The invention relates to a regenerative parallel-flow vertical shaft furnace comprising at least two shafts (1, 2) interconnected by a gas transfer channel (3), each of the shafts comprising, in the active or inactive position, a charging inlet (5) for charging a carbonate mineral rock at the top of the shaft, means for firing the rock, an outlet (8) for discharging the decarbonated produced calcined material at the bottom of the shaft, a cooling air inlet (7) at the bottom of the shaft for countercurrent cooling of the produced calcined material, and a central collecting element (21) that has, at its upper end, a collection opening (24) for collecting the cooling air heated by the calcined material and, at its lower end, an extraction outlet (22), each shaft further comprising a hat-shaped protective element (25) that is fixed in the shaft in a position independent of the central collecting element (21), which element covers and surrounds the upper end thereof to a level lower than the collection opening (24) so as to leave, between this upper end and the hat-shaped element (25), a free passage for collecting the heated cooling air through the collection opening (24).
22 and 1-20 wt% of bound water. The invention also relates to the use of said composition in a glass batch, to a process of preparing a glass batch and to the use of said glass batch in glass manufacturing.
C03C 3/087 - Compositions pour la fabrication du verre contenant de la silice avec 40 à 90% en poids de silice contenant de l'oxyde d'aluminium ou un composé du fer contenant un oxyde d'un métal divalent contenant de l'oxyde de calcium, p. ex. verre à vitre ordinaire ou verre pour récipients creux
3.
PROCESS FOR MANUFACTURING A SLAG CONDITIONING AGENT FOR STEEL DESULFURIZATION
A slag conditioning agent for steel desulfurization is shown which is made by a process in which a dried slag material obtained from a secondary steelmaking process is mixed with quicklime particles. The quicklime particles react with moisture in the slag material to dry the slag material and produce a blend of slag material, hydrated lime and any unreacted quicklime. The blend is then sieved to separate out the hydrated lime. The retained dried fraction after sieving is then mixed with an Al2O3 mass fraction from which the slag conditioning agent can be collected. The slag conditioning agent has an equivalent mass ratio which is between 0.55 and 1.5.
A method for producing lime or dolime, which includes a calcination step for the calcination of calcareous or dolomitic material which is brought into contact with the first fumes which are obtained by combustion of fuel with an oxidizing gas, a cooling of calcined lime or dolime with discharge and collection thereof and a release of a gaseous effluent containing CO2. Subsequent processing steps result in the formation of a CaO-based sorbent material with separation between the CaO-based sorbent material and a CO2-concentrated gas stream which is collected. The recycling of said separated CaO-based sorbent material is recycled into a CO2 depletion step resulting in the extraction of a valorizable fraction of the CaCO3—CaO based charge with a compensatory introduction of fresh CaCO3 in the calcination step.
B01D 53/83 - Procédés en phase solide avec des réactifs en mouvement
B01D 53/96 - Régénération, réactivation ou recyclage des réactifs
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
Annular shaft kiln for calcining carbonated mineral stones, comprising an outer cylinder (1), and an inner cylinder (2), forming an annular space (3) with the outer cylinder (1), said kiln further comprising an external recirculation circuit which is arranged outside of the kiln between a removal duct (9) and lower gas injection means (7), and which comprises a separation body (28) for taking off a fraction of gaseous effluent from said removal duct (9), and separating means (13) which are able to divide in parts the taken off fraction of said gaseous effluent, at least one external furnace equipped with at least one plasma torch (14) for heating a gas and with, as lower gas injection means, at least one lower mixing chamber (15) for mixing the heated gas with a control gas which has not been heated by the at least one torch and thereby providing a gaseous mixture having a controlled temperature equal or higher than the temperature of calcination of the loaded mineral stones, and gas outlet means (18) for extracting from the inner cylinder (2) a gaseous stream containing the heated cooling air and removing it outside the kiln.
F27B 1/00 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
F27D 17/00 - Dispositions pour l'utilisation de la chaleur perdueDispositions pour l'utilisation ou pour l'élimination des gaz résiduaires
F27D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
Annular shaft kiln for calcining carbonated mineral stones, comprising an outer cylinder (1), an inner cylinder (2), forming an annular space (3) with the outer cylinder (1), material inlet means (4) for feeding said carbonated mineral stones at the top of the kiln into the annular space (3), material discharge means (5) at the bottom of the kiln for discharging the decarbonated calcined material, upper gas injection means at a first level of the annular space, provided for injecting an upper hot gas, lower gas injection means at a second level of the annular space lower than the level of the first gas injection means, provided for injecting a lower hot gas, said kiln being equipped with at least one plasma torch (18) for heating a gas and with, as lower gas injection means, at least one lower mixing chamber (7') wherein the heated gas is mixed with a control gas for providing a gaseous mixture which is said lower hot gas to inject having a controlled temperature equal or higher than the temperature of calcination of the loaded mineral stones, and process implemented in such a kiln.
C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux
F27B 1/00 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
F27B 1/10 - Parties constitutives, accessoires ou équipements spécialement adaptés à ces types de fours
F27D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
7.
METHOD FOR CALCINING CARBONATED MINERAL STONES IN A PARALLEL FLOW REGENERATIVE KILN AND IMPLEMENTED KILN.
Parallel flow regenerative kiln, comprising at least two shafts (1, 2) interconnected by a crossover channel (4) wherein each shaft comprises means for injecting a heated gas (6) inside the shaft (1) in calcination working at the top of the calcination zone (B) and means for removing (21, 23) from the kiln the cooling air which has been heated in contact with the calcined material, at a level lower than the crossover channel (4).
C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement
C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux
F27B 1/02 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale à plusieurs cuves ou chambres, p. ex. à plusieurs étages
F27B 1/04 - Combinaisons ou dispositions des cuves
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
Parallel flow regenerative kiln, comprising at least two shafts (1, 2) interconnected by a crossover channel (4), wherein each shaft comprises means for injecting a heated gas (6, 7) inside the shaft (1) in calcination working at the top of the calcination zone (B) and both from the middle of this shaft and from its periphery, the kiln further comprising an external recirculation circuit (18) which comprises a separation body (17) for taking off a fraction of the gaseous effluent from said removal duct (14), a heating device (20) able to heat gas which is connected with said separation body (17) and arranged for heating said fraction of gaseous effluent, and said means for injecting a heated gas (6, 7) inside the shaft (1) in calcination working, which are connected to the heating device (20) and inject the heated fraction of gaseous effluent at a temperature equal or higher than the temperature of calcination of the loaded mineral stones, and method for calcining carbonated mineral stones with such a kiln.
C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement
C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux
F27B 1/02 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale à plusieurs cuves ou chambres, p. ex. à plusieurs étages
F27B 1/04 - Combinaisons ou dispositions des cuves
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
Parallel flow regenerative kiln, comprising at least two shafts (1,2) interconnected by a crossover channel (4), each shaft comprising means for injecting a heated gas (6) inside the shaft (1) in calcination working at the top of the calcination zone (B), the kiln further comprising an external recirculation circuit (21) which comprises a separation body (20) for taking off a fraction of gaseous effluent from a removal duct (17), an external electrical furnace (23) connected with said separation body (20) and equipped with at least one plasma torch (24).
C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement
C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux
F27B 1/02 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale à plusieurs cuves ou chambres, p. ex. à plusieurs étages
F27B 1/04 - Combinaisons ou dispositions des cuves
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
Parallel flow regenerative kiln, wherein each shaft comprises means for injecting a heated gas (6) inside the shaft (1) in calcination working at the top of the calcination zone (B) and means for removing (21, 23) from the kiln the cooling air which has been heated in contact with the calcined material, at a level lower than the crossover channel (4).
C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement
C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux
F27B 1/02 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale à plusieurs cuves ou chambres, p. ex. à plusieurs étages
F27B 1/04 - Combinaisons ou dispositions des cuves
F27B 1/08 - Fours à cuve ou fours verticaux similaires ou à prédominance verticale chauffés autrement que par un combustible solide mélangé à la charge
Low viscosity milk of lime comprising fine lime particles in suspension in an aqueous phase containing at least a first polymer dispersant and a second dispersant being either sodium gluconate or gluconic acid, mixture of sugar containing at least glucose and fructose, said low viscosity milk of lime showing a stable viscosity over 28 days lower than or equal to 600 mPa·s, preferably equal to or lower than 300 mPa·s.
The present invention relates to a rotary kiln for burning carbonate-containing material, in particular limestone or dolomite, including a rotary tube having an inlet end for feeding the material to be burned and an outlet end for discharging the burnt material, and a burner unit arranged in the region of the outlet end, the rotary tube having an inlet zone at its inlet end and an outlet zone at its outlet end, a preheating zone and a combustion zone being arranged between the inlet zone and outlet zone in the direction of transport of the material. The rotary kiln is characterized according to the invention in that at least one projection is arranged in the outlet zone of the rotary tube, the at least one projection having a contour tapering in the direction of rotation of the rotary tube. The present invention further relates to a method for burning carbonate-containing material, in particular limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
C04B 7/43 - Traitement thermique, p. ex. précalcination, cuisson, fusionRefroidissement
The present invention relates to a rotary kiln for burning carbonate-containing material, in particular limestone or dolomite, including a rotary tube with an inlet end for the feeding of the material to be burned and an outlet end for the discharging of the burned material, the rotary tube having an inlet zone at its inlet end and an outlet zone at its outlet end wherein a preheating zone and a combustion zone are arranged between the inlet zone and outlet zone, the rotary kiln being characterized according to the invention in that in the inlet zone of the rotary tube at least one projection is provided, the at least one projection having at least one sliding surface inclined to the longitudinal axis of the rotary tube for conveying the material to be burned from the inlet zone into the preheating zone. The present invention further relates to a method for burning carbonate-containing material, in particular limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement
14.
Rotary Kiln and Method for Burning Carbonate-Containing Material, in Particular Limestone or Dolomite
The present invention relates to a rotary kiln for burning carbonate-containing material, in particular limestone or dolomite, including a rotary tube having an inlet end for feeding in the material to be burned and an outlet end for discharging the burned material; and a calciner unit which is arranged in the region of the outlet end, the rotary tube having an inlet zone at its inlet end and having an outlet zone at its outlet end, with a preheating zone and a burning zone being arranged between the inlet zone and the outlet zone in the transport direction of the material. The rotary kiln is characterized according to the invention in that a plurality of projections are arranged in the preheating zone of the rotary tube, the projections being arranged in groups one behind the other and substantially in parallel with the longitudinal axis of the rotary tube, with projections of adjacent groups of projections that are adjacent in the circumferential direction of the rotary tube being offset relative to one another in the longitudinal direction of the rotary tube such that spiral transport paths for the material to be burned are formed in the preheating zone. The present invention further relates to a method for burning carbonate-containing material, in particular limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
15.
PROCESS FOR GOLD AND/OR PLATINUM GROUP METALS HEAP LEACHING WITH LIME
Process for gold and/or platinum group metals heap leaching comprising irrigating a heap (1) with an irrigation solution (9, 10, 11 & 12) containing sodium cyanide for leaching gold and/or platinum group metals from said gold and/or platinum group metals containing ore where a lime reagent addition (B) by feeding a fine particle lime suspension containing lime particles in an aqueous phase is done in the irrigation solution.
The invention relates to a method for stabilising soils, the method comprising the steps of excavating the material and gathering the latter, supplying a calcium-magnesium compound, mixing the calcium-magnesium compound with the excavated material to form a treated material, backfilling, compacting and forming a soil having an immediate bearing index of 5% or higher, the invention being characterised in that the supply step is a step of supplying a calcium-magnesium compound and an organic additive, the method comprising a step of hardening the treated material to form the stabilised soil having a compressive strength Rc of 2 MPa or less after 28 days.
C04B 28/18 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des mélanges du type chaux et silice
E02D 17/00 - ExcavationsAménagement des bords des excavationsConstruction de digues ou de terre-pleins
17.
METHOD OF CALCINING MINERAL ROCK IN A REGENERATIVE PARALLEL-FLOW VERTICAL SHAFT FURNACE, AND FURNACE USED
A method for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace including the steps of collecting a portion of the gaseous effluent discharged, in preheating mode, from the furnace shaft in a recirculating circuit, forming an oxidizing mixture by mixing the portion collected from the gaseous effluent with concentrated dioxygen from a dioxygen source, and inserting the oxidizing mixture into the top of the shaft in firing mode so as to ensure the combustion of fuel in the presence of oxygen. The gaseous effluent discharged from the furnace having a high concentration of CO2.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Tabatabai, S. Assiyeh A.
Gartner, Robert Sebastian
Pettiau, Xavier
Kramadhati, Narahari N.
Abrégé
A calcium and/or magnesium additive for membrane fouling control made up of particles for forming a dynamic protective layer on the membrane for fouling control of the membrane, when added in the liquid flowing through the membrane, wherein the particles are synthetic mineral precipitate particles based on calcium and/or magnesium selected from the group consisting of ultrafine synthetic mineral precipitate particles and microfine synthetic mineral precipitate particles, as well as a process and system for membrane fouling control.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Tabatabai, S. Assiyeh A.
Gartner, Robert Sebastian
Pettiau, Xavier
Kramadhati, Narahari N.
Abrégé
A system for membrane fouling control configured to run one or more filter cycles, wherein each filter cycle of the one or more filter cycles includes an operation mode and a cleaning mode. The system includes: a first conduct portion; a second conduct portion; a membrane arranged between the first conduct portion and the second conduct portion. The membrane is configured in the operation mode to filter a liquid to be filtered by conducting it from the first conduct portion to the second conduct portion. A fouling control means filled with fouling control particles is added in the operation mode in the first conduct portion so that a dynamic protective layer is formed on the membrane. The fouling control particles are mineral particles based on calcium and/or magnesium.
Alkaline oxidation process for treating refractory sulfide ore or concentrate particles enriched in a metal to be recovered comprising stages in which refractory ore or concentrate particles are surface-oxidized in an alkaline oxidation step in alkaline liquid phase with calcium hydroxide forming an alkaline slurry, which slurry is thereafter mechanically activated to remove passivating coatings from the surface oxidized refractory ore particles.
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
50505050233, and wherein the second chemical composition comprises at least one second magnesium oxide compound, wherein the total content of the first and the second magnesium oxide compounds in the particulate mixture, relative to the total weight of the particulate mixture is from 30.0 to 80.0 wt.%, as expressed in wt.% of MgO. The invention further relates to methods for manufacturing of the composition (C), and to method for hot-repairing a refractory lining (L) wherein said refractory lining (L) is hot-repaired with the composition (C).
C04B 35/043 - Réfractaires obtenus à partir de mélanges à granulométrie contrôlée
C04B 35/057 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxyde de magnésium, d'oxyde de calcium ou de mélanges d'oxydes dérivés de la dolomite à base d'oxyde de calcium
C04B 35/622 - Procédés de mise en formeTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
C04B 35/66 - Réfractaires monolithiques ou mortiers réfractaires, y compris ceux contenant de l'argile
Method and installation for producing lime or dolime, comprising a calcination of calcareous or dolomitic material in contact with first fumes obtained by combustion of fuel with an oxidizing gas, a cooling of calcined lime or dolime with discharge and collect thereof and a release of a gaseous effluent containing CO2, said method further comprising a CO2 depletion of said gaseous effluent by passing it through a sorbent material based on CaO which captures CO2 and forms a CaCO3-CaO based charge, a separation between the CaCO3- CaO based charge and the CO2-depleted gaseous effluent, which is removed, a calcination of the separated CaCO3-CaO based charge in contact with second fumes obtained by combustion of a fuel poor in impurities with an oxidizing gas comprised of dioxygen and CO2, with, formation of said CaO-based sorbent material, a separation between the CaO-based sorbent material and a CO2-concentrated gas stream which is collected, a recycling of said separated CaO- based sorbent material into the CO2 depletion step and an extraction of a valorizable fraction of the CaCO3-CaO based charge with a compensatory introduction of fresh CaCO3 (29) in the calcination step.
Low viscosity milk of lime comprising fine lime particles in suspension in an aqueous phase containing at least a first polymer dispersant and a second dispersant being either sodium gluconate or gluconic acid, mixture of sugar containing at least glucose and fructose, said low viscosity milk of lime showing a stable viscosity over (28) days lower than or equal to 600mPa.s, preferably equal to or lower than 300 mPa.s.
Low viscosity milk of lime comprising fine lime particles in suspension in an aqueous phase containing at least a first polymer dispersant and a second dispersant being either sodium gluconate or gluconic acid, mixture of sugar containing at least glucose and fructose, said low viscosity milk of lime showing a stable viscosity over (28) days lower than or equal to 600mPa.s, preferably equal to or lower than 300 mPa.s.
Lime-based sorbent suitable for use in a flue gas treatment process comprising at least 70 wt. % of Ca(OH)2 and at least 0.2 wt. % to at most 10 wt. % of a first additive selected among the group of hydrogels of natural or synthetic origin, in particular superabsorbent polymers (SAPs) or in the group of cellulose ethers or a combination thereof, premix for use in a manufacturing process of said sorbent, process for manufacturing the sorbent and use of said sorbent in a flue gas treatment process
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/24 - Composés macromoléculaires d'origine naturelle, p. ex. acides humiques ou leurs dérivés
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
27.
Process for Manufacturing A Sorbent for a Flue Gas Treatment Process, Sorbent and Use of Said Sorbent in Such Flue Gas Treatment Process
The present invention is related to a process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of: providing quicklime and water in an hydrator; slaking said quicklime via a non-wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator. The process is characterized in that it comprises a further step of adding at least a first additive comprising: a compound comprising silicon, and/or, a compound comprising aluminum, and/or a compound comprising silicon and aluminum before or during said slaking step, at a molar ratio between silicon or aluminum or a combination thereof and the calcium provided to said hydrator equal to or below 0.2 and equal to or above 0.02. In some other aspects, the present invention is related to a sorbent, a premix, and a flue gas treatment process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01D 53/83 - Procédés en phase solide avec des réactifs en mouvement
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01D 53/80 - Procédés en phase semi-solide, c.-à-d. au moyen de boues
28.
METHOD AND INSTALLATION FOR HOMOGENIZING A SHEAR THINNING FLUID CONTAINED IN A CYLINDRICAL TANK
The present invention is related to an installation and to a method for recirculating and mixing a fluid which is preferably a shear-thinning fluid. The installation comprises a tank, a pump, a piping assembly connected to the pump and comprising an injection piping for injecting said fluid into the tank and a return piping coupled to the injection piping for pumping the said fluid from the tank to the injection piping, wherein the piping assembly and the tank form a flow recirculation path in which fluid is homogenized by recirculation of the fluid upon action of the said pump, the injection piping being designed such as to reinject the fluid in at least two peripheral bottom locations with an horizontal and/or inclined orientation such as to create a swirl movement in the tank and to reinject simultaneously said fluid upwardly through a central location in a zone comprised between the central axis of the tank and the half radius of the tank such as to create a jet of fluid having a main vertical component.
B01F 25/21 - Mélangeurs à jet, c.-à-d. mélangeurs utilisant des courants de fluides à grande vitesse avec des injecteurs immergés, p. ex. des buses, pour injecter des jets à haute pression dans un grand volume ou dans des chambres de mélange
B01F 25/10 - Mélange en créant un flux tourbillonnaire, p. ex. par l'introduction tangentielle de composants du flux
B01F 25/51 - Mélangeurs de circulation, p. ex. dans lesquels au moins une partie du mélange est évacuée d'un récipient et réintroduite dans celui-ci dans lesquels le mélange circule dans un ensemble de tubes, p. ex. avec l'introduction progressive d'un composant dans l’écoulement circulant
The present invention relates to a rotary kiln for burning carbonate-containing material, in particular limestone or dolomite, comprising a rotating cylinder (1) having an inlet end (2a) for feeding the material to be burned and an outlet end (4a) for discharging the burned material, and a burner unit (5) located in the region of the outlet end (4a). The rotating cylinder (1) has an inlet zone (2) at the inlet end (2a) thereof and an outlet zone (4) at the outlet end (4a) thereof, and a preheating zone (3a) and a burning zone (3b) are located between the inlet zone (2) and the outlet zone (4) in the transport direction of the material. According to the invention the rotary kiln is characterised in that at least one projection (8) is provided in the outlet zone (4) of the rotating cylinder (1), the at least one projection (8) having a contour tapering in the direction of rotation of the rotating cylinder (1). The present invention also relates to a method for burning carbonate-containing material, in particular limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
30.
ROTARY KILN AND METHOD FOR CALCINING CARBONATE-CONTAINING MATERIAL, IN PARTICULAR LIMESTONE OR DOLOMITE
The present invention relates to a rotary kiln for calcining carbonate-containing material, in particular limestone or dolomite, comprising: a rotary tube (1) having an inlet end (2a) for feeding in the material to be calcined and an outlet end (4a) for discharging the calcined material; and a calciner unit (5) which is arranged in the region of the outlet end (4a), the rotary tube (1) having an inlet zone (2) at its inlet end (2a) and having an outlet zone (4) at its outlet end (4a), with a preheating zone (3a) and a calcining zone (3b) being arranged between the inlet zone (2) and the outlet zone (4) in the transport direction of the material. The rotary kiln is characterised according to the invention in that a plurality of projections (7) is arranged in the preheating zone (3a) of the rotary tube (1), the projections (7) being arranged in groups (71) one behind the another and substantially in parallel with the longitudinal axis of the rotary tube (1), with projections (7) of adjacent groups (71) of projections (7) that are adjacent in the circumferential direction of the rotary tube (1) being offset relative to one another in the longitudinal direction of the rotary tube (1) such that spiral transport paths (S) for the material to be calcined are formed in the preheating zone (3a). The present invention further relates to a method for calcining carbonate-containing material, in particular limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
31.
ROTARY KILN AND METHOD FOR BURNING CARBONATE-CONTAINING MATERIAL, MORE PARTICULARLY LIMESTONE OR DOLOMITE
The present invention relates to a rotary kiln for burning carbonate-containing material, more particularly limestone or dolomite, comprising a rotary drum (1), which has an inlet end (2a) for the feeding of the material to be burned and an outlet end (4a) for the discharging of the burned material, the rotary drum (1) having an inlet zone (2) at its inlet end (2a) and an outlet zone (4) at its outlet end (4a), between which inlet zone (2) and outlet zone (4) there are a preheating zone (3a) and a burning zone (3b), the rotary kiln according to the invention being characterized in that at least one protrusion (6) is provided in the inlet zone (2) of the rotary drum (1), the at least one protrusion (6) having at least one sliding surface (6a) inclined with respect to the longitudinal axis of the rotary drum (1) for conveying the material to be burned from the inlet zone (2) into the preheating zone (3a). The present invention also relates to a method for burning carbonate-containing material, more particularly limestone or dolomite.
F27B 7/16 - Fours à tambours rotatifs, c.-à-d. horizontaux ou légèrement inclinés avec des moyens pour brasser ou déplacer la charge ces moyens étant fixes par rapport au tambour
32.
Method For Producing a High Concentration Reactive Quicklime Slurry With Antiscalant Properties
A method is shown for forming a high solids reactive lime slurry from quicklime. The timely addition of a carbohydrate and antiscalant polymer to slaking water provides desirable degree of control over the rate of reaction in which the heat of reaction is moderated to ensure the antiscalant polymer remains intact, thereby producing a fine quicklime slurry with low and stable viscosity.
A pyro-metallurgical process for producing a non-ferrous metal or a compound thereof, wherein a metal raw material is fed into a rotary kiln, the metal being one of arsenic (As), antimony (Sb), lead (Pb), cadmium (Cd), mercury (Hg), silver (Ag), tin (Sn), nickel (Ni), or zinc (Zn). The raw material is heated to produce a volatized material, in which the non-ferrous metal or compound thereof is produced from the volatized material. A magnesium-based additive is additionally fed to the rotary kiln in an amount of between 0.5 wt. % and 9.5 wt. % relative to the total weight of the raw material. The magnesium-based additive is heated together with the raw material to produce the volatized material and a solid product while also counteracting ring formation in the rotary kiln.
Process for gold and/or platinum group metals heap leaching comprising irrigating a heap (1) with an irrigation solution (9, 10, 11 & 12) containing sodium cyanide for leaching gold and/or platinum group metals from said gold and/or platinum group metals containing ore where a lime reagent addition (B) by feeding a fine particle lime suspension containing lime particles in an aqueous phase is done in the irrigation solution.
Alkaline oxidation process for treating refractory sulfide ore or concentrate particles enriched in a metal to be recovered comprising stages in which refractory ore or concentrate particles are surface-oxidized in an alkaline oxidation step in alkaline liquid phase with calcium hydroxide forming an alkaline slurry, which slurry is thereafter mechanically activated to remove passivating coatings from the surface oxidized refractory ore particles.
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
Alkaline oxidation process for treating refractory sulfide ore or concentrate particles enriched in a metal to be recovered comprising stages in which refractory ore or concentrate particles are surface-oxidized in an alkaline oxidation step in alkaline liquid phase with calcium hydroxide forming an alkaline slurry, which slurry is thereafter mechanically activated to remove passivating coatings from the surface oxidized refractory ore particles.
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
B02C 17/00 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
05 - Produits pharmaceutiques, vétérinaires et hygièniques
19 - Matériaux de construction non métalliques
31 - Produits agricoles; animaux vivants
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, agriculture,
horticulture and forestry (other than fungicides, herbicides
and pesticides), chemical fertilizers and products for soil
amendment; industrial chemicals consisting of calcium
carbonate, magnesium carbonate, dolomite, calcium oxide,
magnesium oxide, dolomitic lime, dolime, calcium hydroxide,
magnesium hydroxide, hydrated dolime, milk of lime or milk
of dolime, calcium or magnesium salts and mixtures out of
all of the above materials; chemical substances for
preserving foodstuffs; chemical additives for foodstuffs;
chemical products for environmental applications, including,
treatment of gases, desulphurisation, dechlorination,
defluorination, and for collecting heavy metals and
adsorbing organic pollutants, including, dioxins, furans and
hydrocarbons; chemical products for use in the treatment of
waste water, sludges, manures and organic or mineral wastes,
chemical products for use in the treatment of drinking,
industrial, municipal and process waters; chemical products
for use in metallurgical processes with mineral and
artificial additives based on the above mentioned substances
for slag formation or cleaning steps in ferrous and
non-ferrous metal-production; chemical products for use in
industry with or without the addition of additives,
including, silica, soda, caustic soda, boron, used for raw
materials in the production of different types of glass and
paper production. Paints, varnishes, lacquers, whitewash, lime wash, binding
agents for paints; colorants; preservatives against rust and
against deterioration of wood. Chemical preparations for pharmaceutical and veterinary
purposes consisting of calcium carbonate, magnesium
carbonate, dolomite, calcium oxide, magnesium oxide,
dolomitic lime, dolime, calcium hydroxide, magnesium
hydroxide, hydrated dolime, milk of lime or milk of dolime,
calcium, magnesium salts and mixtures out of all of the
above materials, additives for pharmaceutical and veterinary
purposes; preparations for destroying vermin; fungicides;
herbicides. Non-metallic building materials consisting of aggregates,
grain, sand-fractions, powders or suspension out of lime,
hydrated lime, limestone, dolime, dolomite, hydrated dolime
and mixtures out of all of the above materials; lime,
limestone; sand lime bricks, aerated concretes, mortars,
plaster; renderings; building materials, not of metal, for
improving isolation; materials (not of metal) for soil
stabilization; asphalt and building materials for making and
coating roads. Foodstuffs for cattle and poultry; lime for animal forage. Consultancy in the field of processing and treatment of
metallurgy, paper and glass. Scientific, design, research and technological services in
the field of civil engineering and chemistry; industrial
research and analyses; consultancy in the field of civil
engineering and chemistry; consultancy in the field of
protection of the environment.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
05 - Produits pharmaceutiques, vétérinaires et hygièniques
19 - Matériaux de construction non métalliques
31 - Produits agricoles; animaux vivants
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, agriculture,
horticulture and forestry (other than fungicides, herbicides
and pesticides), chemical fertilizers and products for soil
amendment; industrial chemicals consisting of calcium
carbonate, magnesium carbonate, dolomite, calcium oxide,
magnesium oxide, dolomitic lime, dolime, calcium hydroxide,
magnesium hydroxide, hydrated dolime, milk of lime or milk
of dolime, calcium or magnesium salts and mixtures out of
all of the above materials; chemical substances for
preserving foodstuffs; chemical additives for foodstuffs;
chemical products for environmental applications, including,
treatment of gases, desulphurisation, dechlorination,
defluorination, and for collecting heavy metals and
adsorbing organic pollutants, including, dioxins, furans and
hydrocarbons; chemical products for use in the treatment of
waste water, sludges, manures and organic or mineral wastes,
chemical products for use in the treatment of drinking,
industrial, municipal and process waters; chemical products
for use in metallurgical processes with mineral and
artificial additives based on the above mentioned substances
for slag formation or cleaning steps in ferrous and
non-ferrous metal-production; chemical products for use in
industry with or without the addition of additives,
including, silica, soda, caustic soda, boron, used for raw
materials in the production of different types of glass and
paper production. Paints, varnishes, lacquers, whitewash, lime wash, binding
agents for paints; colorants; preservatives against rust and
against deterioration of wood. Chemical preparations for pharmaceutical and veterinary
purposes consisting of calcium carbonate, magnesium
carbonate, dolomite, calcium oxide, magnesium oxide,
dolomitic lime, dolime, calcium hydroxide, magnesium
hydroxide, hydrated dolime, milk of lime or milk of dolime,
calcium, magnesium salts and mixtures out of all of the
above materials, additives for pharmaceutical and veterinary
purposes; preparations for destroying vermin; fungicides;
herbicides. Non-metallic building materials consisting of aggregates,
grain, sand-fractions, powders or suspension out of lime,
hydrated lime, limestone, dolime, dolomite, hydrated dolime
and mixtures out of all of the above materials; lime,
limestone; sand lime bricks, aerated concretes, mortars,
plasters, renderings, building materials for improving
isolation, materials (not of metal) for soil stabilization,
asphalt and materials for making and coating roads. Foodstuffs for cattle and poultry; lime for animal forage. Consultancy in the field of processing and treatment of
metallurgy, paper and glass. Scientific, design, research and technological services in
the field of civil engineering and chemistry; industrial
research and analyses; consultancy in the field of civil
engineering and chemistry; consultancy in the field of
protection of the environment.
40.
METHOD FOR CALCINING MINERAL ROCK IN A REGENERATIVE PARALLEL-FLOW VERTICAL SHAFT FURNACE AND FURNACE USED
The present invention relates to a method for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace, comprising collecting a portion of the gaseous effluent discharged, in preheating mode (2), from the furnace shaft in a recirculating circuit (18), forming an oxidising mixture by mixing said portion collected from the gaseous effluent with concentrated dioxygen, from a dioxygen source (20), and inserting said oxidising mixture into the top of the shaft in firing mode (1) so as to ensure the combustion of fuel in the presence of oxygen, the gaseous effluent discharged from the furnace having a high concentration of CO2.
3 mass fraction from which the slag conditioning agent can be collected. The slag conditioning agent has an equivalent mass ratio which is between 0.55 and 1.5.
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p. ex. leur aptitude à prendre ou à durcir
44.
READY-TO-USE POWDER FORMULATION FOR MAKING A HIGHLY REACTIVE, HIGH SOLIDS MILK OF LIME
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p. ex. leur aptitude à prendre ou à durcir
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
06 - Métaux communs et minerais; objets en métal
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Chemical products for use in industry, in particular
extractive metallurgical processing industry; industrial
chemical products based on calcium carbonate, magnesium
carbonate, dolomite, calcium oxide, magnesium oxide,
dolomitic lime, calcium hydroxide, magnesium hydroxide,
hydrated dolomitic lime, milk of lime and/or dolomitic lime,
calcium and/or magnesium salts and mixtures of the aforesaid
materials; chemical products for metallurgical processes;
lime-based products. Common metals, in particular ores to be used in the
metallurgical and non-ferrous industry. Treatment and processing of metallic ores.
46.
CALCIUM AND/OR MAGNESIUM ADDITIVE FOR MEMBRANE FOULING CONTROL AND SYSTEM AND PROCESS FOR MEMBRANE FOULING CONTROL USING THE ADDITIVE
Calcium and/or magnesium additive for membrane fouling control and System and process for membrane fouling control using the additive Calcium and/or magnesium additive for membrane fouling control, in particular comprising particles (6) for forming a dynamic protective layer (7) on the membrane (1) for fouling control of the membrane (1), when added in the liquid flowing through the membrane (1), characterized in that particles (6) comprise synthetic mineral precipitate particles based on calcium and/or magnesium chosen amongst ultrafine synthetic mineral precipitate particles and microfine synthetic mineral precipitate particles, process and system for membrane fouling control.
Method for calcination in an annular shaft furnace comprising a supply of material to be calcined at the top of an annular space (3) of the furnace into which the material descends, an introduction in (5) of first and in (6) of second combustion flue gases into this annular space, a discharge at the top of the furnace in (12) of an upper gas stream, a removal in (18) of a portion of the upper gas stream, a formation of a first oxidizing mixture by mixing this portion of the upper gas stream with pure dioxygen (19) and, to form the second combustion flue gases, a combustion of a fuel in this first oxidizing mixture, as well as an elimination in (20) of a lower gas stream containing the air for cooling the product, after said cooling.
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
F23C 9/06 - Appareils à combustion caractérisés par des dispositions pour renvoyer les produits de combustion ou les gaz de fumée dans la chambre de combustion destinés à obtenir une combustion complète
F23D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
F23L 7/00 - Alimentation du foyer en liquides ou gaz non combustibles autres que l'air, p. ex. oxygène, vapeur d'eau
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Chemicals used in industry, as well as in agriculture,
horticulture and forestry being liquid and solid calcic
and/or magnesian products intended for the production and
treatments of water, including drinking water, industrial
and municipal water, waste water, sludges, manures and
organic/mineral wastes. Lime wash. Services relating to treatment and purification of water;
treatment of water, including drinking water and waste
water; treatment of industrial/municipal process waters;
rental of water treatment apparatus; rental of water
filtration units for commercial purpose; services relating
to filtration of liquids by chemical methods; treatment of
waste water from industrial processes.
50.
BURNER FOR PRODUCING A FLAME IN A COMBUSTION CHAMBER OF AN ANNULAR VERTICAL SHAFT KILN, COMBUSTION CHAMBER FOR AN ANNULAR VERTICAL SHAFT KILN AND PROCESS OF COMBUSTION IN SUCH A COMBUSTION CHAMBER
Burner (100) for producing a flame in a combustion chamber (200) of an annular vertical shaft kiln (300) comprising: a. a first innermost sleeve (101) having a bore (104) and a distal extremity (112) directed through the inside of the said combustion chamber (200), said first innermost sleeve (101) providing a bluff body to create a bluff body effect on the flame, b. a second sleeve (103) surrounding said first innermost sleeve (101) and forming a first annular channel (105) with the said first innermost sleeve (101), the said first annular channel (105) being provided for an annular injection of a combustible, preferably a solid powdered combustible carried by a carrier fluid.
Lime-based sorbent suitable for use in a flue gas treatment process comprising at least 70 wt. % of Ca(OH)2 and at least 0.2 wt. % to at most 10 wt. % of a first additive selected among the group of hydrogels of natural or synthetic origin, in particular superabsorbent polymers (SAPs) or in the group of cellulose ethers or a combination thereof, premix for use in a manufacturing process of said sorbent, process for manufacturing the sorbent and use of said sorbent in a flue gas treatment process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
22 and at least 0.2 wt. % to at most 10 wt. % of a first additive selected among the group of hydrogels of natural or synthetic origin, in particular superabsorbent polymers (SAPs) or in the group of cellulose ethers or a combination thereof, premix for use in a manufacturing process of said sorbent, process for manufacturing the sorbent and use of said sorbent in a flue gas treatment process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Chemicals used in industry (except chemical barrier products
used for the metalworking and being release agents), namely
calcitic and/or magnesian products for production and
treatment of drinking and industrial/municipal process
waters.
54.
METHOD AND INSTALLATION FOR HOMOGENIZING A SHEAR THINNING FLUID CONTAINED IN A CYLINDRICAL TANK
The present invention is related to an installation and to a method for recirculating and mixing a fluid which is preferably a shear-thinning fluid. The installation comprises a tank (200), a pump (101), a piping assembly connected to the pump and comprising an injection piping (102) for injecting said fluid into the tank (200) and a return piping (103) coupled to the injection piping (102) for pumping the said fluid from the tank (200) to the injection piping (102), wherein the piping assembly and the tank (200) form a flow recirculation path in which fluid is homogenized by recirculation of the fluid upon action of the said pump (101), the injection piping (102) being designed such as to reinject the fluid in at least two peripheral bottom locations (106a, 106b) with an horizontal and/or inclined orientation such as to create a swirl movement in the tank and to reinject simultaneously said fluid upwardly through a central location (205) in a zone comprised between the central axis (203) of the tank and the half radius of the tank such as to create a jet of fluid having a main vertical component.
A sorbent dispersion method and device for reducing the amount of noxious compounds in effluent gas streams from industrial processes. Exhaust gases pass through an exhaust duct (107) where they are contacted with a sorbent composition which injected into the exhaust gas stream through an injector device. The injector device has a central passageway (101) through which the sorbent composition is conveyed by positive air pressure. At least one nozzle (108) is mounted about the exterior of the injector device and is arranged at an impingement angle with respect to a centerline (106) of the injector device to more fully effect dispersion of the sorbent particles within the exhaust gas stream.
B01D 53/10 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles avec adsorbants dispersés
B05B 7/14 - Appareillages de pulvérisation pour débiter des liquides ou d'autres matériaux fluides provenant de plusieurs sources, p. ex. un liquide et de l'air, une poudre et un gaz agencés pour projeter des matériaux en particules
B01F 5/00 - Mélangeurs à écoulement; Mélangeurs pour matériaux tombants, p.ex. particules solides
56.
METHOD FOR DOSING QUICKLIME IN AT LEAST ONE DOSING POINT IN A PROCESSING UNIT
The present invention relates to a method for dosing quicklime in at least one dosing point (34) of a processing unit (1) wherein a process requiring calcium hydroxide which is to be provided by the dosed quicklime is carried out or wherein calcium hydroxide is consumed as a reactant reagent. The quicklime is dispersed into a flow of aqueous liquid to produce a dispersion. The dispersion is discharged in the processing unit (1) when it still contains available lime in the form of calcium oxide and this calcium oxide is allowed to hydrate further in the processing unit (1). The quicklime can thus be dosed easily and accurately into the processing unit since it does not need to be dosed in dry form into the processing unit (1). Moreover, no voluminous slaker is required to first convert the quicklime into milk of lime before dosing it into the processing unit.
B01F 15/02 - Mécanismes d'alimentation ou d'évacuation
B01F 15/04 - Réalisation de proportions prédéterminées de substances à mélanger
C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p. ex. par addition d'oligo-éléments
B01F 3/12 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de liquides avec des solides
B01F 7/00 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Chemicals used in industry (except chemical barrier products used for the metalworking and being release agents), namely calcitic and/or magnesian products for production and treatment of drinking and industrial/municipal process waters.
58.
PROCESS FOR REFINING STEEL AND DEPHOSPHORIZATION AGENT USED IN SAID PROCESS
Process for refining and dephosphorizing steel using a slag conditioner based on phases of calcium ferrites wherein the mass ratio of mono-calcium ferrites: di-calcium ferrites is superior to 0.5 and wherein calcium-magnesium compound is charged at a minimum amount, expressed in CaO equivalent, equal or superior to 20 kg/t of metallic charge and said slag conditioner is charged at a minimum amount equal or superior to 2 kg/t of metallic charge.
Process for manufacturing a slag conditioning agent for steel desulfurization wherein a dried slag material obtained from secondary steelmaking process is mixed with quicklime particles to produce a slag conditioning agent.
wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.
Process for manufacturing a slag conditioning agent for steel desulfurization wherein a dried slag material obtained from secondary steelmaking process is mixed with quicklime particles to produce a slag conditioning agent.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Heiszwolf, Johan
Brasseur, Alain
Mazzoun, Mehdi
Abrégé
Process for treating flue gases in a circulating dry scrubber device wherein flue gases containing pollutants pass to a reactor where said flue gases contact a sorbent comprising high pore volume and high specific surface area slaked lime or hydrated lime being further sent to a particulate control device where said sorbent particles are separated from said flue gases substantially depleted in pollutants and form respectively a flow of flue gases substantially depleted in pollutants and a flow of sorbent particles being recycled and returned to said reactor.
The present invention is related to a process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of: providing quicklime and water in an hydrator; slaking said quicklime via a non-wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator. The process is characterized in that it comprises a further step of adding at least a first additive comprising: a compound comprising silicon, and/or, a compound comprising aluminum, and/or a compound comprising silicon and aluminum before or during said slaking step, at a molar ratio between silicon or aluminum or a combination thereof and the calcium provided to said hydrator equal to or below 0.2 and equal to or above 0.02. In some other aspects, the present invention is related to a sorbent, a premix, and a flue gas treatment process.
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Foo, Rodney
Lyons, David
Saratovsky, Ian
Abrégé
A powdery calcium-magnesium compound used as a sorbent composition in flue gas treatment, compatible with electrostatic precipitators. The calcium magnesium compound is doped with calcium nitrate or nitric acid to reduce the electrical resistivity of the particles, increasing their collection efficiency.
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
B01D 53/10 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles avec adsorbants dispersés
B03C 3/017 - Combinaison de la séparation par effet électrostatique avec d'autres procédés, non prévue ailleurs
B01J 23/02 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe des métaux alcalins ou alcalino-terreux ou du béryllium
66.
PROCESS FOR OBTAINING SIZE-CALIBRATED TRI-CALCIUM ALUMINATE PARTICLES AND USE OF SUCH PARTICLES IN A PROCESS OF ALUMINA REFINING
The present invention describes a process for obtaining size-calibrated tri-calcium aluminate (TCA) particles comprising the steps of providing a process liquor containing sodium aluminate; providing a suspension of size-calibrated calcium hydroxide particles; mixing said selected suspension of size-calibrated calcium hydroxide particles with said process liquor to allow them to react to obtain the said size-calibrated tri-calcium aluminate particles.
A powdery calcium-magnesium compound used as a sorbent composition in flue gas treatment, compatible with electrostatic precipitators. The calcium magnesium compound is doped with calcium nitrate or nitric acid to reduce the electrical resistivity of the particles, increasing their collection efficiency.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
68.
SORBENT COMPOSITION FOR AN ELECTROSTATIC PRECIPITATOR
A powdery calcium-magnesium compound used as a sorbent composition in flue gas treatment, compatible with electrostatic precipitators. The calcium magnesium compound is doped with calcium nitrate or nitric acid to reduce the electrical resistivity of the particles, increasing their collection efficiency.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
69.
Method for handling a slag pot or ladle and pyrometallurgical tools
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Denollin, Guillaume
Abrégé
A method is shown for handling a slag pot or ladle and pyrometallurgical tools made form steel or cast iron, comprising the steps of spraying a mineral suspension onto a wall and bringing said slag pot or ladle or the pyrometallurgical tool into service, wherein said mineral suspension comprises calcic particles in suspension in an aqueous phase forming a calcic particle milk having a calcic particle content of between 20% and 60% by weight with respect to the weight of said calcic particle milk, said mineral layer being a fine layer.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Lorgouilloux, Marion
Pelletier, Marc
Gartner, Robert Sebastian
Chopin, Thierry
Abrégé
A mineral composition is shown which contains a mixed solid phase of synthetic calcium and magnesium carbonates, formed of a crystallized calcic portion and a plate-like crystallized magnesian portion. The crystals of the calcic portion and those of the magnesian portion are aggregated in the form of composite aggregates. These aggregates themselves are at least partly agglomerated in the form of agglomerates. The calcic portion has at least one carbonate such as calcite or the mixtures of calcite and aragonite. The magnesian portion contains hydromagnesite in plate-like form. The aggregates are further formed of a calcic core on which hydromagnesite plates are aggregated. The mineral composition has defined thermal conductivity properties making it suitable for use as a building material.
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
E04B 1/74 - Isolation thermique ou acoustique, absorption ou réflexion de la chaleur ou du sonAutres méthodes de construction procurant des conditions thermiques ou acoustiques favorables, p. ex. par accumulation de chaleur à l'intérieur des murs
71.
Thermally treated briquettes containing a “quick” calcium-magnesium compound and calcium ferrites, and method of manufacture thereof
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Criniere, Guillaume
Nispel, Michael
Abrégé
Composition in the form of green or thermally treated briquettes comprising at least one “quick” calcium-magnesium compound and an iron-based compound, the method of production thereof and uses thereof.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Denollin, Guillaume
Abrégé
Method for handling a slag pot or ladle or pyro-metallurgical tools comprising the steps of spraying a mineral suspension onto a wall and putting into service of said slag pot or ladle or of the pyro-metallurgical tool, wherein said mineral suspension comprises calcium particles in suspension in an aqueous phase forming a calcium particle slurry containing a carbon hydrate at a content between 0.2 and 3%.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Criniere, Guillaume
Nispel, Michael
Abrégé
A method for manufacturing green or thermally treated briquettes which are made up of at least one quick calcium-magnesium compound that is an iron-based compound. The method includes the steps of supplying a homogeneous pulverulent mixture to a roller press, the press having pockets where the pulverulent mixture is compressed to form the green briquettes. The rollers of the roller press develop linear speeds at the periphery of the rollers between 10 and 100 cm/s and linear pressures between 60 and 160 kN/cm. The method can also include a thermal treatment of the green briquettes to produce fired briquettes containing calcium ferrite, the briquettes having a Shatter Test Index less than 8%, and a porosity value greater than or equal to 30%.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Criniere, Guillaume
Nispel, Michael
Abrégé
A composition based on quick calcium-magnesium compounds in the form of briquettes is shown, as well as a method for the preparation and use thereof. The composition of the briquettes contains quicklime in the form of milled particles at a concentration of at least 10% by weight and at most 100% by weight relative to the weight of the composition. The compositions in the form of briquettes have a Shatter test index of less than 10%.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Lorgouilloux, Marion
Abrégé
The present invention concerns a powdery slaked lime composition having an Alpine fluidity greater than 50% and including a first fraction of particles having a size less than 32 μm and a second fraction of particles with the size greater than 32 μm, the second fraction being less than 10% by weight, compared to the total weight of the composition. The invention also relates to a method for producing same.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Lorgouilloux, Marion
Abrégé
The present invention relates to a method for producing a highly porous fine powdery slaked lime composition, comprising a fluidification step for forming said highly porous fine powdery slaked lime composition having an Alpine fluidity greater than 50% and which is carried out in a dryer/grinder chosen from the group consisting of a pin-type dryer/grinder, a cage-type dryer/grinder, an instantaneous dryer/disagglomerator and a combination of these until the powdery slaked lime composition has a non-solid residual-phase content of less than or equal to 3.5% by weight and greater than or equal to 0.3% by weight, as well as the product obtained therefrom.
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
77.
Process for manufacturing a milk of slaked lime of great fineness and milk of lime of great fineness thereby obtained with process water
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Criniere, Guillaume
Gartner, Robert Sebastian
Abrégé
Process for manufacturing a milk of lime of great fineness comprising at least the steps of providing one lime compound and forming said milk of lime with a process water and said lime compound.
Process for treating flue gases in a circulating dry scrubber device wherein flue gases containing pollutants pass to a reactor where said flue gases contact a sorbent comprising high pore volume and high specific surface area slaked lime or hydrated lime being further sent to a particulate control device where said sorbent particles are separated from said flue gases substantially depleted in pollutants and form respectively a flow of flue gases substantially depleted in pollutants and a flow of sorbent particles being recycled and returned to said reactor.
Powdery mineral compound, sorbent composition based on mineral compound for being used in flue gas treatment, compatible with electrostatic precipitators, and process for reducing the resistivity a powdery sorbent composition for flue gas treatment installation comprising an electrostatic precipitator.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01J 20/06 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B03C 3/013 - Traitement par des additifs chimiques, p. ex. avec du SO3
B03C 3/02 - Installations alimentées en électricité de l'extérieur
Powdery calcium-magnesium compound, sorbent composition based on calcium-magnesium for being used in flue gas treatment, compatible with electrostatic precipitators and process for reducing the resistivity of a powdery sorbent composition for flue gas treatment installation comprising an electrostatic precipitator.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01J 20/06 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B03C 3/013 - Traitement par des additifs chimiques, p. ex. avec du SO3
B03C 3/02 - Installations alimentées en électricité de l'extérieur
81.
Sorbent composition for an electrostatic precipitator
A powdery calcium-magnesium compound, sorbent composition is shown which is based on calcium-magnesium. The compound is used in flue gas treatment and has characteristics which make it particularly compatible with electrostatic precipitators used in flue gas treatment installations.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Gärtner, Robert Sebastian
Diaz Chavez, Luis Alfredo
Abrégé
A composition of milk of lime comprising particles of slaked lime suspended in an aqueous phase, characterised in that said particles of slaked lime have a particle size described by a particle size distribution profile that is narrow and monomodal and the method of production thereof.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
a) and intended to be in communication with the furnace pipe, and a powder conveying pipe (120) which has a diameter DT and a downstream end (121), characterized in that the second part of the peripheral pipe has a length L≥the diameter (DP2) of the second part of the peripheral pipe, and in that the diameter (DT) and the diameter (DP2) are connected by the relationship 0
The present invention is related to a process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of : providing quicklime and water in an hydrator; slaking said quicklime via a non- wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator. The process is characterized in that it comprises a further step of adding at least a first additive comprising: a compound comprising silicon, and/or, a compound comprising aluminum, and/or a compound comprising silicon and aluminum before or during said slaking step, at a molar ratio between silicon or aluminum or a combination thereof and the calcium provided to said hydrator equal to or below 0.2 and equal to or above 0.02. In some other aspects, the present invention is related to a sorbent, a premix, and a flue gas treatment process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
C04B 2/06 - Extinction avec addition de substances, p. ex. d'agents hydrophobes
Process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of providing quicklime and water in an hydrator; slaking said quicklime via a non-wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator and a further step of adding at least one compound comprising silicon or aluminum or a combination thereof before or during said slaking step at a molar ratio between silicon or aluminum or a combination thereof and the calcium equal to or below 0.2 and equal to or above 0.02.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
The present invention is related to a process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of : providing quicklime and water in an hydrator; slaking said quicklime via a non- wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator. The process is characterized in that it comprises a further step of adding at least a first additive comprising: a compound comprising silicon, and/or, a compound comprising aluminum, and/or a compound comprising silicon and aluminum before or during said slaking step, at a molar ratio between silicon or aluminum or a combination thereof and the calcium provided to said hydrator equal to or below 0.2 and equal to or above 0.02. In some other aspects, the present invention is related to a sorbent, a premix, and a flue gas treatment process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de l'oxyde ou de l'hydroxyde d'aluminiumCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Habib, Ziad
Padox, Guilhem
Abrégé
Process for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace, containing at least two shafts (1, 2) interconnected by a gas transfer channel (3), each shaft operating alternately in firing mode and in preheating mode, the firing mode comprising a combustion of fuel in the presence of air so as to obtain a firing of the rock to give calcined rock, an emission of combustion gases, and a passage of these gases from one shaft to the other by means of said channel (3), the preheating mode comprising a heat exchange between said rock and said combustion gases from said channel (3), this process additionally comprising an injection of supplementary air into said channel (3) with oxidation of unburnt products contained in the combustion gases passing through this channel.
The invention relates to a method for handling a slag pot or tank or pyrometallurgical tools made of steel or cast iron, comprising the steps of spraying a mineral suspension on a wall and activating the operation of said slag pot or tank or pyrometallurgical tool, where said mineral suspension comprises calcium particles in suspension in an aqueous phase forming a slurry of calcium particles containing between 20 and 60 wt. % of calcium particles in relation to the weight of said slurry of calcium particles, said mineral layer being a thin layer.
The invention relates to a method for handling a slag pot or tank or pyrometallurgical tools, comprising the steps of spraying a mineral suspension on a wall and activating the operation of said slag pot or tank or pyrometallurgical tool, where said mineral suspension comprises calcium particles in suspension in an aqueous phase forming a slurry of calcium particles containing between 0.2 and 3% of a carbon hydrate.
The present invention concerns the use of a magnesium-including compound as binder for producing metallic ore fluxed pellets, in particular iron ore fluxed pellets, said magnesium-including compound comprising semi-hyd rated dolime fitting the general formula aCa(OH)2.bMg(OH)2.cMgO, a, b, and c being weight fractions wherein the weight fraction b of Mg(OH)2 is between 0.5 and 19,5 % by weight with respect to the total weight of said semi-hydrated dolime.
S. A. Lhoist Recherche et Developpement (Belgique)
Inventeur(s)
Chini, Stephan
Lorgouilloux, Marion
Nyssen, Olivier
Francoisse, Olivier
Abrégé
Process for manufacturing highly porous slake lime comprising a feeding step of quicklime, a feeding step of water in a feeding zone of a hydrator, a slaking step of said quicklime in a slaking zone of said hydrator and a maturation step in a maturation zone of said hydrator to form slaked lime.
The present invention concerns the use of a calcium magnesium compound as binder for producing metallic ore fluxed pellets, in particular iron ore fluxed pellets, said calcium magnesium compound is fitting the general formula aCa(OH)2.bMg(OH)2.cMg0.dCaO.eCaCO3.fMgCO3, a, b, c, d, e and f being weight fractions comprised between 0 % and 100 % by weight with respect to the total weight of said calcium magnesium compound.
The present invention concerns the use of a magnesium-including compound as binder for producing metallic ore fluxed pellets, in particular iron ore fluxed pellets, said magnesium-including compound comprising semi-hydrated dolime fitting the general formula aCa(OH)2.bMg(OH)2.cMgO, a, b, and c being weight fractions wherein the weight fraction b of Mg(OH)2 is between 0.5 and 19.5 % by weight with respect to the total weight of said semi-hydrated dolime.
wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.
Process and device for pneumatically conveying a powdery material comprising the steps of - Pneumatically conveying a powdery material in a pneumatic conveying pipeline (first) and into said recipient by a flow generated by a blower, - A powdery material dosing step, - A fluctuation step of pressure drop in said pneumatic conveying pipeline or up to said recipient, wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.
B01J 8/00 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés
B65G 53/00 - Transport de matériaux en vrac par caniveaux, tuyaux ou tubes, par flottage ou par écoulement de gaz, de liquide ou de mousse
B65G 53/06 - Systèmes à pression de gaz fonctionnant sans fluidification des matériaux
B65G 53/34 - Transport de matériaux en vrac par caniveaux, tuyaux ou tubes, par flottage ou par écoulement de gaz, de liquide ou de mousse Détails
B65G 53/66 - Utilisation de dispositifs indicateurs ou de commande, p. ex. pour commander la pression du gaz, pour régler le pourcentage matériaux-gaz, pour signaler ou éviter l'embouteillage des matériaux
96.
PROCESS FOR PNEUMATICALLY CONVEYING A POWDERY MATERIAL
Process and device for pneumatically conveying a powdery material comprising the steps of: pneumatically conveying a powdery material in a pneumatic conveying pipeline (first) and into said recipient by a flow generated by a blower, a powdery material dosing step, a fluctuation step of pressure drop in said pneumatic conveying pipeline or up to said recipient, wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.
B01J 8/00 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés
B65G 53/00 - Transport de matériaux en vrac par caniveaux, tuyaux ou tubes, par flottage ou par écoulement de gaz, de liquide ou de mousse
B65G 53/06 - Systèmes à pression de gaz fonctionnant sans fluidification des matériaux
B65G 53/34 - Transport de matériaux en vrac par caniveaux, tuyaux ou tubes, par flottage ou par écoulement de gaz, de liquide ou de mousse Détails
B65G 53/66 - Utilisation de dispositifs indicateurs ou de commande, p. ex. pour commander la pression du gaz, pour régler le pourcentage matériaux-gaz, pour signaler ou éviter l'embouteillage des matériaux
97.
BAKED BRIQUETTES CONTAINING A BURNT CALCIUM-MAGNESIUM COMPOUND AND CALCIUM FERRITES, AND METHOD FOR MANUFACTURING SAME
Disclosed are a composition in the form of raw or baked briquettes comprising at least one burnt calcium-magnesium compound and an iron-based compound, a method for obtaining said composition, and the uses thereof.
C01F 5/16 - Hydroxyde de magnésium par traitement de la magnésie, p. ex. dolomite calcinée, avec de l'eau ou des solutions de sels ne contenant pas de magnésium
C01F 11/00 - Composés du calcium, du strontium ou du baryum
Disclosed is a composition based on burnt calcium-magnesium compounds in the form of tablets, characterized in that said composition comprises quicklime in the form of crushed particles at a concentration of 10 to 100% by weight in relation to the weight of the composition, the composition in the form of tablets having a shatter index of less than 10%. Also disclosed are a method for the preparation of said composition as well as the use thereof.
C01F 5/16 - Hydroxyde de magnésium par traitement de la magnésie, p. ex. dolomite calcinée, avec de l'eau ou des solutions de sels ne contenant pas de magnésium
C01F 11/00 - Composés du calcium, du strontium ou du baryum
Disclosed are a composition in the form of raw or baked briquettes comprising at least one burnt calcium-magnesium compound and an iron-based compound, a method for obtaining said composition, and the uses thereof.
C01F 5/16 - Hydroxyde de magnésium par traitement de la magnésie, p. ex. dolomite calcinée, avec de l'eau ou des solutions de sels ne contenant pas de magnésium
C01F 11/00 - Composés du calcium, du strontium ou du baryum
Disclosed are a composition in the form of raw or baked briquettes comprising at least one burnt calcium-magnesium compound and an iron-based compound, a method for obtaining said composition, and the uses thereof.
C01F 5/16 - Hydroxyde de magnésium par traitement de la magnésie, p. ex. dolomite calcinée, avec de l'eau ou des solutions de sels ne contenant pas de magnésium
C01F 11/00 - Composés du calcium, du strontium ou du baryum