For treating petrochemical catalysts for the selective extraction of molybdenum therefrom, a plant and a process are proposed for extracting the molybdenum by charging a batch of catalysts to a rotary kiln of which the refractory is heated or preheated to a high temperature, and setting the kiln in rotation so that the catalyst charge undergoes constant renewal of the surface in contact with the superheated refractory. The catalyst charge is brought to temperatures of the order of 1300° C. (1250 to 1350° C.), which allow around 95% of the molybdenum present to sublime.
The invention mainly relates to a method for treating oily sludge, comprising at least the steps of: preparing a residual oily sludge comprising less than 10% by mass of oil and less than 15% by mass of water, this step being carried out if the oily sludge to be treated has at least 10% by mass of oil and/or at least 15% by mass of water, mixing the oily sludge comprising less than 10% by mass of oil and less than 15% by mass of water or the residual oily sludge obtained in the preceding step with water, which is added in a proportion of between 3 and 20% by mass, and with at least one organic binder, which is added in a proportion of less than 15% by mass, agglomerating the mixture obtained in the preceding step by an extrusion operation, and obtaining an extrudate, the method being devoid of any addition of a mineral compound during the mixing step.
C02F 103/16 - Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
3.
Pyrometallurgical Method for Recycling Shredded Material of Waste from the Production of New and Defective or End-of-Life Batteries for Electric Vehicles or Portable Li-Ion Batteries
A pyrometallurgical process for recycling shredded spent electric vehicle batteries of Li-ion type and/or waste from the production of these new batteries and battery rejects, and/or portable batteries of Li-ion type. The process entails the addition of iron, smelting via the supply of energy, separation of a slag, oxidizing treatment and separation of a second slag.
For treating petrochemical catalysts for the selective extraction of molybdenum therefrom, a plant and a process are proposed for extracting the molybdenum by charging a batch of catalysts to a rotary kiln of which the refractory is heated or preheated to a high temperature, and setting the kiln in rotation so that the catalyst charge undergoes constant renewal of the surface in contact with the superheated refractory. The catalyst charge is brought to temperatures of the order of 1300°C (1250 to 1350°C), which allow around 95% of the molybdenum present to sublime.
c) extracting from the furnace by sequential castings the slag formed in step b) to recover a cast iron melt enriched with metal or metals, and recover a slag containing the components of the catalyst other than metals, with the exception of vanadium.
C22B 9/05 - Refining by treating with gases, e.g. gas flushing
C22B 9/10 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals with refining or fluxing agentsUse of materials therefor
6.
PYROMETALLURGICAL METHOD FOR RECYCLING SHREDDED MATERIAL OF WASTE FROM THE PRODUCTION OF NEW AND DEFECTIVE OR END-OF-LIFE BATTERIES FOR ELECTRIC VEHICLES OR PORTABLE LI-ION BATTERIES
The invention relates to a pyrometallurgical method for recycling shredded material of end-of-life Li-ion electric vehicle batteries, and/or waste from the production of these new and defective batteries, and/or portable Li-ion batteries. The method involves adding iron, melting by adding energy, separating a slag, carrying out an oxidising treatment and separating a second slag.
The present invention relates to a method for treating a spent catalyst containing at least one refractory mineral oxide, one or more metals in the form of sulphide(s) chosen from the following metals: molybdenum, nickel, cobalt, tungsten, vanadium, as well as carbon compounds, said method comprising the following successive steps: a) in a rotary converter-type smelting furnace, preparing a cast-iron melt surmounted by a layer of slag; subsequently b) introducing the spent catalyst into the furnace and bringing it into contact with the slag and the cast-iron melt, while maintaining the rotation of the furnace and injecting an oxidising gas containing oxygen into the furnace, over the mixture of catalyst, slag and cast iron, so as to cause combustion of carbonaceous and/or sulphur compounds which are released from the catalyst upon coming into contact with the slag and the molten iron; subsequently c) extracting, by means of sequential casting, the slag formed in step b) from the furnace so as, on the one hand, to recover in the furnace a cast-iron melt enriched with metal(s) and, on the other hand, to recover a slag containing the components of the catalyst other than the metals, with the exception of vanadium which, when the spent catalyst contains vanadium, ends up in the slag.
The invention relates to a method for producing rock wool and cast iron by melting a mixture of materials such as basalt, blast-furnace slag, coke and components necessary for melting, with an admixture containing alumina, said admixture making it possible to adjust the alumina content in order to obtain a rock wool having the following composition (as wt %): Al2O3: 18-22; SiO2: 40-50; CaO: 10-15; MgO: <10; FeO: <2; Na2O: <4; K2O: <2. The method includes the following operations: producing by melting a slag and a cast iron, separating the slag and the cast iron, and performing a fibring operation on the slag followed by a bonding operation in order to obtain the rock wool. According to the invention, at least one spent adsorbent and/or catalyst is used as an admixture, said catalyst containing alumina in Al2O3 form. Said adsorbent and/or catalyst preferably contains at least one metal, and said metal is retrieved in the cast iron.
C03B 37/05 - Manufacture of glass fibres or filaments by using centrifugal force by projecting on a rotating body having no radial orifices
C03C 13/06 - Mineral fibres, e.g. slag wool, mineral wool, rock wool
C03C 1/00 - Ingredients generally applicable to manufacture of glasses, glazes or vitreous enamels
C03C 3/087 - Glass compositions containing silica with 40% to 90% silica by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
C21B 11/02 - Making pig-iron other than in blast furnaces in low shaft furnaces
The invention concerns a method, utilising an oxy-gas or oxy-fuel or oxy-carbon burner, for melting used alkaline, saline or zinc-air batteries or Ni-Cd or Ni-MH accumulators or black mass. The method is characterised in that the used batteries, accumulators or black mass are loaded into a melting vessel (1) in which an iron-based liquid metal bath (3) and, above the bath, a layer of slag (5), has previously been established, and in that this layer of slag is used as a buffer in order to avoid direct contact of the batteries or accumulators with the liquid metal of the bath (3) and as a carrier for heat transfer and as a reduction medium of metal oxides contained in the batteries and accumulators and the black mass. The invention can be used for recycling used batteries and accumulators.
The invention relates to a method for producing rock wool and cast iron by melting a mixture of materials such as basalt, blast-furnace slag, coke and components necessary for melting, with an admixture containing alumina, said admixture making it possible to adjust the alumina content in order to obtain a rock wool having the following composition (as wt %): Al2O3: 18-22; SiO2: 40-50; CaO: 10-15; MgO: <10; FeO: <2; Na2O: <4; K2O: <2. The method includes the following operations: producing by melting a slag and a cast iron, separating the slag and the cast iron, and performing a fibring operation on the slag followed by a bonding operation in order to obtain the rock wool. According to the invention, at least one spent adsorbent and/or catalyst is used as an admixture, said catalyst containing alumina in Al2O3 form. Said adsorbent and/or catalyst preferably contains at least one metal, and said metal is retrieved in the cast iron.
A method for upgrading used or rejected electric battery cells, which include upgradable compounds, such as iron, zinc, manganese, copper, and fixed and volatile carbon, and heavy metals and dangerous compounds. The used or rejected battery cells are introduced as a load into a furnace for melting metal, such as a cupola furnace, a free arc furnace, or an induction furnace. A device for purifying gases produced by the furnace and for capturing and removing noxious elements, such as mercury, chlorides, and fluorides, and heavy molecules such as dioxins, furans, and aromatic substances, is provided in a discharge route of the hot gases, downstream from the melting furnace.
B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
12.
METHOD FOR RECYCLING USED OR DISCARDED PORTABLE ELECTRICAL BATTERIES
The invention relates to a method for recycling used or discarded portable electrical batteries which comprise recyclable components such as iron, zinc, manganese, copper and fixed and volatile carbon, as well as heavy metals and hazardous compounds. The method is characterized in that the used or discarded batteries are introduced as a load into a metal-melting, smelting type furnace (1,40,44), such as a cupola furnace, a free electric arc furnace or induction furnace, and for which a gas purification device (16,23) is provided in the hot gas evacuation channel after the melting furnace to capture and eliminate harmful elements such as mercury, chlorides or fluorides and heavy molecules such as dioxins, furans and aromatics. The invention can be used for recycling used and rejected batteries.
patents
