product so as to obtain a particulate mixture; b) before the extraction and/or during the extraction, and/or between the extraction and the particle size reduction and/or during the particle size reduction of step a) and/or after step a), placing the particulate mixture in contact with a solution comprising a thiosulphate compound, or a "thiosulphate solution", so as to obtain a two-phase mixture; and e) separating the liquid phase from the two-phase mixture and using the particulate mixture to produce a new refractory product.

IPC Classes  ?

• C22B 1/14 - AgglomeratingBriquettingBindingGranulating
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 7/04 - Working-up slag
• C01B 17/64 - ThiosulfatesDithionitesPolythionates

Abstract

The invention relates to a metamaterial comprising at least two components, including a first component that comprises, and preferably consists of, a dielectric oxide of at least one of the elements chosen from among Al, Ti, Ca, Mg, Ta, Hf and Zr; and a second component that comprises, and preferably consists of, a transparent electron-conductive oxide, the oxide being an oxide of at least one element chosen from among Zn, Sn, Ni, Ga, In and Cd, the conductive and dielectric oxides being inert with respect to one another at a temperature of 1000°C and at a pressure of 0.1 MPa, the components being present in the metamaterial in the form of a plurality of layers of the two components or of a wall consisting of one of the components on which a layer of the other component is deposited, the thickness of each layer or wall being less than 300 nanometers and the maximum distance between the two closest walls or layers of the same component being less than 300 nanometers.

IPC Classes  ?

• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• B32B 18/00 - Layered products essentially comprising ceramics, e.g. refractory products
• C04B 41/52 - Multiple coating or impregnating
• C04B 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions
• H01L 31/0224 - Electrodes
• H01L 31/0392 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes including thin films deposited on metallic or insulating substrates
• H02S 10/30 - Thermophotovoltaic systems
• C23C 16/40 - Oxides
• C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
• C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
• C04B 111/92 - Electrically insulating materials
• C04B 111/94 - Electrically conducting materials

Abstract

The invention relates to an at least partially ceramic knitted support intended for the manufacture of a CMC, the support comprising a ceramic knit that comprises repeating unit cells, at least one portion of the unit cells being at least partially blocked by at least one blocking yarn, in which more than 40% of the unit cells, by number, are at least partially blocked by a blocking yarn, preferably by a set of blocking yarns, the blocking yarn or all of the blocking yarns together blocking more than 30% of the total surface area of the at least partially blocked unit cells, a unit cell being defined as being the smallest rectangular unit which, by repetition, forms 70% or more of the surface area of the knit; the invention also relates to a method for the manufacture of a CMC from an impregnated preform comprising at least one knitted support and to the CMC obtained thereby.

IPC Classes  ?

• B32B 18/00 - Layered products essentially comprising ceramics, e.g. refractory products
• C04B 35/117 - Composites
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/18 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silicates other than clay rich in aluminium oxide
• C04B 35/185 - Mullite
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• D04B 1/12 - Patterned fabrics or articles characterised by thread material
• B29B 11/00 - Making preforms
• B29C 70/00 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts

Abstract

232323233: the remainder to make up 100%; • - a crystallographic composition characterised by an X-ray diffraction pattern having a "reference peak" in the 2θ angular range of between 18.1° and 20.1°, a first peak in the 2θ angular range of between 12.3° and 13.8° and, optionally, a second peak in the 2θ angular range of between 25.2° and 25.8°, or the "corundum phase peak", each peak having a respective height, in terms of number of counts, the ratio R1 of the height of the first peak to the height of the reference peak being greater than 0.2 and the ratio R2 of the height of the corundum phase peak to the height of the reference peak being less than 1.

IPC Classes  ?

• C04B 35/111 - Fine ceramics
• C04B 35/653 - Processes involving a melting step
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C09K 3/14 - Anti-slip materialsAbrasives

Abstract

A method for synthesizing a TiB2 powder includes the reduction of titanium oxide by carbon in the presence of a source of boron, the method includes heating a mixture of a carbon source, a boron carbide powder whose median particle diameter is between 5 and 100 microns and a powder of titanium oxide whose median particle diameter is between 5 and 80 microns, the mixture being placed in an enclosure under an inert gas sweep flow rate between 0.5 and 10 L/min/m/m3 of enclosure at a temperature of between 1500° C. and 2000° C., as well as the TiB2 powder obtained by such a method.

IPC Classes  ?

• C01B 35/04 - Metal borides
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides

Abstract

A sintered bead has a chemical composition, as mass percentages on the basis of the oxides of ZrO2+HfO2+Y2O3+CeO2: balance to 100%; 0%≤Al2O3≤1.5%; CaO≤2%; and oxides other than ZrO2, HfO2, Y2O3, CeO2, Al2O3 and CaO: ≤5%. The contents of Y2O3 and CeO2, as molar percentages on the basis of the sum of ZrO2, HfO2, Y2O3 and CeO2, are such that 1.3%≤Y2O3≤2.5%, in particular 1.3%≤Y2O3<1.8%, and 0.1%≤CeO2≤1.7%, in particular 0.5%≤CeO2≤1.7%, in particular 0.9%

IPC Classes  ?

• C04B 35/488 - Composites
• C04B 35/626 - Preparing or treating the powders individually or as batches

Abstract

A device for tracking a target component through electrical time-domain or frequency-domain reflectometry has an electromagnetic waveguide and an interrogator electrically connected to the waveguide in order to inject an incident signal therein and receive a reflected signal in response. The reflected signal has a background echo reflected by the exit end of the waveguide. The waveguide has a measuring part with a plurality of base discontinuities, distributed randomly along the measuring part of the waveguide, and that are able to generate echoes having an amplitude greater than 1% and less than 30% of the amplitude of the background echo.

IPC Classes  ?

• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

Abstract

A method for detecting a defect in a region of interest within a part to be tested includes the step of, for a reference part identical to the part to be tested but free from defects, determining a set of resonant modes each defining: a resonant frequency of the reference part, considering that the modulus of elasticity of the reference part is constant, and a field of mechanical stresses on and/or in the reference part that are generated when the reference part resonates at the resonant frequency. The method includes selecting the resonant mode, referred to as “optimum resonant mode”, that generates, in the region of interest, a maximum mechanical stress and determining a loading mode, referred to as “optimum” loading mode, that primarily activates the optimum resonant mode, a loading mode defining at least an excitation wave, an injection zone where the excitation wave is injected into the reference part, and an output zone where an output wave resulting from the excitation wave passing through from the injection zone to the output zone is picked up. The method includes carrying out nonlinear resonant spectrometry analysis based on the optimum loading mode, so as to determine a nonlinearity parameter for each of the part to be tested and reference part and classifying the part to be tested on the basis of the difference between the nonlinearity parameters for the part to be tested and for the reference part.”

IPC Classes  ?

• G01N 29/04 - Analysing solids
• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects
• G01N 29/42 - Detecting the response signal by frequency filtering
• G01N 29/44 - Processing the detected response signal
• G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis

Abstract

A process is provided for a heat-resistant product that has A process is provided for a heat-resistant product that has a support chosen from a glass fiber and an assembly of glass fibers, and A process is provided for a heat-resistant product that has a support chosen from a glass fiber and an assembly of glass fibers, and a coating extending over the outer surface of said support, in a zone called the “protected zone.” The coating has particles having a mean size of less than 100 nm and has more than 95% by mass of Al2O3 and/or ZrO2, referred to as “protective particles.” The protective particles cover more than 50% and less than 90%of the protected zone, as percentage by surface area. The process includes the step of subjecting the heat-resistant product to a temperature of greater than 600° C. for a duration of greater than 0.5 hours.

IPC Classes  ?

• C03C 25/002 - Thermal treatment
• C03C 25/1095 - Coating to obtain coated fabrics
• C03C 25/42 - Coatings containing inorganic materials
• C03C 25/47 - Coatings containing composite materials containing particles, fibres or flakes, e.g. in a continuous phase
• C03C 25/54 - Combinations of one or more coatings containing organic materials only with one or more coatings containing inorganic materials only
• C09D 1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances

Abstract

The invention relates to a metallurgical furnace comprising a time- or frequency-domain electrical reflectometry monitoring device for monitoring the metallurgical furnace using an array of wire electromagnetic waveguides, wherein each waveguide comprises a measurement portion extending in parallel to the hot face and wherein the measurement portion is provided with a plurality of discontinuities, referred to as "base discontinuities", - which are distributed randomly at least along the measurement portion of the waveguide, and - are capable of generating echoes having an amplitude greater than 0.5%, preferably greater than 1% and less than 30%, of the amplitude of the back echo reflected by the output end of the waveguide, referred to as "base secondary echoes", or are formed by raised portions or by raised portions resulting from irregular segmentation of a dielectric material positioned between the first and second electrical conductors, or local variations in the distance between the first and second electrical conductors or in the distance between, on the one hand, the first electrical conductor and/or the second electrical conductor and, on the other hand, a dielectric material of a support, or variations in the structure and/or the composition of the environment surrounding the first and second electrical conductors or between the first and second electrical conductors, the number of base discontinuities, per metre of the measurement portion of the waveguide, being greater than 10.

IPC Classes  ?

• F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices
• G01F 23/284 - Electromagnetic waves
• G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more

Abstract

The invention relates to a glass furnace comprising a device for monitoring, by time-domain or frequency-domain electrical reflectometry, the condition of a part of the furnace (30), comprising an array of wire-like electromagnetic waveguides (12), extending parallel to the hot face (37) and at a suitable distance such that, in use, the waveguide is at a temperature of greater than 500°C and less than 1300°C, and comprising a plurality of discontinuities, referred to as "basic discontinuities" (24), which are: - randomly distributed at least along the measurement part of the waveguide, and - capable of generating echoes having an amplitude of greater than 0.5%, preferably greater than 1% and less than 30%, of the amplitude of the back echo reflected by the output end of the waveguide, referred to as "secondary basic echoes", or consisting of reliefs, or reliefs resulting from uneven segmentation of a dielectric material positioned between the first and second electrical conductors, or from local variations in the distance between the first and second electrical conductors or the distance between the first electrical conductor and/or the second electrical conductor on the one hand and a dielectric material of a support on the other hand, or from variations in the structure and/or the composition of the environment around the first and second electrical conductors or between the first and second electrical conductors, the number of basic discontinuities being greater than 10 per metre of the measurement part of the waveguide. The discontinuities can be beads (23).

IPC Classes  ?

• C03B 5/16 - Special features of the melting processAuxiliary means specially adapted for glass-melting furnaces

Abstract

The invention relates to a method for producing a gadolinium-doped cerium oxide powder comprising a cobalt oxide, the method comprising the following successive steps of: 1) preparing a wet product comprising a mixture of: - particles of gadolinium-doped cerium oxide; - water containing a cobalt complex; d) optionally, removing at least some of the water; e) calcining the product obtained in step d), or, in the absence of step d), the product obtained in step 1), in an oxygenated fluid, so as to obtain the powder.

IPC Classes  ?

• C01F 17/20 - Compounds containing only rare earth metals as the metal element

Abstract

The invention relates to a packaged product comprising: - a sealed package; and - a wet unshaped product arranged in the sealed package and consisting, for more than 95% by weight: - of 4% to 15% water, in percentages by weight based on the weight of the wet unshaped product; - of 0.5% to 3.2% of a binder precursor, in percentages by weight based on the weight of the wet unshaped product; - of a ceramic powder, the binder precursor being chosen from among: - a colloidal silica having a specific surface area of at least 150 m2/g; and a mixture consisting of: - a colloidal silica, in an amount of 0.5% or more by weight based on the weight of the wet unshaped product, having a specific surface area of at least 500 m2/g; and - a hydrolysed silane and/or a siloxane, wherein the ceramic powder is made up of the ceramic particles without taking into account the colloidal silica particles.

IPC Classes  ?

• C04B 35/101 - Refractories from grain sized mixtures
• C04B 35/105 - Refractories from grain sized mixtures containing chromium oxide or chrome ore
• C04B 35/106 - Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
• C04B 35/12 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on chromium oxide
• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/482 - Refractories from grain sized mixtures
• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C04B 28/24 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl ammonium or alkali metal silicatesCompositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing silica sols
• C04B 111/72 - Compositions used for repairing existing buildings or building materials
• F27D 1/16 - Making or repairing linings

Abstract

Use, as a milling agent for milling a suspension, wet dispersing agent or for surface treatment, of a powder comprising more than 90% by mass of sintered balls, each sintered ball having: a chemical composition such that, in percentages by mass based on the mass of the ball: 89%≤W≤97%; 5%≤C≤8%; Co≤0.5%; Ni≤0.5%; Elements other than W, C, Co, and Ni, or “Other elements”: ≤3%; a tungsten carbide(s) content greater than 55% in percentage by mass based on the crystallized phases; a bulk density greater than or equal to 14 g/cm3.

IPC Classes  ?

• C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
• B22F 1/065 - Spherical particles
• C04B 35/64 - Burning or sintering processes
• C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide

Abstract

Anti-ballistic armor element, comprising a ceramic body comprising a sintered material consisting of ceramic grains with a Vickers hardness of more than 5 GPa, the total pore volume of said material being between 0.5 and 10%, said ceramic body being characterized in that the cumulative volume of pores with a diameter of between 30 and 100 micrometers represents between 0.2 and 2.5% of the volume of said material, the cumulative volume of pores with a diameter of more than 100 micrometers is less than 0.2% of the volume of said material , the remainder of said total pore volume consisting of pores whose diameter is less than 30 micrometers.

IPC Classes  ?

• F41H 5/04 - Plate construction composed of more than one layer
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/64 - Burning or sintering processes
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
• C04B 38/06 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by burning-out added substances

Abstract

A polycrystalline silicon carbide sintered material includes silicon carbide grains having a median equivalent diameter of between 1 and 10 microns, the material having a total porosity of less than 2% by volume of the material, and a silicon carbide mass content of at least 99%, except for the free carbon, wherein in the material the mass ratio of the content of SiC having a beta-type crystallographic form to the content of SiC having an alpha-type crystallographic form is less than 2.

IPC Classes  ?

• C04B 35/575 - Fine ceramics obtained by pressure sintering
• C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products

Abstract

A polycrystalline sintered ceramic material of very low electrical resistivity includes by mass more than 95% silicon carbide (SiC), less than 1.5% silicon in another form than SiC, less than 2.5% carbon in another form than SiC, less than 1% oxygen (O), less than 0.5% aluminum (Al), less than 0.5% of the elements Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, less than 0.5% alkali elements, less than 0.5% alkaline earth, between 0.1 and 1.5% nitrogen (N), the other elements forming the complement to 100%, wherein the grains of the above material have a median equivalent diameter of between 0.5 and 5 micrometers, the mass ratio of SiC alpha (α)/SiC beta (β) is less than 0.1, and the total porosity represents less than 15% by volume of the material.

IPC Classes  ?

• C04B 35/575 - Fine ceramics obtained by pressure sintering

Abstract

252222O < 1.0%, as weight percentages based on the weight of said mixture.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/12 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on chromium oxide
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/185 - Mullite
• C04B 35/443 - Magnesium aluminate spinel
• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• F27D 1/16 - Making or repairing linings

Abstract

Cast molten refractory product comprising, in percentages by weight based on the oxides and for a total of 100%: Cast molten refractory product comprising, in percentages by weight based on the oxides and for a total of 100%: ZrO2: complement to 100% HfO2:  <5% SiO2:  8.0% to 11.0% Al2O3: 4.0% to 6.5% Na2O + K2O + B2O3: 0.40% to 1.30% B2O3: <0.60% Y2O3:  <1.0% Fe2O3 + TiO2: <0.60% other species:  <1.0% with a ratio SiO2/(Na2O+K2O+B2O3) less than or equal to 19.0, the SiO2 content being greater than or equal to 8.5% if the Al2O3 content is greater than or equal to 5.1%.

IPC Classes  ?

• C04B 35/484 - Refractories by fusion casting
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C04B 35/657 - Processes involving a melting step for manufacturing refractories

Abstract

A product for the extraction of lithium from a brine, the product including particles bound by a binder, the binder including a gelled polysaccharide including a group establishing an ionic bond with a divalent cation, a trivalent cation and mixtures thereof, the particles being essentially particles of a lithium adsorbent.

IPC Classes  ?

• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
• B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
• B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties

Abstract

The invention relates to a process for producing mayenite, comprising the following sequence of steps: a) making a feedstock suitable for obtaining, at the end of step c), a product comprising more than 90% of a mayenite comprising calcium and/or strontium, aluminium and oxygen, as a percentage by weight based on the weight of the crystallised phases; b) melting said feedstock until a molten material is obtained; c) cooling said molten material so as to solidify it and obtain a fused polycrystalline product; said melting being carried out with an electric arc furnace and in a reducing medium.

IPC Classes  ?

• C04B 35/44 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
• C04B 35/653 - Processes involving a melting step
• C01F 7/164 - Calcium aluminates
• C01F 7/166 - Strontium aluminates
• H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides

Abstract

233233 to form complex calcium aluminates and/or hibonite-type phases during sintering/heat treatment in the presence of MgO. The particle composition is characterised in that the refractory covering after sintering is more resistant to slag penetration and has an increased modulus of rupture.

IPC Classes  ?

• C04B 35/043 - Refractories from grain sized mixtures
• C04B 35/101 - Refractories from grain sized mixtures

Abstract

The present invention relates to a molten cast refractory product comprising, in mass percent on the basis of oxides, and for a total of 100%: ZrO2 + HfO2: 39.0% to 55.0%, SiO2: 10.5% to 14.0%, Al2O3: complement to 100%, Na2O + K2O: 0.80% to 3.00%, Na2O: < 0.60%, B2O3: < 1.0%, Fe2O3 + TiO2: < 0.60%, other types: < 1.0% with HfO2 < 5% and with a ratio (K2O/1.52)/(Na2O + K2O/1.52) of greater than 0.30.

IPC Classes  ?

• C04B 35/109 - Refractories by fusion casting containing zirconium oxide or zircon (ZrSiO4)
• C03B 5/00 - Melting in furnacesFurnaces so far as specially adapted for glass manufacture
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C04B 35/484 - Refractories by fusion casting

Abstract

222223222323222222222O/1.52) being greater than 0.60.

IPC Classes  ?

• C04B 35/109 - Refractories by fusion casting containing zirconium oxide or zircon (ZrSiO4)
• C03B 5/00 - Melting in furnacesFurnaces so far as specially adapted for glass manufacture
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C04B 35/484 - Refractories by fusion casting

Abstract

22 greater than 90%; and - the porosity of the damping material is between 2% and 10% by volume.

IPC Classes  ?

• F41H 5/04 - Plate construction composed of more than one layer

Abstract

Disclosed is a fused grain having the following chemical composition, expressed in percentages by mass on the basis of the oxides: ZrO2+HfO2: 2% to 13%; elements other than ZrO2, HfO2, Y2O; and Al2O3: ≤2%. Y2O3+Al2O3: made up to 100%; with 0.0065≤Y2O;/(ZrO2+HfO2)≤0.1300.

IPC Classes  ?

• C04B 35/109 - Refractories by fusion casting containing zirconium oxide or zircon (ZrSiO4)
• C04B 35/653 - Processes involving a melting step
• B24D 3/14 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings

Abstract

The invention relates to a sintered ball that has the following crystallized phases, in mass percentages based on crystallized phases and for a total of 100%: stabilized zirconia: remainder up to 100%; monoclinic zirconia: ≤20%; 4%≤magnetic component≤22%; crystallized phases other than stabilized zirconia, monoclinic zirconia and magnetic component: <10%; the magnetic component being chosen from among magnetic spinels, magnetic garnets, magnetic hexagonal ferrites and mixtures thereof; the sintered ball comprising, in addition to the magnetic component, CeO2 and optionally Y2O3, in contents that, in molar percentages on the basis of the sum of ZrO2, CeO2 and Y2O3, 3%≤CeO2≤17.5% and 1.5%≤Y2O3+(CeO2)/3.5≤5%.

IPC Classes  ?

• C04B 35/488 - Composites
• B02C 17/20 - Disintegrating members
• B03C 1/30 - Combinations with other devices, not otherwise provided for
• C04B 35/64 - Burning or sintering processes

Abstract

Disclosed is an anti-ballistic protection device comprising - a shield (22) comprising a shielding part (12) capable of protecting a target from a projectile fired by a firearm, and - a sensor (24) comprising two electrical conductors (28e, 28i) and a separator (22) arranged between the conductors, and - an interrogator (26) electrically connected to the conductors and configured to measure an electrical property depending on the layout of the conductors and/or on the shape of the conductors and/or on the structure of the separator and/or on the shape of the separator, or a connector capable of electrically connecting the conductors to a said interrogator, at least one portion of the shield, preferably at least one portion of the shielding part, totally or partially forming the separator.

IPC Classes  ?

• F41H 5/04 - Plate construction composed of more than one layer
• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings

Abstract

A sintered product having: the following chemical analysis, as percentage by mass based on the oxides: Al2O3: remainder to 100%, 0.26%≤Na2O≤4%, 0%≤oxides other than Al2O3 and Na2O≤6%, provided that SiO2≤2%, the following crystalline phases, as percentages by mass based on the total amount of crystalline phases: 5%≤beta-alumina≤37%, less than 6% of crystalline phases other than beta-alumina and alpha-alumina, remainder to 100%: alpha-alumina.

IPC Classes  ?

• C04B 35/111 - Fine ceramics
• C04B 28/06 - Aluminous cements
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/64 - Burning or sintering processes
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C03B 17/04 - Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
• C03B 7/02 - Forehearths, i.e. feeder channels

Abstract

The invention relates to a cord having an equivalent diameter (d) of between 1 mm and 3.5 mm and made of a core (18) in the form of a wire and a sheath (20) covering the core along its entire length, the core being formed of: - an array of inorganic particles (22, the median size (D50) of which is smaller than 10 micrometres, the inorganic particles representing more than 40% and less than 80% of the volume of the core; and - a matrix (24) binding the inorganic particles, the matrix comprising a polymer binder and, optionally, a matrix lubricant, together representing more than 90% of the volume of the matrix; the sheath having a thickness of between 50 micrometres and 500 micrometres and comprising a sheath polymer and, preferably, a sheath lubricant together representing more than 90% of the volume of the sheath, the volume percentages being determined without taking into account the possible presence of a solvent.

IPC Classes  ?

• C23C 4/04 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
• B05B 7/20 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed by flame or combustion
• B23K 35/36 - Selection of non-metallic compositions, e.g. coatings, fluxesSelection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
• B23K 35/40 - Making wire or rods for soldering or welding
• B23K 5/18 - Gas flame welding for purposes other than joining parts, e.g. built-up welding
• B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
• C23C 4/11 - Oxides
• C23C 4/131 - Wire arc spraying
• C23C 4/134 - Plasma spraying

IPC Classes  ?

• B05B 7/20 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed by flame or combustion
• B23K 5/18 - Gas flame welding for purposes other than joining parts, e.g. built-up welding
• B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
• B23K 35/36 - Selection of non-metallic compositions, e.g. coatings, fluxesSelection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
• B23K 35/40 - Making wire or rods for soldering or welding
• C23C 4/04 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
• C23C 4/11 - Oxides
• C23C 4/131 - Wire arc spraying
• C23C 4/134 - Plasma spraying

Abstract

1233) inside a glass melting furnace (10), the region to be repaired being at a temperature higher than 300°C, said method comprising the following steps: • a) installing an inner formwork (32i) in a service position, so as to produce a mold around the region to be repaired; • b) filling the mold with a repair product (41). The inner formwork comprises parts which come into contact with the repair material during the repair, referred to as "formwork elements". All the formwork elements are made of a ceramic. The region to be repaired is located on the side wall of the tank or in the superstructure.

IPC Classes  ?

• C03B 5/42 - Details of construction of furnace walls, e.g. to prevent corrosionUse of materials for furnace walls
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• F27D 1/16 - Making or repairing linings

Abstract

1233) inside a glass melting furnace (10), the region to be repaired being at a temperature higher than 300°C, said method comprising the following steps: • a) installing an inner formwork (32i) in a service position, so as to produce a mold around the region to be repaired; • b) filling the mold with a repair product (41), at least part of the inner formwork being made of a ceramic matrix composite (CMC).

IPC Classes  ?

• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• F27D 1/16 - Making or repairing linings
• C03B 5/42 - Details of construction of furnace walls, e.g. to prevent corrosionUse of materials for furnace walls

Abstract

The present invention relates to a product comprising: - water, and - crystallites, at least some, preferably substantially all of said crystallites consisting of lithiated bayerite, the average size of the lithiated bayerite crystallites being greater than or equal to 10 nm and less than or equal to 25 nm, and said product having a cumulative content of aluminium hydroxide and boehmite of less than or equal to 10%, said product comprising at least the elements Li, Cl, Al, O and H, the elements Li, Cl and Al being present in said dry product in the following contents, determined by inductively coupled plasma mass spectrometry, in percentages by weight: - 2% < Li < 5%, - 10% < Cl < 26%, - 15% < Al < 30%.

IPC Classes  ?

• B01J 41/10 - Inorganic material
• C01D 15/02 - OxidesHydroxides
• C01F 7/02 - Aluminium oxideAluminium hydroxideAluminates
• C01F 7/784 - Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions

Abstract

A product based on a metal-organic framework (MOF) and the method for producing same, the product containing particles bound by a binder, the binder including boehmite, the particles being essentially MOF particles and, optionally, particles of a ceramic material other than boehmite.

IPC Classes  ?

• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating

Abstract

m at plane i.

IPC Classes  ?

• F41H 5/04 - Plate construction composed of more than one layer

Abstract

A fused solid-state electrolyte e membrane having a thickness less than 5 mm and intended for a lithium-ion battery. The membrane includes a polycrystalline product including at least 3.0% amorphous phase and including, for more than 95% of its mass, of the elements Li, La, Zr, M and O, M being a dopant chosen from the group formed by Al, P, Sb, Sc, Ti, V, Y, Nb, Hf, Ta, the lanthanides with the exception of La, Se, W, Bi, Si, Ge, Ga, Sn, Cr, Fe, Zn, Na, K, Rb, Cs, Fr, Mg, Ca, Sr, Ba and the mixtures thereof. The contents of these elements, measured after a decarbonatation operation without loss of lithium, being defined by the formula LiaLabZrcMdO12, wherein the atomic indices are such that: 2.500

IPC Classes  ?

• H01M 50/431 - Inorganic material
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms

Abstract

A binder for an injection moulding composition, the binder includes, in percentage by mass and for a total of 100%: 35% to 60% of a component (a), or polymer base, made of a polymer or a mixture of polymers, each of the polymer being non-amphiphilic and having a mass average molar mass greater than or equal to 5,000 g/mol, 30% to 55% of a component (b), or wax, made of a polymer or a mixture of polymers, each of the polymer being non-amphiphilic and having a mass average molar mass less than 5,000 g/mol, and less than 10% of an amphiphilic component (c), or surfactant, and less than 10% of other components (d). The polymer base comprising 2% to 15% of a styrene-ethylene-butylene-styrene copolymer (SEBS), in percentage by mass based on the mass of the binder.

IPC Classes  ?

• C04B 35/634 - Polymers
• C04B 35/638 - Removal thereof
• C04B 35/64 - Burning or sintering processes

Abstract

The invention relates to a method for dry-method manufacture of a diboride powder MB2, wherein M is a chemical element belonging to group 4 of the periodic table, from the reduction of an oxide MO2 of the element M according to the reaction MO2 + B2O3 + yR + xA2O ? MB2 + A2xRyO5+x, wherein R is a reducing element selected from Al, Si, Ti, Zr, Hf, Y, Sc and the lanthanides and A2O is an oxide of an alkali element A. The invention also relates to a powder obtained by means of said method.

IPC Classes  ?

• C01B 35/04 - Metal borides

Abstract

The present invention relates to a container made of a ceramic matrix composite, the surface of the inner walls of said container being at least partially covered, preferably for more than 80%, of a coating having at least one layer comprising a crystallized oxide containing at least the elements Li and Al or a precursor of said crystallized oxide.

IPC Classes  ?

• C04B 41/87 - Ceramics
• C04B 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions

Abstract

Support for firing a powder comprising an alkali metal, in particular Li, comprising a porous ceramic body forming a cavity or a container for said powder, wherein said ceramic body having an open porosity of between 10% and 40% and an equivalent pore diameter of between 0.5 and 25 micrometers is coated on at least one portion of its internal surface with a ceramic coating, said coating comprising a compound chosen from alumina, a lithium aluminate optionally further comprising silicon, an alumina/magnesia spinel, zirconia, which is preferably stabilized, hafnia, yttria; having an average thickness of between 50 and 500 micrometers; a total porosity of less than 15% by volume and a volume fraction of pores with a diameter greater than or equal to 2 micrometers of less than 2.5%.

IPC Classes  ?

• C04B 35/111 - Fine ceramics
• C04B 35/44 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
• C04B 35/443 - Magnesium aluminate spinel
• C04B 35/486 - Fine ceramics
• C04B 35/505 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare earth compounds based on yttrium oxide
• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C04B 41/45 - Coating or impregnating
• C04B 41/87 - Ceramics
• C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• C23C 4/11 - Oxides
• C23C 4/134 - Plasma spraying
• F27B 14/10 - Crucibles
• F27D 5/00 - Supports, screens or the like for the charge within the furnace
• H01M 4/139 - Processes of manufacture

Abstract

The invention relates to a container for producing an oxide powder comprising lithium, the surface of the inner walls thereof being at least partially covered with a coating having the following crystallized phases in percentage on the basis of the total mass of the crystallized phases: - spinel MgAl2O4: more than 25% and up to 60%, and - crystallized phases other than spinel MgAl2O4 and corundum: < 10% - corundum: remainder to 100%.

IPC Classes  ?

• B01L 3/04 - Crucibles
• C04B 35/117 - Composites
• C04B 35/443 - Magnesium aluminate spinel
• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C04B 41/45 - Coating or impregnating
• C04B 41/87 - Ceramics
• F27B 14/10 - Crucibles
• F27D 5/00 - Supports, screens or the like for the charge within the furnace
• H01M 4/139 - Processes of manufacture

Abstract

A sintered bead and an associated method. The sintered bead has the following chemical composition, as mass percentages on the basis of the oxides: ZrO2+HfO2+Y2O3+CeO2: remainder to 100%; 0%≤Al2O3≤1.5%; CaO≤2%; oxides other than ZrO2, HfO2, Y2O3, CeO2, Al2O3 and CaO: ≤5%. The contents of Y2O3 and CeO2, as molar percentages on the basis of the sum of ZrO2, HfO2, Y2O3 and CeO2, being such that 1.8%≤Y2O3≤2.5% and 0.1%≤CeO2≤0.9%. The sintered bead has following crystalline phases, as mass percentages on the basis of the crystalline phases and for a total of 100%: stabilized zirconia: remainder to 100%; monoclinic zirconia: ≤10%; crystalline phases other than stabilized zirconia and monoclinic zirconia: <7%.

IPC Classes  ?

• C04B 35/486 - Fine ceramics
• C04B 35/64 - Burning or sintering processes

Abstract

232323233: remainder up to 100%.

IPC Classes  ?

• C04B 35/111 - Fine ceramics
• C04B 35/653 - Processes involving a melting step
• C09K 3/14 - Anti-slip materialsAbrasives

Abstract

Disclosed is a ceramic foam that is obtained by a method in accordance with the present invention and has a plurality of interlinked cells which are delimited by ceramic walls and are interconnected by interconnection windows, the walls delimiting the cells being formed by sintering grains, this agglomeration leaving interstices between the grains, the ceramic foam having a total porosity that is higher than 40%, the ratio (d90-d10)/d50 being lower than 0.15, the percentiles d10, d50 and d90 being the cell sizes corresponding, respectively, to the percentages 10%, 50% and 90%, in number, respectively, on the cumulative distribution curve of the cell sizes arranged in ascending order, the size of a cell being the equivalent diameter of its area shown in a digital photo of a cross section of the foam.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/185 - Mullite
• C04B 35/195 - Alkaline earth aluminosilicates, e.g. cordierite
• C04B 35/462 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates
• C04B 35/478 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on aluminium titanates
• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
• C04B 38/10 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by using foaming agents

Abstract

A particle mixture having: ZrO2+HfO2+Y2O3+CeO2; 0%≤Al2O3≤1.5%; other oxides than ZrO2, HfO2, Y2O3, CeO2 and Al2O3: between 0.5% and 12%. The contents of Y2O3 and CeO2, on the basis of the sum of ZrO2, HfO2, Y2O3 and CeO2, being such that 1.8%≤Y2O3≤3% and 0.1%≤CeO2≤0.9%. The mixture includes between 0.5% and 10% of particles of an oxide pigment. The content of other oxides and which are not included in the oxide pigment being less than 2%. The particles of the oxide pigment including, for more than 95%, of a material chosen from: oxide(s) of perovskite structure or equivalent of precursor(s) of these oxides, oxides of spinal structure or an equivalent amount of precursor(s) of these oxides, and oxides of hematite structure E2O3, oxides of rutile structure FO2, with “E” and “F” being chosen.

IPC Classes  ?

• C04B 35/488 - Composites
• C04B 35/64 - Burning or sintering processes

Abstract

The invention relates to a process for synthesising a TiB2 powder, which comprises reducing titanium oxide with carbon in the presence of a boron source, wherein said process consists in heating a mixture of a carbon source, a boron carbide powder which has a median particle diameter of between 5 and 100 micrometres and a titanium oxide powder which has a median particle diameter of between 5 and 80 micrometres, said mixture being placed in a chamber under an inert-gas flush flow rate of between 0.5 and 10 l/min/m3 of chamber at a temperature of between 1500°C and 2000°C, and also to the TiB2 powder obtained using such a process.

IPC Classes  ?

• C01B 35/04 - Metal borides
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
• C04B 35/626 - Preparing or treating the powders individually or as batches

Abstract

A method for thermally protecting a part according to which a protective screen is placed in an in-use position in which the screen physically isolates at least one portion of the part from a heat source. The heat source is configured to bring the temperature of the at least one portion of the part to a temperature between 400° C. and 900° C. in the absence of the protective screen. The protective screen includes a substrate of glass strands at least partially coated with a coating that includes protective particles of a crystalline material that have a melting point above 1000° C. and is composed of one or more oxides in an amount of more than 95 wt. %. The coating covers more than 50% of the outer surfaces of more than 50% of the number of strands of the substrate.

IPC Classes  ?

• C03C 25/1095 - Coating to obtain coated fabrics
• C03C 25/42 - Coatings containing inorganic materials
• F16L 59/04 - Arrangements using dry fillers, e.g. using slag wool
• F16L 59/14 - Arrangements for the insulation of pipes or pipe systems

Abstract

2223e223 a222322323222232232322223222 ≤ 1.7%, and/or - 10% < monoclinic zirconia ≤ 15%.

IPC Classes  ?

• C04B 35/486 - Fine ceramics
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/64 - Burning or sintering processes
• B02C 17/20 - Disintegrating members
• C04B 35/488 - Composites

Abstract

Method for detecting a defect in a region of interest within a part to be tested, comprising the following steps: a) for a reference part that is identical to the part to be tested but is free of defects, a1) determining a set of resonant modes each defining: - a resonant frequency of the reference part taking the elastic modulus of the reference part to be constant, and - a field of mechanical stresses on and/or in the reference part that are generated when the reference part is resonating at said resonant frequency; a2) selecting the resonant mode, called the "optimal resonant mode", that generates the maximum mechanical stress in the region of interest; b) determining a loading mode, called the "optimal loading mode", that mainly activates said optimal resonant mode, a loading mode defining at least one excitation wave, a feed zone where the excitation wave is fed into the reference part, and an output zone where an output wave resulting from the excitation wave traveling from the feed zone to the output zone is detected; c) analysis using nonlinear resonance spectroscopy based on the optimal loading mode so as to determine a nonlinearity parameter for each one of said parts to be tested and said reference part; d) classifying the part to be tested according to the difference between the nonlinearity parameters for the part to be tested and for the reference part.

IPC Classes  ?

• G01N 29/04 - Analysing solids
• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects
• G01N 29/42 - Detecting the response signal by frequency filtering
• G01N 29/44 - Processing the detected response signal
• G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis

Abstract

A device for tracking a target component through electrical time-domain or frequency-domain reflectometry, said device comprising: - an electromagnetic waveguide (12); - an interrogator (18) electrically connected to the waveguide in order to inject an incident signal therein and receive a reflected signal in response, the reflected signal comprising a background echo (30) reflected by the exit end of the waveguide; the waveguide comprising a measuring part (14) comprising a plurality of base discontinuities (24), - distributed randomly along the measuring part of the waveguide, and - able to generate echoes having an amplitude greater than 1% and less than 30% of the amplitude of the background echo.

IPC Classes  ?

• G01N 27/02 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
• G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more

Abstract

A prepreg including a support with, for more than 90% of the weight thereof, of ceramic fibers, and a thermoreversible liquefiable gel covering, at least in part, at least one portion of the ceramic fibers. The liquefiable gel including: 20% to 60% of ceramic particles and 0% to 10% of metal particles, both as percentage by volume based on the volume of the liquefiable gel; 0.2% to 10% of a thermoreversible hydrocolloid and 0% to 7% of one or more other constituents, both as a percentage by weight on the basis of the total weight of the ceramic particles and metal particles; the balance to 100% being water. It being possible for the ceramic particles and the metal particles to be replaced, partially or completely, by precursors of ceramic particles and of metal particles, respectively, capable of forming, by heat treatment above 200° C., ceramic particles and metal particles, respectively.

IPC Classes  ?

• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• C04B 35/117 - Composites
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
• C04B 35/624 - Sol-gel processing

Abstract

An antiballistic armor-plating component, includes a ceramic body made of a material comprising, as percentages by volume, between 35% and 55% of silicon carbide, between 20% and 50% of boron carbide, between 15% and 35% of a metallic silicon phase or of a metallic phase including silicon.

IPC Classes  ?

• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/563 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on boron carbide
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/653 - Processes involving a melting step
• C04B 35/64 - Burning or sintering processes
• C04B 41/48 - Macromolecular compounds
• C04B 41/45 - Coating or impregnating
• C04B 41/51 - Metallising
• C04B 41/88 - Metals
• C04B 41/83 - Macromolecular compounds
• F41H 5/04 - Plate construction composed of more than one layer
• B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
• B32B 3/04 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by a layer folded at the edge, e.g. over another layer
• B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
• B32B 18/00 - Layered products essentially comprising ceramics, e.g. refractory products
• B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
• B32B 27/34 - Layered products essentially comprising synthetic resin comprising polyamides
• B32B 1/08 - Tubular products

Abstract

2322, referred to as "protective particles", the protective particles covering more than 50% and less than 90% of the surface of the protected area, is exposed to a temperature higher than 600°C for a period of more than 0.5 hours.

IPC Classes  ?

• C03C 25/1065 - Multiple coatings
• C03C 25/1095 - Coating to obtain coated fabrics
• C03C 25/42 - Coatings containing inorganic materials
• C03C 25/47 - Coatings containing composite materials containing particles, fibres or flakes, e.g. in a continuous phase
• C03C 25/54 - Combinations of one or more coatings containing organic materials only with one or more coatings containing inorganic materials only

Abstract

A device that includes a piece of armor made from a material that has a domain of plastic deformation under bad before breaking and an elastic deformation domain. The plastic deformation domain represents less than 1% of the elastic deformation domain. The device includes a deformation sensor fixed to the piece of armor and configured to deform plastically under the effect of at least a stress applied to the piece of armor and leading to damage of the piece of armor.

IPC Classes  ?

• G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
• F41H 1/02 - Armoured or projectile- or missile-resistant garmentsComposite protection fabrics
• F41H 5/04 - Plate construction composed of more than one layer
• G01L 1/06 - Measuring force or stress, in general by measuring the permanent deformation of gauges, e.g. of compressed bodies
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• F41J 5/04 - Electric hit-indicating systemsDetecting hits by actuation of electric contacts or switches

Abstract

The invention relates to a method for producing a sintered ceramic foam according to the following successive steps: a) preparing a mixture M containing at least one ceramic powder suspended in water, at least one gelling agent and at least one foaming agent, at a mixing temperature above the gelling temperature of said gelling agent, b) shearing said mixture M at a foaming temperature above said gelling temperature, until an intermediate foam is obtained, c) gelling said intermediate foam by cooling said intermediate foam to a temperature at least half that of the gelling temperature of the gelling agent, in °C, d) drying said gelled foam in a climatic oven, preferably under forced ventilation and/or by supercritical autoclaving, e) firing said preform at a temperature above 1300°C and below 2300°C.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/185 - Mullite
• C04B 35/195 - Alkaline earth aluminosilicates, e.g. cordierite
• C04B 35/462 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates
• C04B 35/478 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on aluminium titanates
• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
• C04B 38/10 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by using foaming agents

Abstract

The invention relates to an instrumented plate (300) intended for the control of a refractory part of an oven, the instrumented plate comprising: - a support plate (310) though which a plurality of openings (304) pass and which is at least partially made of a material consisting of fibres which are bonded together by a ceramic matrix, referred to as a "ceramic matrix composite", or consisting of a precursor of said ceramic matrix composite; - a sensor (312) supported by said support plate, a precursor of ceramic matrix composite being a material which is able to transform into said ceramic matrix composite under the effect of heating.

IPC Classes  ?

• F27D 19/00 - Arrangement of controlling devices
• F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices
• F27D 21/02 - Observation or illuminating devices

Abstract

A powder intended for the manufacture of a sintered dental article, The powder has a chemical analysis such that, as weight percentages based on the oxides: Al2O3: 0.2%, oxides other than ZrO2, HfO2, Yb2O3, Y2O3 and Al2O3: <0.5%, and ZrO2+HfO2+Yb2O3+Y2O3: balance to 100%, with HfO2<2%. The contents of Yb2O3 and Y2O3, as molar percentages based on the sum of ZrO2, HfO2, Yb2O3 and Y2O3, being such that Yb2O3≥1%, 0.5%≤Y2O3<2%, and Yb2O3+Y2O3≤5.5%. The powder has a specific surface area of greater than or equal to 5 m2/g and less than or equal to 16 m2/g. The powder has a median size of greater than or equal to 0.1 μm and less than or equal to 0.7 μm.

IPC Classes  ?

• A61K 6/824 - Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising transition metal oxides
• A61C 13/083 - Porcelain or ceramic teeth
• A61K 6/818 - Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
• A61K 6/822 - Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising rare earth metal oxides
• A61K 9/14 - Particulate form, e.g. powders
• A61K 6/878 - Zirconium oxide

Abstract

Refractory tile for protecting a wall of energy recovery tubes. A hot face of the tile is to be exposed to the interior of the furnace. A cold face, opposite the hot face, defines: a groove extending over the entire length of the tile and to receive one the tubes, and a fastening receptacle configured to receive a retaining member to immobilize the tile with respect to the tube. The tile has, in a transverse section plane, at least at each position between the position of the groove and the position of the fastening receptacle, a non-zero material thickness. The thickness is measured between the transverse profile of the hot face and a straight segment, which is referred to as the base and links the ends of the transverse profile of the hot face. The positions are determined along the base.

IPC Classes  ?

• F23G 5/44 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels DetailsAccessories
• F23M 5/08 - Cooling thereofTube walls
• F23M 5/02 - CasingsLiningsWalls characterised by the shape of the bricks or blocks used

Abstract

Disclosed is a polycrystalline sintered ceramic material of very low electrical resistivity comprising by mass: - more than 95% silicon carbide (SiC), - less than 1.5% silicon in another form than SiC, - less than 2.5% carbon in another form than SiC, - less than 1% oxygen (O), - less than 0.5% aluminium (Al), - less than 0.5% of the elements Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, - less than 0.5% alkali elements, - less than 0.5% alkaline earths, - between 0.1 and 1.5% nitrogen (N), - the other elements forming the complement to 100%, wherein the grains of the above material have a median equivalent diameter of between 0.5 and 5 micrometres, the mass ratio of SiC alpha (α))/SiC Beta (β) is less than 0.1, and the total porosity represents less than 15% by volume of said material.

IPC Classes  ?

• C04B 35/575 - Fine ceramics obtained by pressure sintering

Abstract

The invention relates to a polycrystalline silicon carbide sintered material consisting of silicon carbide grains having a median equivalent diameter of between 1 and 10 micrometers, said material having a total porosity of less than 2% by volume of said material, and a silicon carbide mass content of at least 99%, except for the free carbon, wherein in said material the mass ratio of the content of SiC having a beta-type crystallographic form to the content of SiC having an alpha-type crystallographic form is less than 2. Also disclosed is a method for producing a material of this kind.

IPC Classes  ?

• C04B 35/575 - Fine ceramics obtained by pressure sintering

Abstract

The invention relates to a method for repairing, in a hot state, a region of a tank in a glass furnace, referred to as the "region to be repaired", by means of a repair product (P), the method involving the following steps, at a temperature greater than 300°C: a) defining a receiving space in the region to be repaired, referred to as the "region to be filled", the region to be filled (10) having a bottom (12; 12'); b) coating the bottom, the coating time, from the start of the introduction of the repair product into the region to be filled to the time at which the bottom is completely covered with the repair product, lasting less than 14 minutes; c) filling the region to be filled with the repair product, the rate of increase (V) in the repair product in the region to be filled being, at any time during the filling step, greater than or equal to 3 mm/min.

IPC Classes  ?

• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• F27D 1/16 - Making or repairing linings

Abstract

An armor component and manufacturing thereof which includes a ceramic hard material, where the hard material has a bulk density that is lower than 3.5 g/cm3 and includes grains of ceramic material having a Vickers hardness that is higher than 15 GPa, bonded by an bonding matrix, the bonding matrix representing between 20 and 80% by weight of the constituent hard material of the ceramic body, and including alumina, silicon nitride and TiCxN1-x crystalline phases, wherein x is included between 0 and 1.

IPC Classes  ?

• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/597 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon oxynitrides

Abstract

2222322232323232222232233 content is greater than or equal to 5.1%.

IPC Classes  ?

• C04B 35/484 - Refractories by fusion casting
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks

Abstract

The present invention relates to a product for the extraction of lithium from a brine, said product comprising particles bound by a binder, said binder comprising a gelled polysaccharide comprising a group establishing an ionic bond with a divalent cation, a trivalent cation and mixtures thereof, and preferably consisting of said gelled polysaccharide, said particles being essentially particles of a lithium adsorbent.

IPC Classes  ?

• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• C01F 7/14 - Aluminium oxide or hydroxide from alkali metal aluminates

Abstract

The present invention relates to a product for the extraction of lithium from a brine, said product comprising particles bound by a binder, said binder comprising a gelled polysaccharide comprising a group establishing an ionic bond with a divalent cation, a trivalent cation and mixtures thereof, and preferably consisting of said gelled polysaccharide, said particles being essentially particles of a lithium adsorbent.

IPC Classes  ?

• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
• B01J 20/06 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group
• B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• C01F 7/14 - Aluminium oxide or hydroxide from alkali metal aluminates

Abstract

An antiballistic armor-plating component, includes a ceramic body made of a material including, as percentages by volume, between 20% and 75% of boron carbide, between 5% an d 30% of a metallic silicon phase or of a metallic phase including silicon and between 20% and 70% of silicon carbide and wherein, as percentages by volume: more than 60% of the grains with an equivalent diameter greater than 60 micrometers are boron carbide grains, the boron carbide grains with an equivalent diameter greater than 30 micrometers represent more than 20%, the silicon carbide grains with an equivalent diameter greater than or equal to 10 micrometers represent more than 10%, the silicon carbide grains with an equivalent diameter less than 10 micrometers represent more than 10%.

IPC Classes  ?

• C04B 35/563 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on boron carbide
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/64 - Burning or sintering processes
• C04B 35/657 - Processes involving a melting step for manufacturing refractories
• F41H 5/04 - Plate construction composed of more than one layer

Abstract

A filter for the filtration of a fluid, such as a liquid, includes or is constituted by a support element made from a porous ceramic material, at least a portion of the surface of the support element being covered with a porous membrane separating layer, the membrane separating layer being constituted essentially of silicon carbide (SiC), its porosity being between 10% and 70% by volume, the median diameter of its pores being between 50 nanometers and 500 nanometers, its mean thickness being between 1 micrometer and 30 micrometers, and its tortuosity being less than 1.7.

IPC Classes  ?

• B01D 71/02 - Inorganic material
• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 69/10 - Supported membranesMembrane supports
• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof

Abstract

Elément de blindage antibalistique, comprenant un corps céramique comprenant un materiau fritte constitue de grains céramiques de dureté Vickers superieure à 5 GPa, le volume total des pores dudit materiau étant compris entre 0,5 et 10%, ledit corps céramique étant caractérise en ce que le volume cumule des pores de diamètre compris entre 30 et 100 micromètres représente entre 0,2 et 2,5% du volume dudit materiau, le volume cumule des pores de diametre supérieur à 100 micromètres est inférieur a 0,2% du volume dudit materiau, le reste dudit volume total de pores etant constitue par des pores dont le diamètre est inferieur à 30 micromètres.

IPC Classes  ?

• C04B 35/111 - Fine ceramics
• C04B 35/563 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on boron carbide
• C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
• C04B 38/06 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by burning-out added substances
• F41H 5/04 - Plate construction composed of more than one layer
• F41H 7/00 - Armoured or armed vehicles

Abstract

223222322322)/3.5 ≤ 5%.

IPC Classes  ?

• C04B 35/486 - Fine ceramics
• B02C 17/20 - Disintegrating members
• C04B 35/488 - Composites
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C04B 35/636 - Polysaccharides or derivatives thereof
• C04B 35/64 - Burning or sintering processes
• B02C 23/08 - Separating or sorting of material, associated with crushing or disintegrating
• B24C 1/00 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods

Abstract

Cartridge housing a filtering pellet which is encapsulated in a sealing ring, which cartridge is intended to be removably attached to a filtering facepiece respirator. The invention relates to a filtration cartridge (5, 5', 5'') which is intended to be removably attached to a health protection mask (1), comprising: - a member which extends along a longitudinal axis (X), the member being in two pieces (51, 52) which are joined together, defining a recess, each of the two pieces being passed through by at least one through-hole which opens into the recess; - at least one component in the form of a pellet (6) having a total porosity greater than 40%; - a sealing ring (53) made from elastomer material with a substantially U-shaped cross-section inside which the pellet is retained, the ring being housed in the recess of the member by being retained with a close fit against an internal portion of either portion or both portions of the member.

IPC Classes  ?

• A41D 13/11 - Protective face masks, e.g. for surgical use, or for use in foul atmospheres
• A62B 18/02 - Masks
• B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
• C04B 35/111 - Fine ceramics
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/185 - Mullite
• C04B 35/195 - Alkaline earth aluminosilicates, e.g. cordierite
• C04B 35/478 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on aluminium titanates
• C04B 35/486 - Fine ceramics
• C04B 35/573 - Fine ceramics obtained by reaction sintering
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof

Abstract

22222323232323222) ≤ 0.1300.

IPC Classes  ?

• C04B 35/109 - Refractories by fusion casting containing zirconium oxide or zircon (ZrSiO4)
• B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
• C04B 35/111 - Fine ceramics
• C04B 35/119 - Composites with zirconium oxide
• C04B 35/653 - Processes involving a melting step
• C09K 3/14 - Anti-slip materialsAbrasives

Abstract

Sintered bead that has a crystalline composition, as percentages by weight based on the total weight of the crystalline phases: zircon<25%; 50%≤cubic zirconia+tetragonal zirconia≤95%, the cubic zirconia content being greater than 50%, the cubic zirconia content being the (cubic zirconia/(cubic zirconia+tetragonal zirconia) ratio by weight); 0≤monoclinic zirconia≤(10−0.2*tetragonal zirconia) %; 5%≤corundum≤50%; crystalline phases other than zircon, cubic zirconia, tetragonal zirconia, monoclinic zirconia and corundum<10%; and the following chemical composition, as percentages by weight based on the oxides: 34%≤ZrO2+HfO2, ZrO2+HfO2 being the remainder to 100%; HfO2≤4.0%; 0.5%≤SiO2≤14.1%; 4.5%≤Al2O3≤49.6%; 2.75%≤Y2O3≤22.8%; MgO≤5%; CaO≤2%; oxides other than ZrO2, HfO2, SiO2, Al2O3, MgO, CaO and Y2O3<5.0%.

IPC Classes  ?

• C04B 35/488 - Composites

Abstract

Device (50) for filtering air intended to supply an air system of an air-transport vehicle, rail vehicle or motor vehicle, characterized in that it comprises a porous three-dimensional structure (52) comprising at least one portion intended to be in contact with said air to be filtered, termed exchange portion (53), said exchange portion (53) comprising at least one adsorbent material in the form of particles chosen from carbon, a zeolite, a metal organic framework and mixtures thereof, said adsorbent particles being connected by a binder, said binder comprising at least one material chosen from the group consisting of boehmite, hydrated aluminas, transition aluminas and mixtures thereof.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01J 20/18 - Synthetic zeolitic molecular sieves
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• F02C 7/04 - Air intakes for gas-turbine plants or jet-propulsion plants
• B64D 13/06 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• B01J 20/34 - Regenerating or reactivating

Abstract

23232i22 ≤ 2%, - the following crystallised phases, as percentages by weight, based on the total amount of crystallised phases: 5% ≤ beta alumina ≤ 37%, less than 6% of crystallised phases other than beta alumina and alpha alumina, the remainder to 100%: alpha alumina.

IPC Classes  ?

• C04B 35/101 - Refractories from grain sized mixtures
• C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
• C04B 28/06 - Aluminous cements
• C03B 5/08 - Glass-melting pots
• C03B 5/00 - Melting in furnacesFurnaces so far as specially adapted for glass manufacture
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C03B 17/04 - Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles

Abstract

Fused cast refractory product including, as weight percentages on the basis of the oxides and for a total of 100%: ZrO2: balance to 100%, Hf2O: <5%, SiO2: 8.1% to 12.0%, B2O3: 0.20% to 0.90%, Na2O+K2O: 0.40% to 0.80%, Al2O3: 0.3% to 2.0%, Y2O3: <2.0%, Fe2O3+TiO2: <0.6%, and other species: <1.5%.

IPC Classes  ?

• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/484 - Refractories by fusion casting
• C04B 35/657 - Processes involving a melting step for manufacturing refractories

Abstract

2.5, wherein the atomic indices are such that 0.76≤y≤1.10, z≤0.21, 0.48≤t≤1.15 and u≤0.52, 0.95≤y+z≤1.10, and 0.95≤t+u≤1.10, X being Ca or Sr or a mixture of Ca and Sr, M being an element chosen from the group formed by La, Ba and mixtures thereof, M′ being an element chosen from the group formed by Ti, Cu, Gd, Mn, Al, Sc, Ga, Mg, Ni, Zn, Pr, In, Co, and mixtures thereof, the sum of the atomic indices of Ti and Cu being less than or equal to 0.1.

IPC Classes  ?

• C04B 35/26 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on ferrites
• B01J 23/78 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with alkali- or alkaline earth metals or beryllium
• B01J 35/02 - Solids
• C04B 35/653 - Processes involving a melting step
• H01M 4/90 - Selection of catalytic material
• H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte

Abstract

An electrochemical device for purifying a fluid, for example wastewater or sludge, includes an electrochemical filtering membrane, including a metallic support, for example chosen from a screen, a fabric or an open-pore foam, the support being permeable to the fluid, a coating layer of the support including a titanium oxide of general formula TiOx, with x between 1.5 and 1.9.

IPC Classes  ?

• C02F 1/461 - Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
• C02F 1/467 - Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection
• C23C 18/12 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material

Abstract

The invention relates to a product based on a metal-organic framework (MOF) and the method for producing same, said product containing particles bound by a binder, said binder including boehmite, said particles being essentially MOF particles and, optionally, particles of a ceramic material other than boehmite.

IPC Classes  ?

• B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating

Abstract

The invention relates to a molten solid electrolyte membrane having a thickness less than 5 mm and intended for a lithium-ion battery, the membrane consisting of a polycrystalline product comprising at least 3.0% amorphous phase and consisting, for more than 95% of its mass, of the elements Li, La, Zr, M and O, M being a dopant chosen from the group formed by Al, P, Sb, Sc, Ti, V, Y, Nb, Hf, Ta, the lanthanides with the exception of La, Se, W, Bi, Si, Ge, Ga, Sn, Cr, Fe, Zn, Na, K, Rb, Cs, Fr, Mg, Ca, Sr, Ba and the mixtures thereof, the contents of these elements, measured after a decarbonatation operation without loss of lithium, being defined by the formula LiaLabZrcMdOi2, wherein the atomic indices are such that: 2.500 < a < 8.500, and 1.000 < b < 3.500, and 0.600 < c < 2.000, and 0 < d < 2.000.

IPC Classes  ?

• H01M 10/0562 - Solid materials
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• C01G 25/02 - Oxides

Abstract

Screening element in the form of a monolithic sintered member which has an external face and an opposite internal face, the surface of the faces being greater than 100 cm2m750 95009501000imm in the plane i.

IPC Classes  ?

• F41H 5/04 - Plate construction composed of more than one layer

Abstract

The invention relates to a sintered ceramic part in the form of a pellet (6; 6.1, 6.2) intended to be implanted in a filtering facepiece respirator (1), the part having a total porosity of more than 40%. The invention also relates to a filtration cartridge integrating such a pellet and a corresponding filtering facepiece respirator.

IPC Classes  ?

• C04B 35/573 - Fine ceramics obtained by reaction sintering
• A41D 13/11 - Protective face masks, e.g. for surgical use, or for use in foul atmospheres
• A62B 18/02 - Masks
• A62B 23/02 - Filters for breathing-protection purposes for respirators
• B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
• C04B 35/111 - Fine ceramics
• C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
• C04B 35/185 - Mullite
• C04B 35/195 - Alkaline earth aluminosilicates, e.g. cordierite
• C04B 35/478 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on aluminium titanates
• C04B 35/486 - Fine ceramics
• C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof

Abstract

Disclosed is an apparatus for treating air, at room temperature, of an enclosed inhabitable space, the apparatus comprising: - a sintered ceramic part (2) having a total porosity higher than 40%, the pores of a size larger than 300 µm representing less than 10% by volume of the porosity, - an air circulator (3) configured to generate a flow of air to be treated through the ceramic part, the ceramic part being a ceramic foam having a plurality of interlocking cells, delimited by ceramic walls and connected to each other by interconnection windows, the walls defining the cells being formed by agglomeration of grains, this agglomeration leaving gaps between the grains.

IPC Classes  ?

• B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
• B01D 53/38 - Removing components of undefined structure
• A62B 23/02 - Filters for breathing-protection purposes for respirators
• B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Abstract

Disclosed is a binder for an injection moulding composition, the binder consisting of, in percentage by mass and for a total of 100%: 35% to 60% of a component (a), or "polymer base", consisting of a polymer or a mixture of polymers, each of said polymer being"non-amphiphilic" and having a mass average molar mass greater than or equal to 5000 g/mol, 30% to 55% of a component (b), or "wax", consisting of a polymer or a mixture of polymers, each of said polymers being non-amphiphilic and having a mass average molar mass less than 5000 g/mol, and less than 10% of an amphiphilic component (c), or "surfactant", and less than 10% of other components (d), the polymer base comprising 2% to 15% of a styrene-ethylene-butylene-styrene copolymer, or "SEBS", in percentage by mass based on the mass of the binder, the content by mass of styrene in the SEBS being greater than 15%, in percentage by mass based on the mass of the SEBS, the mass average molar mass of the SEBS being greater than 100,000 g/mol.

IPC Classes  ?

• B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
• B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
• B29C 67/04 - Sintering
• C04B 35/634 - Polymers
• C08L 91/06 - Waxes

Abstract

A process for the manufacture of a refractory block including more than 80% zirconia, in percentage by weight based on the oxides. The process includes the following successive stages: melting, under reducing conditions, of a charge including more than 50% zircon, in percentage by weight, such as to reduce the zircon and obtain a molten material, application of oxidizing conditions to the molten material, casting of the molten material, and cooling until at least partial solidification of the molten material in the form of a block. Also, the process can include heat treatment of the block.

IPC Classes  ?

• C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/657 - Processes involving a melting step for manufacturing refractories
• C04B 35/626 - Preparing or treating the powders individually or as batches

Abstract

A glass furnace including a refractory portion defining a hot face in contact or intended to be in contact with molten glass or with a gaseous environment in contact with molten glass, and a cold face at a distance from the hot face, and a temperature measurement device. The temperature measurement device including a waveguide that includes a measurement portion including at least one temperature measurement sensor configured to send a response signal in response to the injection of an interrogation signal into the waveguide. The temperature measurement device including an interrogator connected to an input of the waveguide and configured to inject the interrogation signal into the input, to receive the response signal returned by the sensor in response to the injection of the interrogation signal, to analyze the response signal received and to transmit a message according to the analysis.

IPC Classes  ?

• F27D 19/00 - Arrangement of controlling devices
• C03B 5/16 - Special features of the melting processAuxiliary means specially adapted for glass-melting furnaces
• F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices

Abstract

2 2232232223223223 223 223E2FF(1) formed by mixtures of tin and vanadium, mixtures of titanium and chromium and niobium, mixtures of titanium and chromium and tungsten, mixtures of titanium and niobium and manganese, mixtures of tin and chromium, mixtures of chromium and titanium and antimony, mixtures of nickel and antimony and titanium, and mixtures thereof, - and mixtures thereof.

IPC Classes  ?

• C04B 35/486 - Fine ceramics
• C04B 35/488 - Composites
• G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases

Abstract

A method for producing a glass furnace, including a refractory portion, a waveguide with a measurement portion extending into the refractory portion and an interrogator connected to an input of the waveguide to inject an interrogation signal. The measurement portion incorporating a sensor to send a response signal to the interrogator in response to the injection. The interrogator analyzing the response signal and sending a message. Arranging, inside a mold, a temporary part configured to leave space for a compartment for the measurement portion. Preparing a starting feedstock and introducing the starting feedstock into the mold such that the part is embedded therein to obtain a preform. Hardening the preform to form the refractory portion. Removing the temporary part to make the compartment. Assembling the refractory portion with other constituent elements and introducing the measurement portion into the compartment and connecting the interrogator to the input of the waveguide.

IPC Classes  ?

• C03B 5/42 - Details of construction of furnace walls, e.g. to prevent corrosionUse of materials for furnace walls
• F27D 21/00 - Arrangement of monitoring devicesArrangement of safety devices
• B28B 7/16 - Moulds for making shaped articles with cavities or holes open to the surface
• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

2223223 2223223232222322322 ≤ 0,9%, and - the following crystallised phases, in percentages by mass on the basis of the crystallised phases and for a total of 100%: - stabilised zirconia: complement to 100%; - monoclinic zirconia: ≤ 10%; - crystallised phases other than stabilised zirconia and monoclinic zirconia: < 7%. (No abstract drawing)

IPC Classes  ?

• C04B 35/486 - Fine ceramics
• C04B 35/488 - Composites
• B02C 17/20 - Disintegrating members

Abstract

12. V is expressed in mm/second, D is expressed in mm and F is expressed in kHz.

IPC Classes  ?

• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C04B 41/80 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only ceramics

Abstract

2 crystals in a superficial region extending to a depth of less than 2000 μm. The process includes cooling the molten superficial region obtained in the preceding step so as to obtain a protective layer.

IPC Classes  ?

• B23K 26/354 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
• C03B 5/43 - Use of materials for furnace walls, e.g. fire-bricks
• B23K 10/00 - Welding or cutting by means of a plasma
• C03B 5/23 - Cooling the molten glass
• C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
• C03C 3/062 - Glass compositions containing silica with less than 40% silica by weight
• B23K 101/34 - Coated articles
• B23K 103/00 - Materials to be soldered, welded or cut
• F27D 1/00 - CasingsLiningsWallsRoofs

Abstract

2323222: less than 18%, and - fluorine (F): less than 1.8%, and - MgO: less than 4%, and - BaO: less than 1%, and - other constituents < 2.0%. - loss on ignition: balance to 100%.

IPC Classes  ?

• C04B 33/04 - ClayKaolin
• C04B 33/138 - Waste materialsRefuse from metallurgical processes, e.g. slag, furnace dust, galvanic waste
• C04B 35/057 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on calcium oxide
• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
• C21C 7/064 - DephosphorisingDesulfurising
• F27B 14/00 - Crucible or pot furnacesTank furnaces
• C21C 1/02 - Dephosphorising or desulfurising
• C21C 5/52 - Manufacture of steel in electric furnaces
• C21C 5/54 - Processes yielding slags of special composition