METHOD FOR PREPARING METALLURGICAL-GRADE ALUMINA BY USING FLUIDIZED BED FLY ASH

Provided a method for preparing metallurgical-grade alumina by using fluidized-bed fly ash, comprising: a) removing iron by wet magnetic separation after crushing the fly ash; b) reacting the fly ash after magnetic separation with hydrochloric acid to obtain a hydrochloric leachate; c) passing the hydrochloric leachate through macro-porous cationic resin to deeply remove iron to obtain a refined aluminum chloride solution; d) concentrating and crystallizing the refined aluminum chloride solution to obtain an aluminum chloride crystal; and e) calcining the aluminum chloride crystal to obtain the metallurgical-grade alumina. The method is simple, the procedure is easy to be controlled, the extraction efficiency of alumina is high, the production coast is low, and the product quality is steady. 1. A method for preparing metallurgical-grade alumina by using fluidized-bed fly ash , comprises the following steps:a) crushing the fly ash to a size of 100 mesh or smaller, adding water therein to prepare a slurry having a solid content of 20-40 wt %, removing iron from the slurry by wet magnetic separation, such that Fe content of the fly ash is reduced to 1.0 wt % or less, and filtering the slurry to obtain a filtered cake;b) adding hydrochloride acid into the filter cake from step a) to react the fly ash with the hydrochloride acid, and then subjecting the reaction product to solid-liquid separation and rinse to yield a hydrochloric leachate having a pH value in the range of 1-3;c) passing the hydrochloric leachate through a column loading with a macro-porous cationic resin to further remove iron to obtain a refined aluminum chloride solution;d) subjecting the refined aluminum chloride solution to vacuum concentration, then cooling the concentrated solution for crystallization, and conducting solid-liquid separation to obtain aluminum chloride crystal; ande) calcining the aluminum chloride crystal at a temperature in the range of 900-1200° C. for 1-4 hours to obtain the ...

Systems for acid digestion processes

A system for recovering rare earth elements from coal ash includes a leaching reactor, an ash dryer downstream of the leaching reactor, and a roaster downstream of the ash dryer that is cooperatively connected to both the leaching reactor and the ash dryer. Coal ash is mixed with an acid stream such that rare earth elements present in the coal ash are dissolved in the acid stream, thereby creating (i) a leachate containing the rare earth elements and (ii) leached ash. The leachate is heated to obtain acid vapor and an acid-soluble rare earth concentrate. Mixing of the coal ash with the acid stream can occur in a leaching reactor and heating of the leachate can occur in a roaster. The acid-soluble rare earth concentrate can be fed to a hydrometallurgical process to separate and purify the rare earth elements.

RECOVERING METAL OXIDES FORM A PAINT SLUDGE

A method for recovering metal oxides from a paint sludge. The method may include obtaining a first mixture by evaporating an organic part of the paint sludge. Evaporating the organic part of the paint sludge may include heating the paint sludge in a furnace. The method may further include precipitating a second mixture from the first mixture by mixing the first mixture and a sodium hydroxide solution. The method may further include recovering titanium dioxide from the second mixture by mixing the second mixture with a hydrochloric acid solution. 1. A method for recovering metal oxides from a paint sludge , the method comprising:obtaining a first mixture by evaporating an organic part of the paint sludge by heating the paint sludge in a furnace at a temperature in a range from 350° C. to 600° C.;precipitating a second mixture in the first mixture by mixing the first mixture and a sodium hydroxide solution with a weight ratio in a range from 1:5 to 1:15 (the first mixture:the sodium hydroxide solution);obtaining a supernatant solution by separating the precipitated second mixture from the first mixture;recovering titanium dioxide from the separated precipitated second mixture by mixing the separated precipitated second mixture with a hydrochloric acid solution with a weight ratio in a range from 1:5 to 1:15 (separated precipitated second mixture:hydrochloric acid solution);{'sub': '2', 'precipitating aluminum hydroxide from the supernatant solution by injecting COinto the supernatant solution; and'}forming aluminum oxide by heating the precipitated aluminum hydroxide at a temperature in a range from 1000° C. to 1200° C.2. A method for recovering metal oxides from a paint sludge , the method comprising:obtaining a first mixture by evaporating an organic part of the paint sludge by heating the paint sludge in a furnace;precipitating a second mixture from the first mixture by mixing the first mixture and a sodium hydroxide solution; andrecovering titanium dioxide from ...

Method and system for estimating waste metal batch composition

Described herein is a method for recycling aluminum alloy wheels. The method includes the steps of providing a feed of aluminum alloy wheels of a particular alloy; fragmenting a quantity of the aluminum alloy wheels into a plurality of fragments; subjecting the plurality of fragments to shot blasting to remove surface impurities from the plurality of fragments to produce a plurality of shot blasted pieces; separating the plurality of shot blasted pieces into a plurality of larger shot blasted pieces and a plurality of smaller shot blasted pieces; and, estimating a composition of the plurality of larger shot blasted pieces by selecting multiple shot blasted pieces from the plurality of smaller shot blasted pieces and then measuring the composition of the multiple shot blasted pieces.

Processes for treating fly ashes

There are provided processes for treating fly ash. For example, the processes can comprise leaching fly ash with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating the solid from the leachate; reacting the leachate with HCl so as to obtain a liquid and a precipitate comprising the aluminum ions in the form of AlCl 3 , and separating the precipitate from the liquid; and heating the precipitate under conditions effective for converting AlCl 3 into Al 2 O 3 and optionally recovering gaseous HCl so-produced.

Systems and methods for regeneration of aqueous alkaline solution

This invention is directed to regeneration of solutions comprising metal ions, and production of valuable hydroxide compounds. Specifically, the invention is related to regeneration of spent electrolyte solutions comprising metal ions (e.g. Al ions), such as electrolyte solutions used in metal/air batteries. The invention is further related to production of layered double hydroxides, and, optionally aluminum tri-hydroxide from aluminate.

METHOD FOR RECYCLING LITHIUM BATTERIES

The invention relates to a method for recycling used lithium batteries containing the steps: (a) digestion of comminuted material (), which contains comminuted components of electrodes of lithium batteries, using concentrated sulphuric acid () at a digestion temperature (T) of at least 100° C., in particular at least 140° C., so that waste gas () and a digestion material () are produced, (b) discharge of the waste gas () and (c) wet chemical extraction of at least one metallic component of the digestion material (). 1. A method for recycling lithium batteries containing:{'sub': 'A', 'digesting comminuted material which contains comminuted components of electrodes of lithium batteries, using concentrated sulphuric acid at a digestion temperature Tof at least 100° C., so that waste gas and a digestion material are produced,'}discharging of the waste gas, andperforming wet chemical extraction of at least one metallic component of the digestion material.2. The method according to claim 1 , whereinthe digestion is conducted in such a way that fluoride components in the comminuted material pass into the waste gas as hydrogen fluoride.3. The method according to wherein digesting is conducted until a concentration of water-soluble fluoride in the digestion material is lower than 100 mg/kg.4. The method according to wherein the concentrated sulphuric acid is utilised at least stoichiometrically during digestion.5. The method according to further comprising separating hydrogen fluoride from the waste gas.6. The method according to claim 1 , further comprising:leaching of the digestion material, andseparating graphite from the digestion material, thereby producing a raw fluid.7. The method according to claim 6 , further comprising separatingcopper from the raw fluid so that a de-copperised raw fluid is obtained.8. The method according to claim 1 , further comprising:{'sup': 2+', '3+, 'oxidizing Fe ions in the de-copperised raw fluid to Fe ions, and'}precipitating of iron and/ ...

Process For Extracting Values from Lithium Slag

A process for extracting values from lithium slag comprising: (a) hydrothermally treating lithium slag with an aqueous solution of an alkaline compound at selected temperature and duration; (b) performing an ion exchange step on the alkaline treated lithium slag; and (c) recovering values selected from the group consisting of aluminium compounds, silicon compounds and compounds containing silicon and aluminium.

Aluminum recovery method

A process for the recovery of aluminum, or recycling process, is described, which is based on separating the aluminum contained in aseptic carton packs (1), flexible packs (2) and residual aluminum alloy powder (3) used in manufacturing additive, through the selective dissolution of aluminum in a solution known as Bayer liquor and/or caustic soda, with sodium aluminate (liquid) and hydrogen gas (H 2 , gaseous) products. Both products can be used in an alumina refinery, the sodium aluminate is used for the production of aluminum hydroxide and the hydrogen can be used as fuel for boilers, furnaces or similar.

PROCESSES FOR TREATING FLY ASHES

There are provided processes for treating fly ash. For example, the processes can comprise leaching fly ash with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating the solid from the leachate; reacting the leachate with HCl so as to obtain a liquid and a precipitate comprising the aluminum ions in the form of AlCl, and separating the precipitate from the liquid; and heating the precipitate under conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced. 1289-. (canceled)290. A process for treating raw fly ash , said process comprising:optionally a pre-leaching treatment that consists of reducing the particle size of said raw fly ash;leaching said raw fly ash with HCl so as to obtain a leachate comprising aluminum ions and iron ions and a solid, and separating said solid from said leachate;{'sub': '3', 'reacting said leachate with HCl so as to obtain a liquid comprising iron ions and a precipitate comprising said aluminum ions in the form of AlCl, and separating said precipitate from said liquid; and'}{'sub': 3', '2', '3, 'heating said precipitate under conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced.'}291. The process of claim 290 , wherein said fly ash is leached with HCl having a concentration of about 25 to about 45 weight %.292. The process of claim 290 , wherein said fly ash is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 125 to about 225° C.293. The process of claim 290 , wherein said fly ash is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 160 to about 190° C.294. The process of claim 290 , wherein said fly ash is leached with HCl having a concentration of about 18 to about 45 weight %.295. The process of claim 290 , wherein said fly ash is leached with HCl having a concentration of about 18 to about 45 weight % at a temperature of ...

Process, apparatus, and system for recovering materials from batteries

An apparatus for carrying out size reduction of battery materials under immersion conditions can include a housing configured to hold an immersion liquid comprising at least one of sodium hydroxide and calcium hydroxide. A first feed chute may define an opening therein for receiving battery materials of a first type into the housing and a first submergible comminuting device may be disposed within the housing and submerged in the immersion liquid to receive the battery materials of the first type from the first feed chute. The first submergible comminuting device may be configured to cause a size reduction of the battery materials of the first type to form a first reduced-size battery material.

Process, apparatus, and system for recovering materials from batteries

An apparatus for carrying out size reduction of battery materials under immersion conditions can include a housing configured to hold an immersion liquid comprising at least one of sodium hydroxide and calcium hydroxide. A first feed chute may define an opening therein for receiving battery materials of a first type into the housing and a first submergible comminuting device may be disposed within the housing and submerged in the immersion liquid to receive the battery materials of the first type from the first feed chute. The first submergible comminuting device may be configured to cause a size reduction of the battery materials of the first type to form a first reduced-size battery material.

METHOD FOR THE TREATMENT OF ALUMINIUM SLAGS TREATMENT AND ASSOCIATED PLANT

Method for the secondary fusion aluminum slags treatment to obtain finished goods for agricultural, domestic and industrial use includes treating aluminous material with concentrated sulfuric acid to obtain aluminum sulfate, wherein the aluminous material comes from slags fed in lots of finite-dimension in a treatment plant of aluminum slags and includes aluminum oxides present in at least 30% by weight, the method includes: a) a first step of separating the metals present in the slags, by known methodologies, to obtain powders of metals as Fe, Cu, Zn, Ni and to obtain an aluminous component in the form of aluminum grains; b) a subsequent step of treating the aluminous component, with sulfuric acid to obtain aluminum sulfate in solution and/or in form of crystals; c) a subsequent step of obtaining a solid residual portion, derived from step b), apt to be used as a refractory material in applications with thermal character. 1. Method for the secondary fusion aluminum slags treatment for obtaining finished goods intended for agricultural , domestic and industrial use comprising the treatment of the aluminous material with concentrated sulfuric acid for obtaining aluminum sulfate , wherein the aluminous material , comes from slags fed in lots of finite-dimension in a plant of aluminum slags treatment and comprises aluminum oxides present for at least 30% in weight , the method comprising:a) a first step of separation of the metals present in the slags, with known methodologies, for obtaining powders of metals like Fe, Cu, Zn, Ni and for obtaining an aluminous component in form of aluminum grains;b) a following step of treatment of the aluminous component, with sulfuric acid for obtaining aluminum sulfate in solution and/or in form of crystals;c) a following step of obtainment of a solid residual portion, obtained from the preceding step of treatment of said aluminous component, apt to be used as refractory material in applications with thermal character.2. Method for ...

DROSS MANAGEMENT SYSTEM AND METHOD

A dross processing assembly includes a stirring station at which dross in a first dross recovery vessel is stirred and a pressing station at which previously stirred dross in a second dross recovery vessel is pressed simultaneously with the stirring of the dross in the first dross recovery vessel. The stirring station and the pressing station may be commonly housed in an enclosure. A conveyor system may advance dross recovery vessels through the dross processing assembly for continuous dross processing. 110-. (canceled)11. A method of recovering aluminum from dross , the method comprising:conveying in a dross processing assembly a first dross pan comprising stirred dross to a pressing station;wherein the dross in the first dross pan was stirred at a stirring station;positioning a second dross pan comprising dross at the stirring station; andsimultaneously stirring the dross in the second dross pan at the stirring station and pressing the dross in the first dross pan at the pressing station.12. The method of claim 11 , wherein the conveying and the positioning are carried out simultaneously.13. The method of claim 11 , wherein the conveying and the positioning are carried out sequentially.14. The method of claim 11 , wherein the positioning further comprises conveying the second dross pan from a staging area to the stirring station.15. The method of claim 14 , wherein an automation performs at least a portion of the stirring of the dross in the second dross pan claim 14 , at least a portion of the pressing of the dross in the first dross pan claim 14 , and at least a portion of the conveying of the dross pans.16. The method of claim 15 ,wherein a first door is between the staging area and the stirring station and a second door is between the pressing station and a retrieval area, andwherein the automation operates the first door and the second door in coordination with the stirring, pressing and conveying.17. The method of claim 11 , wherein the first dross pan is in ...

METHOD AND INDUSTRIAL PROCESS FOR RECOVERING RAW MATERIALS FROM PAPER-CONTAINING WASTES BY MEANS OF IONIC LIQUIDS

2.1 At present, actual recovery of the materials in their original form from wastes such as, for example, used paper, material mixtures, composite packaging, etc. is possible only to a limited degree, if at all. The cellulose in particular is currently hardly recovered at all from paper wastes as primary material. The present invention provides a homogeneous method in which all three main components, for example of composite packaging or mixtures of composite packaging materials, specifically cellulose, plastic and metal, can be recovered in their primary form and in a quality corresponding very substantially to new material. 2.2 According to the invention, this is accomplished in a solvent-based process. This involves using a suitable ionic liquid for leaching the cellulose out of the paper component of the waste, and this step is combined with other solvent-based steps so as to give rise to a homogeneous process in which both cellulose and plastic and metal can be recovered. In the method, the plastic is likewise leached out of the waste, but with conventional solvents such as hydrocarbons. The metal is removed in solid form. According to the composition of the raw material, the process may afford only one of the abovementioned materials, two or all three. 2.3 Such a method can be used for industrial scale recovery of the abovementioned materials. 1. Method and industrial process for the recovery of various raw materials from paper-containing wastes in a homogeneous procedure , characterized in that the cellulose is initially dissolved using ionic liquids and then recovered by precipitation.2. The method and industrial process according to claim 1 , characterized in that some of the plastics from the raw material are also obtained by a solvent-based process.3. The method and industrial process according to claim 1 , characterized in that the ionic liquid used claim 1 , which is used to dissolve the cellulose is a compound of the ABtype which contains as cation an ...

PROCESS AND ITS PRODUCTS FOR SPENT LITHIUM-ION BATTERIES TREATMENT

This invention discloses a process and its products for spent lithium-ion batteries treatment, which relates to the field of spent battery treatment technology. This process comprises: fully discharging spent lithium-ion batteries to obtain discharged spent lithium-ion batteries; crushing spent lithium-ion batteries to obtain crushed products of spent lithium-ion batteries; screening crushed products of spent lithium-ion batteries by screens to obtain an overflow and an underflow; sorting the overflow to obtain separator products, plastic products, iron products, copper foil products and aluminum foil products; mechanochemically activating the underflow to obtain activated products; acid leaching the activated products by degradable organic acid to obtain a mixture containing activated products and the organic acid leaching solution; filtering the mixture which contains the activated products and the organic acid leaching solution to obtain graphite as filter residues. Copper mud products and LiNiCoAlOcan be obtained after further treatments. This process can effectively recover recyclable resources in spent lithium-ion batteries, and reduce pollution of heavy metals. 1. A process of spent lithium-ion batteries treatment , wherein features comprise:fully discharging spent lithium-ion batteries to obtain discharged spent lithium-ion batteries;crushing said spent lithium-ion batteries to obtain said crushed products of spent lithium-ion batteries;screening said crushed products of spent lithium-ion batteries by screens to obtain an overflow and an underflow;sorting said overflow to obtain separator products, plastic products, iron products, copper foil products and aluminum foil products;mechanochemically activating said underflow to obtain activated products;acid leaching said activated products by degradable organic acid to obtain a mixture containing activated products and the organic acid leaching solution;filtering the mixture which contains the activated ...

METHOD FOR TREATING LITHIUM ION BATTERY

The present invention provides a method for treating at least one lithium ion battery enclosed in a housing containing aluminum, comprising heating the lithium ion battery using a combustion furnace in which a combustion object is incinerated by flames, while preventing the flames from being directly applied to the housing of the lithium ion battery. 1. A method for treating at least one lithium ion battery enclosed in a housing containing aluminum , comprising:heating the lithium ion battery using a combustion furnace in which a combustion object is incinerated by flames, while preventing the flames from being directly applied to the housing of the lithium ion battery.2. The method for treating the lithium ion battery according to claim 1 , wherein a temperature of the lithium ion battery in the combustion furnace is increased in an air atmosphere.3. The method for treating the lithium ion battery according to claim 1 , wherein in the combustion furnace claim 1 , the lithium ion battery is disposed in a battery protection container for preventing the flames from being directly applied to the housing of the lithium ion battery claim 1 , and the flames are applied to an outer surface of the battery protection container.4. The method for treating the lithium ion battery according to claim 3 , wherein the battery protection container has at least one gas venting hole for discharging a gas flowing out from the inside of the housing of the lithium ion battery to the outside of the battery protection container.5. The method for treating the lithium ion battery according to claim 3 , wherein in the battery protection container claim 3 , a filling material is arranged together with the lithium ion battery.6. The method for treating the lithium ion battery according to claim 5 , wherein the filling material is in the form of powder.7. The method for treating the lithium ion battery according to claim 6 , wherein the powder is alumina powder.8. The method for treating the ...

METHOD OF RECOVERING VALUES FROM ALUMINIUM DROSS

The invention concerns a Method of recovering values from aluminum dross comprising the steps of: a1) dissolving the aluminum dross in water thereby forming a salt solution, NHcontaining gas, and solid residues; b1) separating the NHcontaining gas; and c1) reacting the NHcontaining gas with COin COcontaining water saturated to at least 20% of maximum COsaturation to form ammonium carbonate and/or ammonium bicarbonate. According to another embodiment, the method comprises the steps of: a2) dissolving the aluminum dross in COcontaining water saturated to at least 20% of maximum COsaturation, thereby forming a salt solution, and solid residues; and b2) separating the solid residues from the salt solution. 1. Method of recovering values from aluminum dross comprising the steps of:a1) dissolving the aluminum dross in water thereby forming a salt solution, NH3 containing gas, and solid residues;{'sub': '3', 'b1) separating the NHcontaining gas; and'}{'sub': 3', '2', '2', '2, 'c1) reacting the NHcontaining gas with COin COcontaining water saturated to at least 20% of maximum COsaturation to form ammonium carbonate and/or ammonium bicarbonate.'}2. The method according to wherein the method additionally comprises one ore more of the following steps:d1) separating solid residues from the salt solution;e1) evaporating water from the salt solution and reclaiming the salt components, and;f1) forming aluminum oxynitride from the solid residues such as silicon aluminum oxynitride ands/or magnesium silicon aluminum oxynitride.316-. (canceled)17. The method according to claim 1 , wherein in step c1) the COcontaining water is saturated to at least 40% of maximum COsaturation.18. The method according to claim 1 , wherein in step c1) the COcontaining water is saturated to at least 60% of maximum COsaturation.19. The method according to claim 1 , wherein in step c1) the COcontaining water is saturated to at least 80% of maximum COsaturation.20. The method according to claim 1 , wherein ...

PREPARATION OF RARE EARTH METALS AND OTHER CHEMICALS FROM INDUSTRIAL WASTE COAL ASH

A process disclosed herein is related to the isolation and purification of substantially pure chemicals, including silica gel, sodium silicate, aluminum silicate, iron oxide, and rare earth elements (or rare earth metals, REEs), from massive industrial waste coal ash. In one embodiment, the process includes a plurality of caustic extractions of coal ash at an elevated temperature, followed by an acidic treatment to dissolve aluminum silicate and REEs. The dissolved aluminum silicate is precipitated out by pH adjustment as a solid product while REEs remain in the solution. REEs are captured and enriched using an ion exchange column. Alternatively, the solution containing aluminum silicate and REEs is heated to produce silica gel, which is easily separated from the enriched REEs solution. REEs are then isolated and purified from the enriched solution to afford substantially pure individual REE by a ligand-assisted chromatography. Additionally, a simplified process using one caustic extraction and one acidic extraction with an ion exchange process was also investigated and optimized to afford a comparable efficiency. 1. A process for preparing substantially pure chemicals from coal ash , the process comprising:a. extracting coal ash with a first caustic solution at an elevated temperature;b. separating undissolved solid residue from said first caustic extracting solution, wherein said first caustic solution is stored for later processing and said solid residue is washed briefly with water;c. treating the water washed solid residue with a first acid, wherein pH of the resulting acidic solution is maintained at about 3 and then the leftover solid is separated and washed with water;d. extracting the water washed solid with a second caustic solution at an elevated temperature;e. separating undissolved solid residue from the second caustic extracting solution and washing briefly with water;f. treating the undissolved solid with a second acid to bring the pH of the resulting ...

METHOD FOR RECYCLING SCRAP OF 2XXX OR 7XXX SERIES ALLOY

The invention relates to a method of manufacturing an aluminum alloy ingot using scrap aluminum alloy in the 2xxx or 7xxx series wherein 1. Method of manufacturing an aluminum alloy ingot using scrap aluminum alloy in the 2xxx or 7xxx series wherein(i) scrap aluminum alloy in the 2xxx or 7xxx series is procured;(ii) optionally, oil present on the scrap is separated,(iii) a first treatment operation of said scrap is made by a first liquid at a temperature of at least 10° C., said first liquid being an aqueous solution with pH equal to 1 to 5 or 8 to 13,(iv) the first liquid and the scrap thus treated are separated,(v) at least one second treatment operation of said scrap by a second liquid is made,(vi) the second liquid and the scrap thus treated are separated,(vii) said scrap thus obtained is melted,(viii) optionally, a first solidification is made in a rough intermediate form,(ix) an aluminum alloy ingot in the series of scrap used is cast.2. Method according to claim 1 , wherein the pH of said first liquid is between 2 and 4.3. Method according to claim 1 , wherein said first liquid contains phosphoric acid.4. Method according to claim 1 , wherein said first liquid contains at least one non-ionic surfactant.5. Method according to claim 4 , wherein said non-ionic surfactant is chosen from among a product with an ester bond claim 4 , a product with an ether bond and/or a product with an amide bond.6. Method according to claim 1 , wherein an ultrasound treatment is applied during said first treatment operation and/or during said second treatment operation claim 1 , at a frequency optionally between 10 kHz and 100 kHz optionally between 15 kHz and 35 kHz.7. Method according to claim 1 , wherein claim 1 , after a last treatment operation of said scrap by a last liquid claim 1 , the last treatment liquid and the scrap are separated such that a residual quantity of liquid does not exceed 3% by weight and/or the scrap is dried by heat treatment in a furnace at a ...

PROCESSING METHODS AND PROCESSING APPARATUS

A method and apparatus for processing a material are provided, the material being the upper layer from a metal melting process, the material containing one or more salts, the material containing one or more metals, the salts and/or metals being recycled as a result of the method/apparatus. The method includes feeding the material to a leaching step; obtaining a leachate from the leaching step; feeding the leachate to a drying step or spray drying step; obtaining a solid from the drying step or spray drying step. Off gases from the leaching step are used to provide heat to the drying step. The drying step provides a product well suited to being turned into pellets for reuse. 2. A method according to claim 1 , in which the metal melting processing step generates an off gas stream and that off gas stream is provided to the off gas stream processing.3. A method according to claim 2 , in which the metal melting processing step also generates an aluminium product stream and a slag stream.4. A method according to claim 1 , in which the leaching step provides one or more outlet streams including an off gas stream and that off gas stream is provided to the off gas stream processing.5. A method according to claim 4 , in which the off gas stream is combusted in the off gas stream processing claim 4 , with heat and/or power generated by being combusted being used in the drying step or spray drying step.6. A method according to claim 4 , in which the off gas stream is fed to a combined heat and power unit where it is burnt to provide power and heat to the process of the method.7. A method according to claim 4 , in which the off gas stream is fed to a combined heat and power unit where it is burnt to provide power and heat to the dryer step or spray drying step.8. A method according to claim 4 , in which the off gas stream includes hydrogen claim 4 , methane and ammonia.9. A method according to claim 8 , in which the off gas stream also includes phosphine and hydrogen sulphide.10 ...

Selective Extraction of Metals From Complex Inorganic Sources

Compositions and methods are provided that permit both recovery of at least two metals from industrial waste materials and control of the degree of relative recovery between the two metals. Industrial waste is initially treated with an acid and mixed for a defined period of time, and the extracted metals recovered from the resulting supernatant in subsequent steps. Surprisingly, the duration of this initial stirring period has been found to impact the relative degree of recovery of the two metals in a non-linear fashion. 112-. (canceled)13. A method of controlling distribution of metal recovery from a complex inorganic source between a first metal and a second metal , comprising:contacting the complex inorganic source comprising the first metal and the second metal with an acid to form a first suspension;mixing the first suspension for a period of time;upon completion of the period of time, separating the first suspension into a first filtrate and a first solid residue, wherein the first filtrate comprises the first metal and the second metal;contacting the first filtrate with a first precipitating agent to form a second suspension;separating the second suspension into a second filtrate and a second solid residue, wherein the second solid residue comprises a portion of the first metal;contacting the second filtrate with a second precipitating agent to form a third suspension; andseparating the third suspension into a third filtrate and a third solid residue comprising a portion of the second metal,wherein the period of time is selected to provide a desired recovery distribution between the first metal and the second metal, andwherein the first precipitating agent is selected from the group consisting of an organic acid, oxalic acid, an organic amine, ethanolamine, an ethanolamine salt, ammonia, and an ammonium salt, and wherein the second solid residue comprises an alumina-containing gel.14. The method of claim 13 , wherein the first metal is aluminum and the second ...

PROCESSES FOR PREPARING ALUMINA AND MAGNESIUM CHLORIDE BY HCl LEACHING OF VARIOUS MATERIALS

The disclosed processes can be effective for treating various materials comprising several different metals. These materials can be leached with HCl for obtaining a leachate and a solid. Then, they can be separated from one another and a first metal can be isolated from the leachate. Then, a second metal can further be isolated from the leachate. The first and second metals can each be substantially selectively isolated from the leachate. This can be done by controlling the temperature of the leachate, adjusting pH, further reacting the leachate with HCl, etc. The metals that can be recovered in the form of metal chlorides can eventually be converted into the corresponding metal oxides, thereby allowing for recovering HCl. The various metals can be chosen from aluminum, iron, zinc, copper, gold, silver, molybdenum, cobalt, magnesium, lithium, manganese, nickel, palladium, platinum, thorium, phosphorus, uranium, titanium, rare earth element and rare metals. 1429-. (canceled)432. The process of claim 430 , wherein said process is carried out without reacting said precipitate with said base.433. The process of claim 431 , wherein said process is carried out without reacting said precipitate with said base.434. The process of claim 430 , wherein said process is carried out by reacting said precipitate with said base.435. The process of claim 431 , wherein said process is carried out by reacting said precipitate with said base.436. The process of claim 430 , wherein said aluminum-containing material is leached with HCl having a concentration of about 25 to about 45 weight %.437. The process of claim 430 , wherein said aluminum-containing material is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 160 to about 190° C.438. The process of claim 430 , wherein said aluminum-containing material is leached with HCl having a concentration of about 18 to about 32 weight % at a temperature of about 160 to about 175° C.439. The ...

Method for Recovering Aluminum from Multilayered Packaging Utilizing Sonication and Formic Acid

The process disclosed herein is method of recovering aluminum from multilayered packaging. The process comprises subjecting multilayered packaging to a reactor with aqueous formic acid, wherein the solution is sonicated using sonic horns. This process allows the recovery of aluminum in its pure metal form. PP/PE components of the multilayered packaging are recovered utilizing density separation, while ink and PET components require further treatment in a toluene reactor which may include sonication. 1. A method of recovering aluminum from multilayered packaging comprising:shredding multilayered packaging with a mechanical shredder until the multilayered packaging is reduced to small fragments,subjecting the small fragments to an aqueous solution of formic acid, wherein the aqueous solution is maintained at a minimum temperature of 25 degrees Celsius and a maximum temperature of 75 degrees Celsius,subjecting the aqueous solution of formic acid containing the small fragments to sonication until aluminum separates from the small fragments as pure aluminum metal, andfiltering the pure aluminum metal from the aqueous solution of formic acid utilizing density separation.2. The method of wherein a sonic horn producing sonic waves at 250 watts provides the sonication.3. The method of wherein the small fragments have a maximum width of 1 cm and a maximum length of 2 cm.4. A method of recovering polypropylene or polyethylene from multilayered packaging comprising:shredding multilayered packaging with a mechanical shredder until the multilayered packaging is reduced to small fragments,subjecting the small fragments to an aqueous solution of formic acid, wherein the aqueous solution is maintained at a minimum temperature of 25 degrees Celsius and a maximum temperature of 75 degrees Celsius,subjecting the aqueous solution of formic acid containing the small fragments to sonication until aluminum separates from the small fragments as pure aluminum metal, andfiltering the ...

Recovery of critical metals from sx-ew copper raffinate and other solutions derived from leaching ores with sulfuric acid

A method for extracting secondary metal values from a sulfuric acid leachate is provided. The method includes providing a leachate which contains a primary metal and a plurality of secondary metals, wherein the primary metal is selected from the group consisting of Cu, Li and Ni and is derived from sulfuric acid leaching of an ore; passing the leachate through a first ion exchange resin which is selective to, and releasably binds, the plurality of secondary metals; stripping the plurality of secondary metals from the second or third ion exchange resins, thereby obtaining a first extract; and recovering the secondary metals from the first extract. In some embodiments, prior to passing the leachate through the first ion exchange resin, the leachate is passed through a second ion exchange resin which is selective to, and releasably binds, one of the plurality of secondary metals. The one of the secondary metals is then stripped from the second exchange resin, thereby obtaining a second extract, and the one of the secondary metals is recovered from the second extract.

PROCESSES FOR TREATING MAGNESIUM-CONTAINING MATERIALS

The disclosed processes can be effective for treating various materials comprising several different metals. These materials can be leached with HCl for obtaining a leachate and a solid. Then, they can be separated from one another and a first metal can be isolated from the leachate. Then, a second metal can further be isolated from the leachate. The first and second metals can each be substantially selectively isolated from the leachate. This can be done by controlling the temperature of the leachate, adjusting pH, further reacting the leachate with HCl, etc. The metals that can be recovered in the form of metal chlorides can eventually be converted into the corresponding metal oxides, thereby allowing for recovering HCl. The various metals can be chosen from aluminum, iron, zinc, copper, gold, silver, molybdenum, cobalt, magnesium, lithium, manganese, nickel, palladium, platinum, thorium, phosphorus, uranium, titanium, rare earth element and rare metals. 1. A process for treating a magnesium-containing material , said process comprising:leaching the magnesium-containing material with HCl so as to obtain a leachate comprising magnesium ions and ions from at least one metal and a solid, and separating said solid from said leachate; andprecipitating said at least one metal by reacting said leachate with a precipitating agent so as to obtain a liquid comprising said magnesium ions and a precipitate comprising said precipitated at least one metal, and separating said precipitate from said liquid.2. The process of claim 1 , wherein said process comprises substantially selectively precipitating said magnesium ions by reacting said liquid with said precipitating agent.3. The process of claim 1 , wherein said precipitating agent is a base.4. The process of claim 2 , wherein said precipitating agent is Mg(OH).5. The process of claim 1 , wherein said magnesium-containing material is serpentine.6. The process of claim 1 , wherein said magnesium-containing material is asbestos ...

IMPROVEMENTS IN AND RELATING TO PROCESSING METHODS AND PROCESSING APPARATUS

A method and apparatus for processing a material are provided, the material being the upper layer from a metal melting process, the material containing one or more salts, the material containing one or more metals, the salts and/or metals being recycled as a result of the method/apparatus. The method includes feeding the material to a leaching step; obtaining a leachate from the leaching step; feeding the leachate to a drying step or spray drying step; obtaining a solid from the drying step or spray drying step. Off gases from the leaching step are used to provide heat to the drying step. The drying step provides a product well suited to being turned into pellets for reuse. 1. A method of processing a material , the material being the upper layer from a metal melting process , the material containing one or more salts , the material containing one or more metals , the method including:a) feeding the material to a leaching step;b) obtaining a leachate from the leaching step;c) feeding the leachate to a drying step or spray drying step;d) obtaining a solid from the drying step or spray drying step.2. An apparatus for processing a material , the material being the upper layer from a metal melting process , the material containing one or more salts , the material containing one or more metals , the apparatus including:a) leaching apparatus;b) a feeder providing material to the leaching apparatus;c) an outlet for leachate from the leaching apparatus;d) a dryer or spray dryer;e) the outlet being fluidly connected to the spay dryer;f) an outlet from the dryer or spray dryer for solids.3. A method according to in which the leaching step further comprises one or more other outlet streams claim 1 , including an off gas stream claim 1 , the off gas stream being further processed with heat and/or power generated by combustion being used in the drying step or spray drying step.4. A method according to further comprising a step for feeding hot gas to the drying step or spray ...

Method for treating tailings pond liquor

A treatment process for processing raw liquor obtained from a tailings pond containing residue from an alumina production facility is disclosed where the raw liquor is first contacted with a gas containing carbon dioxide (CO 2 ) to neutralize the raw liquor and to precipitate aluminum hydroxide Al(OH) 3 . The aluminum hydroxide is separated from the neutralized liquor, which is rich in bicarbonates and then concentrated using membrane separation technology to form a NaHCO 3 (sodium bicarbonate) rich retentate. This NaHCO 3 rich retentate is then subjected to a regeneration process to recover NaOH for recycle to the alumina production facility.

Processes for treating red mud

There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO 2 , SiO 2 etc.

METHODS FOR PURIFYING ALUMINIUM IONS

There are provided processes for purifying aluminum ions. Such processes comprise precipitating the aluminum ions under the form of Al(OH)at a first pH range; converting Al(OH)into AlClby reacting Al(OH)with HCl and precipitating said AlCl; and heating the AlClunder conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced. The processes can also comprise converting alumina into aluminum. 1123-. (canceled)124. A process for purifying aluminum ions comprising:leaching an aluminum containing material chosen from an aluminum-containing ore, a recycled industrial aluminum-containing material, red mud, fly ashes, slag, alumina, aluminum hydroxide, aluminum chloride and aluminum metal with an acid so as to obtain a leachate comprising said aluminum ions and ions from at least one metal; and optionally a solid residue;optionally separating the leachate from the solid residue;{'sub': 3', '3, 'precipitating said aluminum ions from said leachate in the form of Al(OH)at a pH of about 7 to about 10 in order to obtain a solid comprising said Al(OH)and a liquid comprising said ions from said at least one metal;'}separating said solid from said liquid;{'sub': 3', '3', '3', '3, 'converting said Al(OH)into AlClby reacting Al(OH)with HCl and precipitating said AlCl;'}{'sub': '3', 'recovering said AlCl; and'}{'sub': 3', '3', '2', '3, 'heating said AlClunder conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced.'}125. The process of claim 124 , wherein said pH is about 9 to about 10.126. The process of claim 124 , wherein precipitation of said aluminum ions is carried out at a temperature of about 50 to about 75° C.127. The process of claim 124 , wherein precipitating said aluminum ions in the form of Al(OH)at a pH of about 7 to about 10 is carried out by reacting said aluminum ions with AlCl.128. The process of claim 124 , wherein a first precipitation of said aluminum ions in the form of Al(OH)is ...

PROCESSES FOR PREPARING ALUMINA AND VARIOUS OTHER PRODUCTS

There is provided a process for preparing alumina. The process comprise leaching an aluminum-containing material (for example an industrial waste product chosen from red mud, fly ashes and a mixture thereof), with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating the solid from the leachate. Then, the process comprises reacting the leachate with HCl so as to obtain a liquid and a precipitate comprising the aluminum ions in the form of AlCl, and separating the precipitate from the liquid. Then, the precipitate is reacted with a base. Finally, the process comprises heating the precipitate under conditions effective for converting the precipitate into AlO. 1. A process for preparing alumina , said process comprising:leaching an aluminum-containing material, that is an industrial waste product chosen from red mud, fly ashes and a mixture thereof, with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating said solid from said leachate;{'sub': '3', 'reacting said leachate with HCl so as to obtain a liquid and a precipitate comprising said aluminum ions in the form of AlCl, and separating said precipitate from said liquid;'}reacting the precipitate with a base; and{'sub': 2', '3, 'heating said precipitate under conditions effective for converting the precipitate into AlO.'}2. The process of claim 1 , wherein said aluminum-containing material is leached with HCl having a concentration of about 25 to about 45 weight %.3. The process of claim 1 , wherein said aluminum-containing material is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 125 to about 225° C.4. The process of claim 1 , wherein said aluminum-containing material is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 160 to about 190° C.5. The process of claim 1 , wherein said aluminum-containing material is leached with HCl having a concentration of ...

PROCESSES FOR TREATING RED MUD

There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO, SiOetc. 1357-. (canceled)358. A process for treating red mud , said process comprising:leaching red mud with HCl at a temperature of about 125 to about 225° C.: so as to obtain a leachate comprising aluminum ions and iron ions and a solid, and separating said solid from said leachate;{'sub': '3', 'reacting said leachate with HCl so as to obtain a liquid comprising said iron ions and a precipitate comprising said aluminum ions in the form of AlCl, and separating said precipitate from said liquid; and'}{'sub': 3', '2', '3, 'heating said precipitate under conditions effective for converting AlClinto AlOand optionally recovering gaseous HCl so-produced.'}359. The process of claim 358 , wherein said red mud is leached with HCl having a concentration of about 25 to about 45 weight %.360. The process of claim 358 , wherein said red mud is leached with HCl having a concentration of about 25 to about 45 weight % at pressure of about 50 to about 150 psig.361. The process of claim 358 , wherein said red mud is leached with HCl having a concentration of about 25 to about 45 weight % at a temperature of about 160 to about 190° C.362. The process of claim 358 , wherein said red mud is leached with HCl having a concentration of about 18 to about 45 weight % at a temperature of about 125 to about 225° C.363. The process of claim 358 , wherein said process further comprises recycling gaseous HCl so-produced by contacting it with water so as to obtain a composition having a concentration of about 25 to about 45 weight and using said composition for ...

DERIVING HIGH VALUE PRODUCTS FROM WASTE RED MUD

Disclosed herein, is a process for recovering- valuable metals and/or their oxides from red mud bauxite residues or similar. The process comprises: calcining a red mud residue having a pH of less than about 10 to provide a calcinated red mud residue; acid leaching the calcinated red mud residue to provide a silica rich solid component and an acid leachate; separating the silica rich solid component and the acid leachate; precipitating an iron rich solid component from the acid leachate; and separating the precipitated iron rich solid component from the acid leachate to provide an aluminium rich liquor. 1. A process for recovering valuable metals and/or their oxides from red mud bauxite residues or similar , the process comprising:a) calcining a red mud residue having a pH of less than about 10 to provide a calcinated red mud residue;b) acid leaching the calcinated red mud residue to provide a silica rich solid component and an acid leachate;c) separating the silica rich solid component and the acid leachate;d) precipitating an iron rich solid component from the acid leachate; ande) separating the precipitated iron rich solid component from the acid leachate to provide an aluminium rich liquor.2. The process of claim 1 , wherein the process further comprises recovering silica from the silica rich solid component.3. The process of claim 1 , wherein the process further comprises recovering iron oxides from the iron rich solid component.4. The process of claim 1 , wherein the process further comprises recovering alumina from the aluminium rich liquor.5. The process of claim 1 , further comprising a step of adjusting the pH of a red mud bauxite residue to pH 9 to 10 to provide a partially neutralised red mud residue.6. The process of claim 5 , wherein the red mud bauxite residue is washed with sea water.712-. (canceled)13. The process of claim 5 , wherein the partially neutralised red mud reside is calcinated at a temperature of 500° C.14. The process of claim 13 , ...

Method of extracting metal ions from red mud by sonication

A method of effectively extracting metal ions by sonication from red med that is waste remaining after extracting aluminum from bauxite. The method includes: (a) introducing, into a reactor placed in a constant-temperature tank, (1) a neutralized red mud slurry and an acidic solution or (2) red mud slurry, distilled water and an acidic solution, to form a red mud slurry, and heating the constant-temperature tank to allow the red mud slurry to react while sonicating the red mud slurry, thereby extracting metal ions from the red mud; and (b) filtering a product resulting from step (a) to provide a filtrate and a red mud residue, and separating and recovering the filtrate and the red mud residue, wherein the sonication in step (a) is performed using an ultrasonic generator by applying ultrasonic waves to an ultrasonic tip placed in the constant-temperature tank.

Novel Method for Extracting Ultra High Purity Alumina from Wastewater

An object of the present invention is to provide a novel method for extracting ultra high purity alumina from wastewater. Wastewater is recycled, filtered, concentrated and pretreated in order to mix with alkali solution and extraction agent PX-17, undergoing 2 times of purification, adding control agent SX-1 and high temperature heat treatment to finally obtain ultra high purity nano-alumina particles which purity reaches as 99.999% and particle size reaches as 20-200 nm. 1. A novel method for extracting ultra high purity nano-alumina from wastewater , characterized in that it comprises the following steps:{'sup': 3+', '3+, '(1) filter the raw material waste containing aluminum (Al) by Teflon mesh, and concentrate it to maintain aluminum ions (Al) mass fraction of 3%˜18%; Then, the concentrated solution is dropped into the alkaline solution while the alkali mass fraction reaches 10%˜60%.'}(2) add extraction agent PX-17 into mixed solution and stir, during extraction process, keep the pH value always at 1-9, maintain the temperature at 10° C.˜90° C.; add extraction agent PX-17 in the preliminary extraction for a secondary extraction, the initial dosage is 1˜5 g/L, and stirring time is 30 min˜5 h in the preliminary extraction; the second dosage is 0.1˜3 g/L, and stirring time is 0.5 h˜5 h in the secondary extraction.(3) add the control agent SX-1 into above extract solution and stir, dosage is 0.1˜5 g/L, stir for 1 h˜24 h at 20° C.˜280° C.; and add the alkali solution under the pH value as 1 to 10 to precipitate the aluminum hydroxide; then cooling, filtering and washing with ultra-pure water for 3˜5 times, drying under 80° C.˜120° C. to obtain pure aluminum hydroxide precursor.(4) heat the pure aluminum hydroxide precursor under 600° C.˜1200° C. for 0.5˜4 hours; then obtain the ultra high purity nano alumina by cooling down under a certain temperature.Wherein the waste water in step (1) contains the surface treatment waste liquid of various aluminum, aluminum plate, ...

PROCESS FOR REDUCING OF LEACHABLE FLUORIDES AND CONTROLLING PH OF ALUMINUM WASTE PRODUCTS

The present disclosure provides processes for recycling spent pot lining carbon by-products (SPLCB) obtained from a caustic leach process. The process provides treating spent pot lining (SPL) or SPLCB with Ca/P-containing stabilizing agents. 1. A process for treating spent pot lining carbon by-products (SPLCB) , said process comprising treating , during a caustic leach , a spent pot lining (SPL) with Ca/P-containing stabilizing agents and/or treating , during a wash , a SPLCB with Ca/P-containing stabilizing agents to obtain SPLCB residues.2. The process of claim 1 , wherein the ratio (w/w) between Ca/P-containing stabilizing agents and the initial weight of the SPL or the SPLCB is between about 0.2% w/w to about 20% w/w.3. The process of claim 1 , wherein the Ca/P-containing stabilizing agents comprises a calcium phosphate.4. The process of claim 3 , wherein the calcium phosphate is selected from the group consisting of Ca(PO) claim 3 , Ca(HPO) claim 3 , Ca(HPO) claim 3 , CaOP claim 3 , Ca(PO)OH claim 3 , Ca(HPO) claim 3 , Ca(PO) claim 3 , Ca(HPO) claim 3 , Ca(PO)OH) claim 3 , their hydrated forms and combinations thereof.5. The process of claim 1 , wherein the Ca/P-containing stabilizing agents comprises a lime and phosphoric acid.6. The process of claim 5 , wherein the lime is a milk of lime.7. The process of claim 1 , wherein at least one of the treatment step is conducted on a filter.8. The process of claim 7 , wherein the filter is a treatment filter or a washing filter.9. The process of claim 1 , wherein at least one of the treatment step is conduction in a reactor.10. The process of claim 9 , wherein the reactor is a treatment reactor or a washing reactor.11. The process of claim 1 , wherein the process excludes the use of a surfactant. This application claims priority on U.S. provisional patent application 61/740,589 filed on Dec. 21, 2012 and herewith incorporated in its entirety.The present disclosure relates to processes for obtaining aluminum waste ...

Process For Dissolving Aluminum For Recovering Nuclear Fuel

A process for controlling the dissolution of a metal in an acid bath is described. The metal may comprise aluminum and the acid bath may contain a metal catalyst that causes the metal to dissolve. In order to control the rate of dissolution and/or the amount of gas evolved during the process, an iron source is added to the bath. In one embodiment, the process can be used to dissolve aluminum contained in spent fuel assemblies for recovering a nuclear fuel, such as uranium. 1. A process for dissolving aluminum during the recovery of a nuclear fuel comprising:contacting a material containing aluminum and a nuclear fuel with an acid in the presence of a metal catalyst and an iron source, the acid and metal catalyst dissolving the aluminum, the iron source being present in an amount sufficient to decrease off-gas rate during dissolution.2. A process as defined in claim 1 , wherein the iron source is present in an amount sufficient to decrease hydrogen off-gas rate during dissolution.3. A process as defined in claim 1 , wherein the acid comprises nitric acid.4. A process as defined in claim 3 , wherein the material is initially contacted with nitric acid at a concentration of from about 4 molar to about 15 molar.5. A process as defined in claim 3 , wherein the material is initially contacted with nitric acid at a concentration of from about 5 molar to about 8 molar.6. A process as defined in claim 1 , wherein the iron source is present such that the molar ratio between iron and the catalyst is from about 3:1 to about 40:1.7. A process as defined in claim 1 , wherein the iron source is present such that the molar ratio between iron and the catalyst is from about 11:1 to about 20:1.8. A process as defined in claim 3 , wherein the nitric acid concentration after 95% of the aluminum has dissolved is no less than 0.5 molar.9. A process as defined in claim 2 , wherein the iron source is present in an amount sufficient to decrease the rate of hydrogen off-gas production by more ...

METHODS AND SYSTEMS FOR POLISHING AND RECOVERING ALUMINUM FROM A WASTE MATERIAL

A method includes one or more of the following five steps: (1) rough processing, (2) comminuting the material, (4) washing the material with acid, and (5) collecting/sorting the material to recover an aluminum product or a very pure aluminum product. A system may execute one or more of these steps to recover an aluminum product or a very pure aluminum product

METHOD FOR THE ACID TREATMENT OF RED MUD

The invention relates to the metallurgical industry, specifically to the acid treatment of red mud obtained in the process of producing alumina, and can be used in technologies for recycling waste from alumina refinery holding ponds. The method for the acid treatment of red mud involves leaching using a leaching agent comprised of water-soluable aliphatic carbonic acids having fewer than 3 carbon atoms per molecule, filtering the solution, and separating the recoverable end products. To ensure a high level of recovery of valuable components and the increased productivity of the process, leaching is conducted with the addition of red mud in portions and with the control of pH values, and when a target pH value of between 2.3 and 3.8 is reached, no more red mud is added, and once leaching is complete, the solution is kept at a given leaching temperature for no less than one hour. 1a. leaching the red mud using as the leaching agent water-soluble aliphatic carboxylic acids having fewer than 3 carbon atoms in the water-soluble aliphatic carboxylic acid molecule,b. filtering the solution from step a, and separating recoverable end products,wherein the leaching is carried out with a batch addition of the red mud with pH control, wherein when a target pH of 2.3-3.8 is reached, stopping the addition of red mud, and upon completion of the leaching, keeping the solution at a given leaching temperature at least for one hour.. A method for the acid treatment of red mud comprising; The invention relates to the metallurgical industry, namely, to the acid treatment of red mud produced during alumina production, and can be used in technologies for recycling waste from alumina refinery holding ponds.A method is known for treating red mud from alumina production by leaching with sulfuric acid to transfer valuable components into solution (RU, patent 2140998, C22B7/00, C22B59/00, published Nov. 10, 1999). The leaching is carried out with sulfuric acid at a concentration of 74-100 g/L ...

METHOD OF RECOVERING RARE EARTH ALUMINUM AND SILICON FROM RARE EARTH-CONTAINING ALUMINUM-SILICON SCRAPS

Disclosed is a method of recovering rare earth, aluminum and silicon from rare earth-containing aluminum-silicon scrap. The method comprises: S1, acid-leaching the rare earth-containing aluminum-silicon scrap with an inorganic acid aqueous solution to obtain a silicon-rich slag and acid leached solution containing rare earth and aluminum element; S2, adding an alkaline substance into the acid leached solution containing the rare earth and aluminum element and controlling a PH value of the acid leaching solution between 3.5 to 5.2, performing a solid-liquid separation to obtain a aluminum hydroxide-containing precipitate and a rare earth-containing solution filter; S3, reacting the aluminum hydroxide containing precipitate with sodium hydroxidee to obtain sodium metaaluminate solution and aluminum-silicon slag, and preparing a rare earth compound product with the rare earth-containing filtrate. The method dissolves an the aluminum and the rare earth with the acid and then via step wise alkaline conversion, convert aluminum icons to an aluminum hydroxide precipitate separated from rare earth ions, and then adds excessive amounts of sodium hydroxide to convert the aluminum hydroxide to a sodium metaaluminate solution, thereby realizing high-efficiency recovery of both rare earth and aluminum while significantly reducing the consumption of the sodium hydroxide and thus recovery cost. 1. A method of recovering rare earth , aluminum and silicon from a rare earth-containing aluminum silicon scrap , wherein the method comprises steps of:S1, acid-leaching the rare earth-containing aluminum silicon scrap with an inorganic acid aqueous solution, to obtain a silicon-rich slag and an acid leaching solution containing rare earth and aluminum elements;S2, adding an alkaline substance to the acid leaching solution containing rare earth and aluminum elements, controlling an end-point pH value of the acid leaching solution between 3.5 and 5.2 to obtain a slurry, and performing solid- ...

Method of separating metal from metallic starting materials using a hydrothermal reactor system

The presently disclosed subject matter is directed to a method of hydrothermally treating metallic packaging, metallic labeling material, and scrap metal items. Particularly, the disclosed method initially comprises providing a metallic starting material. The metallic starting material is introduced to a reactor and processed at elevated temperature and/or pressure for a desired amount of time. As a result, the metallic portion of the starting material separates into a distinct layer that can be removed from the remainder of the starting material.

Способы обработки летучей золы

Изобретение относится к способам обработки материалов промышленных отходов, а именно к способам обработки летучей золы. Способ включает выщелачивание летучей золы с использованием HCl с получением продукта выщелачивания, содержащего ионы алюминия, ионы железа и твердое вещество, и отделение указанного твердого вещества от продукта выщелачивания. Затем осуществляют реакцию продукта выщелачивания с HCl с получением жидкости, содержащей ионы железа, и осадка, содержащего ионы алюминия в форме AlCl 3 . Отделяют осадок от жидкости. Нагревают осадок в условиях, обеспечивающих превращение AlCl 3 в Al 2 O 3 , и необязательно извлекают образующийся при этом газообразный HCl. Обеспечивается экономичный способ получения чистого оксида алюминия с одновременным получением других продуктов высокой степени чистоты и высокого качества. 3 н. и 250 з.п. ф-лы, 7 ил., 38 табл., 10 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 633 579 C2 (51) МПК C01F 7/38 (2006.01) C01B 7/00 (2006.01) C22B 21/02 (2006.01) C22B 3/10 (2006.01) C22B 3/44 (2006.01) C22B 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА A62D 3/36 (2007.01) ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ A62D 3/40 (2007.01) (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014143431, 11.03.2013 (24) Дата начала отсчета срока действия патента: 11.03.2013 Дата регистрации: (72) Автор(ы): БОДРО Ришар (CA), ФУРНЬЕР Жоэль (CA), ПРИМО Дэнис (CA) Приоритет(ы): (30) Конвенционный приоритет: (56) Список документов, цитированных в отчете о поиске: CA 2797561 A1, 03.11.2011. US 4652433 A, 24.03.1987. CA 2240067 A1, 26.06.1997. SU 1258815 A1, 23.09.1986. RU 2424332 C2, 20.07.2011. (43) Дата публикации заявки: 20.05.2016 Бюл. № 14 (45) Опубликовано: 13.10.2017 Бюл. № 29 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.10.2014 (86) Заявка PCT: CA 2013/000218 (11.03.2013) 2 6 3 3 5 7 9 29.03.2012 US 61/617,422; 26.09.2012 US 61/706,028 R U (73) Патентообладатель(и): ОРБИТ АЛЮМИНЭ ИНК. (CA) 13.10.2017 2 6 3 3 5 7 9 R U WO 2013/142957 (03.10.2013) C 2 ...

渣滓管理系统和方法

一种渣滓处理组合件(14)，包括搅拌站(16)和挤压站(18)，在所述搅拌站(16)处对第一渣滓回收容器(27)中的渣滓进行搅拌，对所述第一渣滓回收容器中的渣滓进行搅拌的同时在所述挤压站(18)处对第二渣滓回收容器(27)中的由所述搅拌站之前搅拌过的渣滓进行挤压。搅拌站和挤压站可共同容纳在外壳(46)中。传送机系统(12)可以将多个渣滓回收容器推进通过所述渣滓处理组合件以进行连续渣滓处理。

Method for recycling scrap of 2xxx or 7xxx series alloys

본 발명은 2XXX 또는 7XXX 시리즈의 알루미늄 합금의 스크랩을 이용하여 알루미늄 합금 잉곳을 제조하는 알루미늄 합금 잉곳의 제조 방법으로서, (i) 2XXX 또는 7XXX 시리즈의 알루미늄 합금의 스크랩을 입수하고, (ii) 선택적으로, 스크랩 상에 존재하는 오일을 분리하며, (iii) pH 1~5 또는 pH 8~13의 수용액인, 적어도 10℃의 온도의 제1 액체에 의한 상기 스크랩의 제1 처리 공정을 실시하고, (iv) 상기 제1 액체와 상기 처리된 스크랩을 분리하며, (v) 제2 액체에 의한 상기 스크랩의 적어도 1회의 제2 처리 공정을 실시하고, (vi) 상기 제2 액체와 상기 처리된 스크랩을 분리하며, (vii) 상기 얻어진 스크랩을 용융시키고, (viii) 미가공 중간 형태로의 제1 응고화를 실시하며, (ix) 사용된 스크랩의 시리즈의 알루미늄 합금 잉곳을 주조하는 것인 알루미늄 합금 잉곳의 제조 방법에 관한 것이다. 또한, 본 발명은 상기 방법의 단계들 이외에, 상기 사용된 스크랩의 시리즈의 알루미늄 합금 잉곳을 압연, 압출 및/또는 단조하는 적어도 하나의 단계를 포함하여, 압연, 압출 및/또는 단조 후에 항공 구조 요소를 제조하는 방법에 관한 것이다. The present invention is a method for manufacturing an aluminum alloy ingot for manufacturing an aluminum alloy ingot using scrap of an aluminum alloy of 2XXX or 7XXX series, (i) obtaining scrap of an aluminum alloy of the 2XXX or 7XXX series, (ii) optionally , separating the oil present on the scrap, (iii) subjecting the scrap to a first treatment process with a first liquid at a temperature of at least 10° C., which is an aqueous solution of pH 1-5 or pH 8-13, ( iv) separating the first liquid and the treated scrap, (v) subjecting the scrap to at least one second treatment process with a second liquid, and (vi) separating the second liquid and the treated scrap. separating, (vii) melting the scrap obtained above, (viii) subjecting it to a first solidification to a raw intermediate form, and (ix) casting an aluminum alloy ingot of a series of spent scrap. It relates to a manufacturing method. The present invention also provides, in addition to the steps of the above method, at least one step of rolling, extruding and/or forging an aluminum alloy ingot of the series of used scrap, wherein after rolling, extruding and/or forging the aviation structural element It relates to a method of manufacturing.

一种处理含钛赤泥的方法

本发明涉及一种处理含钛赤泥的方法。所述方法包括：含钛赤泥经盐酸溶液浸出后，得到浸出渣和浸出液；其中，浸出渣的处理过程为：利用硫酸溶液对浸出渣进行进一步的浸出处理，并经水解、焙烧处理得到二氧化钛；浸出液的处理过程为：对浸出液进行蒸发焙烧处理，得到混合物，向混合物中加入还原剂和添加剂，并压块成型，得到生球，生球经还原、熔分处理，得到熔分铁和富铝渣。本发明能够实现钛、铁、铝的有效分离提取，并且提高了富铝渣提铝的经济价值，能耗较低，节约生产成本。

一种基于还原焙烧-酸浸粉煤灰资源化的方法

本发明涉及一种基于还原焙烧‑酸浸粉煤灰资源化的方法，其步骤包括：配矿、还原焙烧、碱浸、氧化焙烧、酸浸。其优点在于能高效地将铝硅矿物/固废资源化，提取出其中氧化硅、氧化铝及其他痕量金属。该方法中活化剂锰氧化物可被循环，与传统拜耳法及石灰/碳酸钠烧结浸出法相比，可实现活化剂二氧化锰闭路循环，减少污染与成本，且二氧化硅提取率高，后续酸法、浸出路线可同时回收其中痕量金属。

一种联动回收铝冶炼过程多种固废物料的方法

本发明公开一种联动回收铝冶炼过程多种固废物料的方法，具体充分利用铝灰、阴极灰和炭渣的成分特性，综合考虑铝冶炼过程多种固废料的联动回收，氟和铝有价元素回收率高(≥90％)、产品纯度高(主产品AlF 3 和Al 2 O 3 混料纯度≥98％)，可用于铝电解过程，整体技术利润附加值高、试剂消耗和能耗小，有利于保护生态环境，有效降低了材料消耗和成本，提高固废物料回收的经济效益和环境效益。

Method of red mud processing

FIELD: metallurgy. SUBSTANCE: methods include leaching of red mud using HCl with producing the leaching product containing the first metal ions, for example aluminium, and solid substance. Then the said solid substance is separated from the said leaching product. Wherein from the leaching product other metals are extracted, for example, Fe, Ni, Co, Mg, rare-earth elements, rare metals. From the solid substance other components are extracted, for example, TiO 2 , SiO 2. EFFECT: possibility of processing of the red mud being waste of aluminium industry with production of clean products and metals. 390 cl, 13 dwg, 37 tbl, 9 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C22B 3/10 C01B 13/18 C01F 7/02 C22B 34/12 C22B 7/00 (13) 2 579 843 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014131946/02, 10.01.2013 (24) Дата начала отсчета срока действия патента: 10.01.2013 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): БОДРО Ришар (CA), ФУРНЬЕР Жоэль (CA), ПРИМО Дэнис (CA), ЛАБРЕК-ГИЛБЕРТ Мари-Максим (CA) R U (73) Патентообладатель(и): ОРБИТ ТЕКНОЛОДЖИС ИНК. (CA) 10.01.2012 US 61/584,993; 26.09.2012 US 61/706,074; 15.10.2012 US 61/713,719 (43) Дата публикации заявки: 27.02.2016 Бюл. № 6 (56) Список документов, цитированных в отчете о поиске: US 6248302 B1, 19.06.2001. US 4560541 A, 24.12.1985. SU 1426449 А3.09.1988. WO 2010079369 A1, 15.07.2010. US 4222989 A, 16.09.1980. WO 2009153321 A1, 23.12.2009. (86) Заявка PCT: C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.08.2014 CA 2013/000021 (10.01.2013) (87) Публикация заявки PCT: 2 5 7 9 8 4 3 WO 2013/104059 (18.07.2013) R U 2 5 7 9 8 4 3 (45) Опубликовано: 10.04.2016 Бюл. № 10 Адрес для переписки: 190000, Санкт-Петербург, BOX 1125, "ПАТЕНТИКА" (54) СПОСОБЫ ОБРАБОТКИ КРАСНОГО ШЛАМА (57) Реферат: Группа изобретений относится к области Со, Mg, редкоземельные элементы, редкие обработки ...

폐기물 회수를 위한 방법 및 장치

내용 없음.

Comprehensive utilization method of manganese-rich slag

本发明公开了富锰渣的综合利用方法，包括如下步骤：(1)酸浸制备浸取液和硅渣；(2)浸取液除铝；(3)除铝后浸取液除铁；(4)除铁后浸取液沉锰；(5)碳酸锰氧化焙烧制备Mn 2 O 3 ；(6)Mn 2 O 3 歧化、氧化制备得到活性二氧化锰；(7)硅渣资源化制备白炭黑或4A分子筛。本发明实现了富锰渣主要元素锰、硅、铝的综合利用，并开发出具有较高附加值的工业产品4A分子筛、活性二氧化锰、铵明矾和赤铁红，为富锰渣的利用开辟了新的途径；同时，又能达到资源充分利用，降低污染的目的。

Method for efficiently and harmlessly treating aluminum ash

本发明属于环保材料技术和有色金属冶炼技术领域，特别涉及一种铝工业生产中铝灰的处理方法。该方法以湿化学法球磨工艺强化铝灰反应为主，并加入催化剂、促进剂等加强铝灰水解反应效果，达到除去铝灰中氮的目的，将铝灰通过无害化处理后变为一种可利用的无害化粉体材料。本发明提供的无害化铝灰的的处理方法采用湿法处理铝灰，避免了铝灰易燃易爆等危险性，提高了操作安全系数；用湿法球磨的方式代替机械搅拌，在搅拌的过程中，利用球磨的机械力，强化铝灰的水解效果；缩短了工艺流程，在球磨分铝的同时，可以进一步细化铝灰，使反应更充分，提高铝灰的脱氮效果，缩短反应时间，在工业生产上能够极大的节约能源。

Dregs management system and method

一种渣滓处理组合件(14)，包括搅拌站(16)和挤压站(18)，在所述搅拌站(16)处对第一渣滓回收容器(27)中的渣滓进行搅拌，对所述第一渣滓回收容器中的渣滓进行搅拌的同时在所述挤压站(18)处对第二渣滓回收容器(27)中的由所述搅拌站之前搅拌过的渣滓进行挤压。搅拌站和挤压站可共同容纳在外壳(46)中。传送机系统(12)可以将多个渣滓回收容器推进通过所述渣滓处理组合件以进行连续渣滓处理。

The processing method of lithium ion battery

本发明的锂离子电池的处理方法是对被包含铝的框体包入的锂离子电池进行加热来进行处理的方法，其中，使用通过火焰对焚烧对象物进行焚烧处理的焚烧炉，在防止火焰直接与所述锂离子电池的框体接触的同时对该锂离子电池进行加热。

A process, apparatus, and system for recovering materials from batteries

본 출원은 재충전가능한 리튬 이온 배터리로부터 물질을 회수하여 이를 재활용하는 방법을 제공한다. 상기 방법은 상기 배터리를 크기 축소된 공급물 스트림으로 처리하는 단계; 및 이어서, 일련의 분리, 단리 및/또는 침출 단계를 통해 구리 생성물, 코발트, 니켈 및/또는 망간 생성물 및 리튬 생성물의 회수; 및 철 생성물, 알루미늄 생성물, 흑연 생성물 등의 임의의 회수를 가능하게 하는 단계를 포함한다.또한, 침지 조건하에 배터리의 크기 감소를 수행하기 위한 장치 및 시스템이 또한 제공된다.

Method for desiliconizing hydrated oxide valuable element during leaching

本发明公开了一种水合氧化物有价元素浸出时脱硅的方法。该方法包括以下步骤：S1，对水合氧化物渣进行脱水处理和渣的散碎处理；S2，干化蚀变，向水合氧化物渣中加入硫酸和水，通过控制硫酸的浓度、水的添加量、反应温度及搅磨强度实现第一次生成过滤性硅聚沉体；S3，添加水使在第一次生成过滤性硅聚沉体与未完全反应块料二次反应生成过滤性硅聚沉体；S4，添加助溶剂提高体系离子强度强化可溶硅的聚沉行为，然后稀释至设定固液比，进行固液分离。应用本发明的技术方案，不仅可以实现矿渣中有价元素浸出，同时抑制了杂质硅元素的浸出。

METHOD AND SYSTEM OF SLAG PROCESSING

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 109 726 A (51) МПК C22B 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018109726, 16.08.2016 (71) Заявитель(и): АЛТЕК ЮРОП ЛТД. (GB) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ГЕРБЕРТ, Джеймс (US) 21.08.2015 US 62/208,273 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.03.2018 R U (43) Дата публикации заявки: 23.09.2019 Бюл. № 27 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/034854 (02.03.2017) A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" R U (57) Формула изобретения 1. Агрегат (14) для обработки шлака, содержащий: станцию (16) перемешивания, на которой перемешивается шлак в первой шлаковой чаше (30); и станцию (18) прессования, на которой прессуется шлак во второй шлаковой чаше (20), который был ранее перемешан на станции перемешивания, одновременно с перемешиванием шлака в первой шлаковой чаше. 2. Агрегат для обработки шлака по п.1, дополнительно содержащий кожух (46), в котором совместно заключены станция перемешивания и станция прессования. 3. Агрегат для обработки шлака по п.2, в котором газы и пыль из станции перемешивания и станции прессования откачиваются из кожуха вместе. 4. Агрегат для обработки шлака по любому из пп.1-3, дополнительно содержащий конвейерную систему (12), выполненную с возможностью, после цикла перемешивания шлака в первой шлаковой чаше и цикла прессования шлака во второй шлаковой чаше, продвигать вторую шлаковую чашу на участок (44) извлечения, продвигать первую шлаковую чашу со станции перемешивания на станцию прессования и продвигать третью шлаковую чашу (20) с участка (42) постановки на станцию перемешивания. 5. Агрегат для обработки шлака по п.4, дополнительно содержащий первую дверь (48) между участком постановки и станцией перемешивания и вторую дверь (50) между станцией прессования и участком извлечения, причем ...

Slag processing method and system

FIELD: chemistry. SUBSTANCE: invention relates to slag processing (dross), which is formed during aluminium processing. Aluminium is extracted from slag by transportation of first slag bowl containing mixed slag from mixing station in slag treatment unit, on which slag was mixed in first slag cup so as to separate desired extracted metal from slag, to pressing station in same slag treatment unit. Positioning of the second slag bowl containing slag at mixing station and simultaneous mixing of slag in second slag bowl by means of mixing station and slag pressing in first slag bowl with the help of pressing station so that to further separate desired extracted metal from slag. Extraction is carried out in a slag treatment unit comprising a stirring station on which slag is mixed in a first slag bowl so as to separate the extracted metal from the slag, and a pressing station on which slag is pressed in a second slag bowl which was previously mixed at a stirring station in a second slag bowl while simultaneously stirring the slag in a first slag bowl so as to further separate the desired recovered metal from the slag. EFFECT: invention enables extraction of aluminium from slag while cooling/quenching with reduction of slag thermite combustion. 21 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 719 982 C2 (51) МПК C22B 7/04 (2006.01) C22B 21/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 7/04 (2020.02); C22B 21/00 (2020.02) (21)(22) Заявка: 2018109726, 16.08.2016 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): АЛТЕК ЮРОП ЛТД. (GB) Дата регистрации: 23.04.2020 Приоритет(ы): (30) Конвенционный приоритет: 21.08.2015 US 62/208,273 (43) Дата публикации заявки: 23.09.2019 Бюл. № 27 (45) Опубликовано: 23.04.2020 Бюл. № 12 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.03.2018 2 7 1 9 9 8 2 (56) Список документов, цитированных в отчете о поиске: AT 408349 B, 25. ...

A metallic smelting furnace

PURPOSE: A metal melting furnace using a burner is provided to improve the efficiency of melting metal as the heat source generated from waste tires is supplied to the furnace with high temperature. CONSTITUTION: A metal melting furnace using a burner comprises a burner for waste tires(110), a furnace(120), and a heat source supply device(130). The burner for waste tires burns the waste tires by shredding. The furnace positions waste aluminum cans(C) on a net-type shelf unit(127), and melts the aluminum cans by jetting air through a blower(122). The heat source supply device forcibly supplies the heat source generated in the burner to the furnace by the blower.

Method for acid treatment of red mud

FIELD: chemistry. SUBSTANCE: method includes leaching using water-soluble fatty carboxylic acids with less than 3 carbon atoms per molecule as the leaching agent. The desired products to be extracted are then separated from the obtained solution. Leaching is carried out with addition of red mud in portions while controlling pH and ceasing addition of the red mud upon achieving pH 2.3-3.8. After leaching, the solution is held at a given leaching temperature for at least one hour. EFFECT: high degree of extracting valuable components and high efficiency of the process by preventing precipitation of finely dispersed aluminium hydroxide. 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C22B 7/00 C22B 21/00 C22B 59/00 C01F 7/20 C22B 3/16 (13) 2 544 725 C1 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013151918/02, 20.07.2012 (24) Дата начала отсчета срока действия патента: 20.07.2012 (72) Автор(ы): Богомазов Александр Викторович (RU), Сенюта Александр Сергеевич (RU) (45) Опубликовано: 20.03.2015 Бюл. № 8 R U (73) Патентообладатель(и): Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" (RU) Приоритет(ы): (22) Дата подачи заявки: 20.07.2012 (56) Список документов, цитированных в отчете о поиске: RU 2048556 С1, 20.11.1995. RU (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.11.2013 (86) Заявка PCT: RU 2012/000593 (20.07.2012) 2 5 4 4 7 2 5 2034066 С1, 30.04.1995; . US 3295961 A, 03.01.1967. RU 2140998 С1, 10.11.1999; . US 4668485 A, 26.05.1987 2 5 4 4 7 2 5 R U WO 2014/014380 (23.01.2014) Адрес для переписки: 660111, г.Красноярск, ул. Пограничников, 37, стр. 1, ООО "РУСАЛ ИТЦ", Начальнику ПИО С.А. Пановой (54) СПОСОБ КИСЛОТНОЙ ПЕРЕРАБОТКИ КРАСНЫХ ШЛАМОВ (57) Реферат: Изобретение относится к способу кислотной добавлении красного шлама с контролем переработки красных шламов, получаемых в значений pH ...

Method for recovering aluminum and heavy metals in electroplating sludge

本发明公开了一种回收电镀污泥中铝和重金属的方法，包括以下步骤：(1)电镀污泥的预处理：将收集的电镀污泥进行压滤脱水，加入酸溶液，混合搅拌，收集溶液，记为A液；(2)混合配料：向A液中加入配料，得B液；(3)铝的回收：将B液转入反应釜，升温至250‑450℃，恒温16‑48h，收集上清，记为C液，沉淀在干燥，得勃姆石晶体；(4)重金属的回收：将C液使用氢氧化钠、草酸钠或碳酸钠调节pH为4‑10，静置后，收集上清，记为D液，收集沉淀干燥，获得重金属元素。本发明能够有效分离电镀废泥中的杂质Al，同时重金属离子的回收率高，能够转化为高纯度的重金属产品，实现了电镀废泥的资源化利用。

Method and industrial process for recovering raw materials from paper-containing wastes by means of ionic liquids

FIELD: chemistry.SUBSTANCE: invention relates to a method for recovering raw materials containing cellulose, plastics and metals from paper-containing waste, packaging materials or composite materials in which cellulose is first dissolved using ionic liquids, and the ionic liquids are reduced by precipitation, the method comprising the following processing steps: crushing the raw material, purifying the raw material, separating the fraction containing cellulose using water, resulting in a fraction of cellulose and the rest of the composite material, drying the fraction containing cellulose, dissolving the cellulose in the ionic liquid, precipitating the cellulose with a coagulant, separating the cellulose as a solid and drying the cellulose, separating the ionic liquid from the coagulant for the cellulose, purifying and removing the ionic liquid, dissolving plastic from the rest of the composite material, separating metal as a solid and drying of the metal, obtaining solvent from the plastic solution, recovering the solvent residue from the plastic, and extruding the plastic. Invention also relates to an installation which comprises one or more of the following main components: ionic liquid storage tank [LM1], separation unit [R1] for a cellulose-containing component, drying devices for the cellulose-containing component, for metal and for cellulose, tank [LM2] for storing a solvent intended for plastic, dissolving container [R2] and [R3] for cellulose precipitation, a cellulose separation unit or a metal separation unit, device [R4] for separating ionic liquid from coagulant, cellulose purification device, container [R6] for dissolving plastic, device [R7] for separating solvent from polymer solution, plastic extruder, heat exchangers [WT1, 2], filters [F1, 2] and pumps [P1, 2].EFFECT: method enables recovery of all three types of basic components from paper-containing waste, packaging materials or composite materials, specifically cellulose, plastics and metal, in ...

Method for removing fluorine in nickel-cobalt-manganese solution

本发明提出了一种去除镍钴锰溶液中氟的方法，属于溶液净化技术领域。一种去除镍钴锰溶液中氟的方法，包括以下步骤：分离、破碎、筛选废旧锂离子电池的集流体；酸溶集流体，得到含铝溶液；含铝溶液加入到含氟的镍钴锰溶液除氟，得到含氟渣和除氟后的镍钴锰溶液。本发明提供的技术方案，除氟后的镍钴锰溶液中氟离子及铝离子浓度均小于0.01g/L；含氟渣中镍钴锰含量均低于0.5%；通过利用溶解集流体得到的含铝溶液去除镍钴锰溶液的氟，实现锂离子电池回收时集流体和电池正极材料的并线处理，缩短回收流程，节约回收成本；镍钴锰溶液除氟后，进入到后续工艺流程，对设备基本没有腐蚀。而且，除氟后的镍钴锰溶液含铝量极低，整个除氟过程没有引入铝杂质。

Method for producing a mixed metal solution and a method for producing a mixed metal salt

망간 이온과, 코발트 이온 및 니켈 이온 중 적어도 1종을 포함하는 금속 혼합 용액을 제조하는 방법이며, 리튬 이온 전지 폐기물의 전지분을 침출 공정에 제공해서 얻어진 산성 용액이며, 적어도 망간 이온 및 알루미늄 이온과, 코발트 이온 및 니켈 이온 중 적어도 1종을 포함하는 당해 산성 용액에 대해서, 상기 산성 용액 중의 망간 이온의 적어도 일부를 수상에 잔류시키면서, 알루미늄 이온을 용매로 추출해서 제거하는 Al 제거 공정과, 상기 Al 제거 공정에서 얻어지는 추출 잔액에 대하여, 카르복실산계 추출제를 포함하는 용매를 사용해서 평형 pH를 6.5 내지 7.5로 하고, 추출 잔액 중의 망간 이온과 코발트 이온 및 니켈 이온 중 적어도 1종을 당해 용매로 추출한 후, 당해 용매로부터 망간 이온과 코발트 이온 및 니켈 이온 중 적어도 1종을 역추출하는 금속 추출 공정을 포함한다.

Method for recovering rare earth, aluminum and silicon from rare earth-containing aluminum and silicon wastes

本发明提供了一种从含稀土的铝硅废料中回收稀土、铝和硅的方法。该方法包括：S1，利用无机酸水溶液对含稀土的铝硅废料进行酸浸，得到富硅渣以及含稀土和铝离子的酸浸液；S2，向含稀土和铝离子的酸浸液中加入碱性物质并控制酸浸液的pH值为3.5～5.2，固液分离得到含氢氧化铝的沉淀和含稀土的滤液；S3，用含氢氧化铝的沉淀与氢氧化钠反应得到偏铝酸钠溶液和铝硅渣，并利用含稀土的滤液制备稀土化合物产品。上述方法将铝和稀土用酸溶解，然后通过分段碱转，先将铝离子沉淀得到氢氧化铝与稀土离子分离，然后加入过量的氢氧化钠将氢氧化铝转化偏铝酸钠溶液，实现稀土和铝同时高效回收利用，而且大幅减少氢氧化钠用量，降低了回收成本。

Lithium ion battery scrap treatment method

본 발명의 리튬 이온 전지 스크랩의 처리 방법은, 리튬 이온 전지 스크랩을 침출하고, 그것에 의해 얻어지는 침출 후 액에 대하여 고액 분리를 행하여, 제1 분리 후 액을 얻는 침출 공정과, 제1 분리 후 액에 산화제를 첨가하여, 제1 분리 후 액의 pH를 3.0 내지 4.0의 범위 내로 조정한 후, 고액 분리를 행하여, 제1 분리 후 액 중의 철을 제거하고 제2 분리 후 액을 얻는 탈철 공정과, 제2 분리 후 액을, pH4.0 내지 6.0의 범위 내로 중화한 후, 고액 분리를 행하여, 제2 분리 후 액 중의 알루미늄을 제거하고 제3 분리 후 액을 얻는 탈알루미늄 공정을 포함한다. The treatment method of lithium ion battery scrap of the present invention includes a leaching step in which a lithium ion battery scrap is leached, and a liquid after leaching obtained thereby is subjected to solid-liquid separation to obtain a liquid after the first separation, and the liquid after the first separation. After the pH of the liquid after the first separation is adjusted within the range of 3.0 to 4.0 by adding an oxidizing agent, a solid-liquid separation is performed to remove iron in the liquid after the first separation, and a de-iron process in which a liquid after the second separation is obtained. 2 After separation, the liquid is neutralized within the range of pH 4.0 to 6.0, and then solid-liquid separation is performed to remove aluminum in the liquid after the second separation, and a dealumination process in which a liquid after the third separation is obtained.

Improved processing and installation methods for processing

FIELD: metallurgy.SUBSTANCE: invention relates to a method and a unit for processing, in particular to treatment of slag for extraction of one or more useful components from it. Method of material processing, which is an upper layer from metal melting process, wherein said upper layer is slag and contains one or more salts and one or more metals, including: a) feeding slag into slag press and slag pressing; b) feeding pressed slag to grinding stage, including crushing stage; where steps (a) and (b) are carried out before temperature of slag extracted from furnace falls below 350 °C; said method also includes: c) feeding slag to leaching stage; d) obtaining a leaching product from the leaching stage; e) supplying the leaching product to the spray drying stage; f) obtaining a solid substance from the spray drying stage. Also disclosed is a material processing plant.EFFECT: technical result is higher efficiency of slag treatment.14 cl, 3 dwg, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 687 912 C2 (51) МПК B01D 1/18 (2006.01) C22B 3/04 (2006.01) C22B 3/22 (2006.01) C22B 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01D 1/18 (2018.02); C22B 21/0023 (2018.02); C22B 21/0007 (2018.02); C22B 21/0015 (2018.02); C22B 21/0069 (2018.02); C22B 3/04 (2018.02); C22B 3/22 (2018.02); C22B 7/006 (2018.02); C22B 7/04 (2018.02) (21)(22) Заявка: 2016114857, 20.10.2014 20.10.2014 (73) Патентообладатель(и): АЛТЕК ЮЭРОП ЛИМИТЕД (GB) Дата регистрации: 16.05.2019 18.10.2013 GB 1318468.4 (43) Дата публикации заявки: 24.11.2017 Бюл. № 33 5993512 A, 30.11.1999. "ASM Handbook, Powder Metal Technologies and Applications", vol. 7, 01.12.1998, ASM INTERNATIONAL, USA, pages: 92-95. RU 2439174 C2, 10.01.2010. (45) Опубликовано: 16.05.2019 Бюл. № 14 (86) Заявка PCT: GB 2014/053129 (20.10.2014) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.05.2016 (87) Публикация заявки PCT: 2 6 8 7 9 1 2 WO 2015/056033 ( ...

A kind of comprehensive recovering process of aluminium zinc white residue

本发明涉及一种火法‑湿法联合冶金工艺从生产热浸镀Al‑Zn合金中产出的铝锌硅渣中分离铝、锌、硅和铁，将铝锌硅渣破碎研磨过筛，铝锌硅渣粉料送浸出罐进行酸性浸出，浸出液经氧化除铁，除铁液先后通过有机相萃取、反萃，得到除杂和富集后的含锌反萃液，反萃液经常规锌电解得到0#锌产品。铝锌硅渣粒状料经合金熔铸得到铝锌合金中间产品，可作为热浸镀Al‑Zn合金的生产原料。本发明中能耗低，无污染，实现绿色冶炼，达到铝锌等有价金属的再生。

IMPROVEMENT OF METHODS OF PROCESSING AND INSTALLATION FOR PROCESSING

А 2016114857 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) 1] 3 < < 3х х о ВУ °’ 2016 14 (50) МПК ВОР 1/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016114857, 20.10.2014 (71) Заявитель(и): АЛТЕК ЮЭРОП ЛИМИТЕД (СВ) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): 18.10.2013 СВ 1318468.4 ПИЛ Алан (СВ), (43) Дата публикации заявки: 24.11.2017 Бюл. № 33 ГИББС Эндрю (СВ) (85) Дата начала рассмотрения заявки РСТ на национальной фазе: 18.05.2016 (86) Заявка РСТ: СВ 2014/053129 (20.10.2014) (87) Публикация заявки РСТ: УГО 2015/056033 (23.04.2015) Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) УСОВЕРШЕНСТВОВАНИЕ СПОСОБОВ ОБРАБОТКИ И УСТАНОВКИ ДЛЯ ОБРАБОТКИ (57) Формула изобретения 1. Способ обработки материала, который представляет собой верхний слой из процесса плавки металла и содержит одну или более солей и один или более металлов, включающий: а) подачу материала на стадию выщелачивания; 6) получение продукта выщелачивания со стадии выщелачивания; в) подачу продукта выщелачивания на стадию сушки или стадию распылительной сушки; г) получение твердого вещества со стадии сушки или стадии распылительной сушки. 2. Установка для обработки материала, который представляет собой верхний слой из процесса плавки металла и содержит одну или более солей и один или более металлов, включающая: а) устройство для выщелачивания; 6) загрузочное устройство, посредством которого материал подают в устройство для выщелачивания; в) выход для продукта выщелачивания из устройства для выщелачивания; г) сушилку или распылительную сушилку д) выход, находящийся в гидравлическом сообщении с распылительной сушилкой; е) выход из сушилки или распылительной сушилки для твердых веществ. 3. Способ по п. 1 или установка по п. 2, где стадия выщелачивания или установку обеспечивают одним или более других выходящих потоков, включая поток отходящих Стр.: 1 па 93711910 С У А 2016114857 ко газов, причем поток отходящих газов ...

METHOD AND TECHNOLOGICAL PROCESS OF REGENERATION OF RAW MATERIALS FROM PAPER-CONTAINING WASTES USING IONIC LIQUIDS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 152 982 A (51) МПК B29B 17/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015152982, 19.05.2014 (71) Заявитель(и): ТЮЛИПОРТ С.А.Р.Л. (LU) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ПОММЕРСХАЙМ Райнер (DE) 31.05.2013 DE 10 2013 009 138.1 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 31.12.2015 R U (43) Дата публикации заявки: 05.07.2017 Бюл. № 19 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2014/191244 (04.12.2014) (57) Формула изобретения 1. Способ и технологический процесс регенерации сырьевых материалов из отходов, содержащих бумагу, в ходе унифицированной последовательности, отличающийся тем, что целлюлозу сначала растворяют с использованием ионных жидкостей, а затем восстанавливают посредством осаждения. 2. Способ и технологический процесс по п. 1, отличающийся тем, что некоторые из синтетических материалов также получают из исходного материала при помощи процесса, основанного на воздействии растворителя. 3. Способ и технологический процесс по п. 1 или 2, отличающийся тем, что используемая ионная жидкость, которую используют для растворения целлюлозы, - галогенид, например, Cl- или Br-, кислотный остаток уксусной кислоты, например, представляет собой соединение типа A+B-, в котором в качестве катиона содержится ион имидазола, например, метилимидазол, бутилимидазол и т.п., а в качестве аниона ацетат или анион трифлата типа CF3SO3- или аналогичный, либо представляет собой смесь из нескольких ионных жидкостей. 4. Способ и технологический процесс по п. 1 или 2, отличающийся тем, что для получения пластмасс в качестве растворителя используются жидкие углеводороды или их смеси. Стр.: 1 A 2 0 1 5 1 5 2 9 8 2 (54) СПОСОБ И ТЕХНОЛОГИЧЕСКИЙ ПРОЦЕСС РЕГЕНЕРАЦИИ СЫРЬЕВЫХ МАТЕРИАЛОВ ИЗ БУМАГОСОДЕРЖАЩИХ ОТХОДОВ С ИСПОЛЬЗОВАНИЕМ ИОННЫХ ЖИДКОСТЕЙ R U A Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", М.В. Хмара 2 0 1 ...

Methods of extracting rare-earth elements from aluminium-containing materials

Настоящее изобретение относится к обработке алюминийсодержащего материала, в частности к извлечению редкоземельных элементов из алюминийсодержащего материала. Способ включает стадии, в которых проводят выщелачивание алюминийсодержащего материала кислотой для получения экстракта, включающего по меньшей мере один ион алюминия, по меньшей мере один ион железа, по меньшей мере один редкоземельный элемент, и твердого вещества и отделение экстракта от твердого вещества. Способ также включает стадии, в которых селективно удаляют по меньшей мере один из по меньшей мере одного иона алюминия и по меньшей мере одного иона железа из экстракта и необязательно получают осадок. Способ также содержит стадии, в которых селективно удаляют по меньшей мере один редкоземельный элемент из экстракта и/или осадка. Техническим результатом является возможность извлечения редкоземельных элементов из разнообразных алюминийсодержащих матеиалов. 7 н. и 138 з.п. ф-лы, 5 ил., 3 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C22B 3/10 C22B 3/20 C22B 59/00 C22B 58/00 C22B 21/00 (13) 2 588 960 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013146790/02, 19.03.2012 (24) Дата начала отсчета срока действия патента: 19.03.2012 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.04.2015 Бюл. № 12 (73) Патентообладатель(и): ОРБИТ ЭЛЮМИНЭ ИНК. (CA) (56) Список документов, цитированных в отчете о поиске: US 6248302 B1, 19.06.2001. US 4560541 A, 24.12.1985. SU 1426449 А3, 23.09.1988. WO 2010079369 A1, 15.07.2010. US 4222989 A, 16.09.1980. WO 2009153321 A1, 23.12.2009. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.10.2013 2 5 8 8 9 6 0 (45) Опубликовано: 10.07.2016 Бюл. № 19 R U 18.03.2011 US 61/454,211; 16.09.2011 US 61/535,435 (72) Автор(ы): БУДРО, Ришар (CA), ПРИМО, Дени (CA), ФУРНЬЕ, Жоэль (CA), СИМОНО, Раймон (CA), ГАРСИЯ, Мария Кристина (CA), ...

METHODS FOR PROCESSING RED SLUR

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 104 423 A (51) МПК C22B 59/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016104423, 10.01.2013 (71) Заявитель(и): ОРБИТ ТЕКНОЛОДЖИС ИНК. (CA) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): БОДРО Ришар (CA), ФУРНЬЕР Жоэль (CA), ПРИМО Дэнис (CA), ЛАБРЕК-ГИЛБЕРТ Мари-Максим (CA) 33 Адрес для переписки: 190000, Санкт-Петербург, BOX 1125, "ПАТЕНТИКА" R U (57) Формула изобретения 1. Способ обработки красного шлама, включающий: выщелачивание красного шлама с использованием соляной кислоты (HCl) с получением продукта выщелачивания, содержащего ионы алюминия и ионы железа и твердое вещество, и выделение указанного твердого вещества из указанного продукта выщелачивания; приведение во взаимодействие указанного продукта выщелачивания с HCl с получением, жидкости, содержащей указанные ионы железа, и осадка, содержащего указанные ионы алюминия в виде AlCl3, и отделение указанного осадка от указанной жидкости; нагревание указанного осадка с получением Al2O3, и выделение получаемой газообразной HCl; и повторное использование полученной таким образом газообразной HCl путем приведения ее в контакт с водой с получением таким образом композиции, имеющей концентрацию от 25 до 45 масс. % и использование указанной композиции для выщелачивания указанного красного шлама. 2. Способ обработки красного шлама, включающий: по меньшей мере частичное удаление ионов железа из указанного красного шлама путем приведения указанного красного шлама во взаимодействие с кислотой с получением рН более 10 и по меньшей мере частичного удаления ионов железа из указанного красного шлама; выщелачивание указанного красного шлама с использованием соляной кислоты Стр.: 1 A 2 0 1 6 1 0 4 4 2 3 A (54) СПОСОБЫ ОБРАБОТКИ КРАСНОГО ШЛАМА 2 0 1 6 1 0 4 4 2 3 (43) Дата публикации заявки: 22.11.2018 Бюл. № R U 10.01.2012 US 61/584,993; 26.09.2012 US 61/706,074; 15.10.2012 US 61/713,719 (62) Номер и дата ...

Method for recycling iron and aluminum in red mud by utilizing waste resources

本发明公开了一种利用废物资源回收赤泥中铁、铝的方法，属于赤泥废渣资源化利用技术领域。本发明通过将赤泥、还原剂和含有氟化钙污泥的复合添加剂混合造球再进行直接还原熔分，而后经渣铁分离后得到珠铁和熔分渣，然后将熔分渣进行碱液浸出得到溶出液和滤渣，最后使用溶出液生产氧化铝。本发明利用氟化钙污泥等工业废物制得复合添加剂，促进赤泥中铁、铝的回收，从而实现以废治废，并且减缓工业废物对环境的污染，有效提高工业废物的资源化利用。

The method of valuable element is recycled and recycled from low content earth solution and precipitation slag

一种从低含量稀土溶液和沉淀渣中回收和循环利用有价元素的方法，是从低含量稀土溶液和沉淀渣中富集回收稀土、铝、铀、钍等金属元素，并将回收的硫酸铝溶液用于浸取离子吸附型稀土。该方法包括以下内容：沉淀富集溶液中的稀土以制备沉淀渣；低含量稀土沉淀渣的硫酸浸取；浸出液中稀土、铝、钍、铀等元素的萃取分离；萃余液处理以制备可用于离子吸附型稀土浸矿的以硫酸铝为主的无机盐浸矿剂溶液；从萃取有机相反萃铀；从萃取有机相中反萃稀土和钍等元素；该方法可制得非稀土杂质含量很低的混合稀土化合物，且也使铝等主要杂质得到循环利用，铀、钍等放射性元素得到富集回收，具有显著的综合利用和环境保护效果。

The method that plasma-activated solid waste extracts silicon, aluminium and your a variety of dilute rare earth metal

本发明特别是公开了一种等离子体活化固废提取硅、铝和多种稀贵稀土金属的方法，涉及的贵金属主要包括稀土及其它原料含有的稀贵元素，本发明以任一含钠盐或钾盐的物质为助剂，在等离子体的作用下活化硅铝固废，使固废中复合态的硅铝晶相分离，并使束缚在硅铝晶相中的多种稀贵稀土金属向固相表面迁移。等离子体处理后的固相产物经球磨等机械力破坏，再与水混合，以超声、搅拌、微波、或加热等任一或它们的组合等强化传质，使可溶于水的产物向液相转移。对获得的固、水混合物进行多步pH值调整和过滤操作，可获得高含硅固料、高含铝水溶液以及多种稀贵稀土金属的固料三个产品。多种稀土稀贵金属是在调整溶液环境为pH值在1‑5以及5‑13之间时获得。

Recycling treatment method and system for lead-zinc smelting water-quenched slag

本发明涉及一种铅锌冶炼水淬渣的资源化处理方法和系统，处理方法包括：使用硫酸通过循环酸浸的方式提高滤液中各种金属元素尤其是铁元素的含量，同时将水淬渣中的钙、硅能够先分离出，之后通过三次分步浓缩结晶依次提取铁元素、铝铁混合物和微量元素混合物，分别得到硫酸钙、水凝胶、氧化铁粉、硫酸铝铁絮凝剂以及金属矿粉等可供后续领域直接使用的工业产品。本发明对水淬渣的综合利用率高，达到了“吃干榨净”的程度，得到的这些元素或者混合物可作为工业生产中的原料，能够产生较好的经济效益，真正实现对铅锌冶炼水淬渣进行了全面、高度资源化处理，不仅实现了铅锌冶炼水淬渣的无害化处理，而且极大程度上提高了铅锌冶炼水淬渣的整体利用价值。

Deriving high value products from waste red mud

本说明书公开了一种从赤泥铝土残渣或其类似物回收有价值的金属和/或它们的氧化物的方法。所述方法包括：将pH小于约10的赤泥铝土残渣煅烧以提供经煅烧的赤泥铝土残渣；将所述经煅烧的赤泥铝土残渣酸浸出以提供富含二氧化硅的固体组分和酸浸出物；分离所述富含二氧化硅的固体组分和所述酸浸出物；从所述酸浸出物中沉淀出富含铁的固体组分；和从所述酸浸出物分离出所述沉淀的富含铁的固体组分以提供富含铝的液体。

Patent RU2018109726A3

`”ВУ“” 2018109726” АЗ Дата публикации: 12.02.2020 Форма № 18 ИЗИМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2018109726/02(014999) 16.08.2016 РСТД52016/047137 16.08.2016 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 62/208,273 21.08.2015 05 Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) СПОСОБ И СИСТЕМА ОБРАБОТКИ ШЛАКА Заявитель: АЛТЕК ЮРОП ЛТД., СВ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) С22В 7/04 (2006.01) С22В 21/00 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) С228В 7/00-7/04, С22В 21/00- 21/06 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): ЕАРАТТУ, Езрасепес, РАТЕМТЗСОРЕ, Раеагсь, КОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к предмету поиска пункту формулы № 1 2 3 ...

A kind of method of harmless treatment aluminium ash

本发明公开了一种无害化处理铝灰的方法，包括以下步骤：1)取待处理的铝灰，置于球磨机中，球磨，铝灰中的金属铝被压扁形成扁平状铝；过筛，扁平状铝从铝灰中分离，得到第一铝灰；2)把第一铝灰置于第一容器中，第一容器设置有排气口；往第一容器中加第一部分水，搅拌，第一铝灰中的氮化铝与水反应，产生氨气和氢氧化铝，氨气通过排气口排出；氨气排出后，第一容器中剩下的物料记为第一物料；3)取第一物料，进行除铁操作，除铁后的第一物料记为第二物料；4)对第二物料进行离心脱水操作，然后，干燥，得到含有氧物的混合物。该方法在不加热的情况下，安全地去除了铝灰中的有害物质和易燃易爆物质，使铝灰无害化和资源化。

The method of iron red mud high magnetic pre-selection-suspended state direct-reduction-high temperature melting point

本发明公开了一种高铁赤泥强磁预选‑悬浮态直接还原‑高温熔分的方法。本发明首先采用一段湿式强磁选对赤泥进行预选，预选精矿进行悬浮态直接还原，将部分铁氧化物还原为金属铁，从直接还原后的高温物料加入石灰混匀后直接进入深度还原炉，铁矿物全部还原为金属铁，同时炉料熔化并完全渣铁分离。本发明能使铁铝有效得到回收，铁回收率>96％，氧化铝浸出率>90％。

Method for harmlessly treating aluminum ash

本发明公开了一种无害化处理铝灰的方法，包括以下步骤：1)取待处理的铝灰，置于球磨机中，球磨，铝灰中的金属铝被压扁形成扁平状铝；过筛，扁平状铝从铝灰中分离，得到第一铝灰；2)把第一铝灰置于第一容器中，第一容器设置有排气口；往第一容器中加第一部分水，搅拌，第一铝灰中的氮化铝与水反应，产生氨气和氢氧化铝，氨气通过排气口排出；氨气排出后，第一容器中剩下的物料记为第一物料；3)取第一物料，进行除铁操作，除铁后的第一物料记为第二物料；4)对第二物料进行离心脱水操作，然后，干燥，得到含有氧物的混合物。该方法在不加热的情况下，安全地去除了铝灰中的有害物质和易燃易爆物质，使铝灰无害化和资源化。

PROCESS FOR RECYCLING SCRAP OF 2XXX OR 7XXX SERIES ALLOYS

Processes for recovering rare earth elements from aluminum-bearing materials

There are provided processes for recovering at least one rare earth element and/or at least one rare metal chosen from In, Zr, Li and Ga from an aluminum-bearing material. The processes comprise: leaching the material with HCI so as to obtain a leachate comprising at least one aluminum ion, at least one iron ion, the at least one rare earth element and/or the at least one rare metal, and a solid, and separating the leachate from the solid; substantially selectively removing the at least one aluminum ion from the leachate; substantially selectively at least partially removing the at least one iron ion; and substantially selectively removing the at least one rare earth element and/or the at least one rare metal.

Methods of treating fly ash

FIELD: metallurgy. SUBSTANCE: invention relates to methods of processing industrial wastes, in particular, to methods of treating fly ash. Method involves leaching of fly ash using HCl to obtain a leaching product, containing aluminium ions, iron ions and a solid substance, and separating said solid substance from leaching product. Method then includes reacting leaching product with HCl to obtain liquid containing iron ions, and a precipitate containing aluminium ions in form of AlCl 3 . Precipitate is separated from liquid. Precipitate is heated under conditions ensuring conversion of AlCl 3 into Al 2 O 3 , and formed gaseous HCl is optionally extracted. EFFECT: providing a cheap method of producing pure aluminium oxide with simultaneous production of other products of high purity and high quality. 253 cl, 7 dwg, 38 tbl, 10 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 633 579 C9 (51) МПК C01F 7/38 (2006.01) C01B 7/00 (2006.01) C22B 21/02 (2006.01) C22B 3/10 (2006.01) C22B 3/44 (2006.01) C22B 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА A62D 3/36 (2007.01) ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ A62D 3/40 (2007.01) (12) СКОРРЕКТИРОВАННОЕ ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ Примечание: библиография отражает состояние при переиздании (21)(22) Заявка: 2014143431, 11.03.2013 (24) Дата начала отсчета срока действия патента: 11.03.2013 R U Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): БОДРО Ришар (CA), ФУРНЬЕР Жоэль (CA), ПРИМО Дэнис (CA) (73) Патентообладатель(и): ОРБИТ АЛЮМИНЭ ИНК. (CA) 29.03.2012 US 61/617,422; 26.09.2012 US 61/706,028 4652433 A, 24.03.1987. CA 2240067 A1, 26.06.1997. SU 1258815 A1, 23.09.1986. RU 2424332 C2, 20.07.2011. (45) Опубликовано: 13.10.2017 (15) Информация о коррекции: Версия коррекции №1 (W1 C2) (48) Коррекция опубликована: 25.12.2017 Бюл. № 36 (86) Заявка PCT: C 9 C 9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.10.2014 CA 2013/000218 (11.03.2013) (87) Публикация заявки PCT: 2 6 3 3 5 7 9 WO 2013/142957 (03.10.2013) R U 2 6 3 3 5 ...

Processing of red mud - comprising recovery of cryolite, iron, alumin and titanium

Red mud obtd. in the Bayer process is treated with a HCl soln. (pref. at pH 2.4-2.8) at >80 degrees C. After filtration, the filtrate is treated with HF to recover cryolite. The filter cake is treated with HCl and H2SiF6 to dissolve Fe and the remaining Al which can both be recovered separately. The insoluble residue can be chlorinated to recover Ti.

Method for recovering processed aluminum scraps of aeronautical aluminum alloy

A method includes performing pre-treating, comprising fire-roasting or wet-washing, on the processed aluminum scraps of aeronautical aluminum alloy. The method further includes performing pressing formation on the pre-treated processed aluminum scraps of aeronautical aluminum alloy to form block-shaped aluminum scraps. The method further includes performing oxygen-controlled smelting on the block-shaped aluminum scraps in a smelting furnace to form aluminum alloy melt. The method further includes performing casting on the aluminum alloy melt to obtain an aluminum alloy product of meeting component requirements of aeronautical aluminum alloy.

Method of producing metallurgical-grade alumina using fluidised bed fly ash

FIELD: chemistry. SUBSTANCE: invention relates to recycling fly ash from electric power stations. Fly ash is ground and iron is removed by wet magnetic separation. Hydrochloric acid is added to the obtained filter cake to obtain a hydrochloric leachate which is passed through a macro-porous cationic resin to deeply remove iron to obtain a refined aluminium chloride solution. The refined aluminium chloride solution undergoes concentration and crystallisation to obtain crystalline aluminium, which is then calcined to obtain metallurgical-grade alumina. EFFECT: invention improves alumina extraction. 17 cl, 2 tbl, 2 dwg, 13 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 510 365 (13) C1 (51) МПК C01F 7/02 (2006.01) B09B 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2012144553/02, 27.04.2011 (24) Дата начала отсчета срока действия патента: 27.04.2011 (45) Опубликовано: 27.03.2014 Бюл. № 9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.11.2012 2 5 1 0 3 6 5 R U (87) Публикация заявки РСТ: WO 2011/134398 (03.11.2011) C 1 C 1 (86) Заявка PCT: CN 2011/073371 (27.04.2011) Адрес для переписки: 190000, Санкт-Петербург, ВОХ-1125, ПАТЕНТИКА (54) СПОСОБ ПОЛУЧЕНИЯ МЕТАЛЛУРГИЧЕСКОГО ГЛИНОЗЕМА С ПРИМЕНЕНИЕМ ЛЕТУЧЕЙ ЗОЛЫ, ОБРАЗУЮЩЕЙСЯ В КИПЯЩЕМ СЛОЕ (57) Реферат: Изобретение относится к утилизации летучей золы электростанций. Летучую золу измельчают и удаляют из нее железо путем мокрой магнитной сепарации. Добавляют соляную кислоту в полученный фильтрационный осадок с получением продукта солянокислого выщелачивания, который пропускают через макропористую катионную смолу для глубокого удаления железа с получением очищенного раствора хлорида алюминия. Проводят концентрирование и кристаллизацию очищенного раствора хлорида алюминия с получением кристаллического хлорида алюминия, который затем прокаливают с получением металлургического глинозема. Изобретение обеспечивает повышение извлечения глинозема. 16 ...

Process for purifying and recovering salt in wet-process leaching solution of overhaul residues

本发明公开了一种大修渣湿法浸出液中盐提纯回收工艺，具体涉及固体危险废弃物处理技术领域，包括步骤：(1)沉氟；(2)浸出液中和、回收铝成分；(3)制备聚合铝；(4)深度除氟及去除悬浮物；(5)吸附除钙；(6)回收钠盐。本发明通过对浸出液沉氟，得到的沉氟后液加入无机酸中和及pH调节，固液分离得到氢氧化铝胶体和除铝后液，得到的氢氧化铝用于制备聚合铝，通过回收铝制备聚合铝作为混凝剂进行深度除氟，实现以废治废，回收钠盐的纯度也得到进一步提升，使浸出液中的无机盐类得到资源化回收；处理后的浸出液可返回大修渣湿法浸出工艺循环利用，实现了浸出液废水的零排放，符合节能减排的环保政策。

With extraction iron oxide, aluminum oxide, the method for scandium oxide in a kind of utilization cobalt hydroxide nickel fibers slag and titanium white waste acid

本发明涉及一种利用氢氧化钴镍冶炼渣和钛白废酸中和提取氧化铁、氧化铝、氧化钪的方法，首先将氢氧化镍冶炼渣与钛白废酸、水按照一定比例进行中和反应，后向其中加入絮凝剂除硅，过滤后得滤液，所得滤液分别用萃取剂来进行Al、Fe、Sc的反萃取得到铝盐、铁盐和Sc(OH) 3 ，铁铝盐通过高温焙烧得到纯度较高其氧化物，Sc(OH) 3 通过焙烧得到钪氧化物。本发明的有益效果是：本发明利用氢氧化钴镍冶炼废渣来提取有价金属铁、铝，并对稀土金属钪进行回收，提高矿料中金属的综合利用率，减少对环境污染，具有良好的经济效益和环境效益。

Aluminium recovery from coated aluminium scrap material

A metal reclaiming system and method for reclaiming metal from scrap material is provided. The system has a furnace (12) and a controller (106) for controlling operation of the system. The controller (106) operates the metal reclaiming system in a first operating mode in which the furnace (12) is operated at a first temperature in the range of 350°C to 550°C to incinerate pollutants and drive off volatile organic compounds (VOCs) from the scrap material without melting the metal. The controller (106) is operates the metal reclaiming system in a subsequent operating mode in which the furnace (12) is operated at a further, higher temperature to melt metal in the said scrap for reclaiming.

Reclaiming of aluminum-chromium waste materials from etching operations

A method is provided for treating sludge containing substantial amounts of chromium, aluminum and iron and residuals of other elements. The method comprises forming a slurry of the sludge in water at a temperature ranging from ambient to 150° F. with the specific gravity of the slurry ranging from about 1.05 to 1.25, and adding a mineral acid to the slurry to provide a pH ranging from about 0.1-3 to dissolve selectively the aluminum and the chromium and leave a solids residue containing gangue material comprising an oxidized iron compound, calcium sulfate, calcium fluoride, calcium silicate among other solids. The pH of the solution is controlled at range of about 2 to 3.5 to precipitate undesirable elements, including iron, without substantially adversely affecting the dissolved chromium and aluminum. The chromium/aluminum-containing solution is separated from the solids therein to provide a substantially purified solution of chromium/-aluminum, and the pH of the solution raised to a range of about 12 to 13.8 to precipitate chromium as chromium hydroxide and provide a pregnant aluminate solution. The chromium hydroxide-containing solution is then subjected to solid/liquid separation to extract chromium hydroxide therefrom and providea pregnant aluminate solution which is thereafter treated to recover alumina therefrom.

Method for simultaneously recycling iron, sodium and aluminum from red mud

本发明公开了一种从赤泥中同时资源化利用铁、钠、铝的方法，该方法将赤泥进行过滤、干燥和研磨处理，研磨后过筛得到赤泥粉末，赤泥粉末与水按固液质量比1:(30~50)在赤泥预浸槽中混合均匀，得到赤泥浆；FeSO 4 和/或Fe 2 (SO 4 ) 3 与赤泥浆按照固液质量比1:(20~30)进行混合，通入空气进行曝气，使其充分反应；对反应后的矿浆进行固液分离，固相底渣部分外售处理或当作土壤基质处理，液相部分与CaO反应，CaO与液相按照固液质量比1:(10~15)混合后进行反应，反应后所得产物进行固液分离，所得固相底渣与置换过程中产生的底渣一起处理，液相部分回收利用，主要回用于氧化铝生产工艺。本发明可有效实现赤泥中铁、钠、铝的资源化利用和大规模工厂综合利用。

Method for separating iron, magnesium and aluminum elements from calcium-removed carbide slag

本发明公开了一种从除钙处理后的电石渣中分离铁、镁和铝元素的方法，包括以下步骤：步骤1，将除钙处理后的电石渣用酸进行酸化，滤除固体物质后，得到含铁、铝和镁的混合盐溶液；步骤2，加入萃取溶液I，调节PH<2.0，搅拌后分离得到含铁有机相和含镁铝的水相盐溶液；步骤3，滴加有机胺或有机胺水溶液，待铝离子沉淀完毕后，滤除氢氧化铝沉淀，得到含镁的水相盐溶液；步骤4，加入含有机胺的萃取溶液II，搅拌后分离得到含镁有机相及含有机胺的水溶液，该含有机胺的水溶液应用于步骤3中；步骤5，将含铁的有机相与稀硫酸进行逆流反萃，含铁的有机相中的萃取剂被重新再生，应用于步骤2的萃取溶液I中。该方法绿色环保，处理成本低。

Method for extracting metal ions from red mud using ultrasonic waves

本发明公开一种利用超声波从赤泥中提取金属离子的方法，所述提取金属离子的方法能够从作为从铝土矿(bauxite)中提取铝后剩余的废弃物的赤泥中有效地提取金属离子。根据本发明的实施例的利用超声波从赤泥中提取金属离子的方法包括：(a)洗脱所述赤泥中含有的金属离子的步骤,其中，向插入于恒温槽内部的反应槽内①投入中和的赤泥泥浆及酸性溶液或者②投入粉末形态的赤泥、蒸馏水及酸性溶液,加热所述恒温槽使所述反应槽内的赤泥泥浆进行反应的同时施加超声波，从而洗脱所述赤泥中含有的金属离子；以及(b)分离回收赤泥残渣和提取滤液的步骤，其通过过滤在所述(a)步骤中的反应后生成物来分离回收赤泥残渣和提取滤液；并且在所述(a)步骤中，所述施加超声波是利用超声波发生器，通过向安装于所述恒温槽的内部的超声波尖端施加超声波的方式实施。

Processes for treating red mud

(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date W O 2013/104059 A1 18 July 2013 (18.07.2013) W I PO I P CT (51) International Patent Classification: (74) Agent: BERESKIN & PARR LLP/S.E.N.C.R.L., S.R.L.; C22B 3/10 (2006.01) C01G 23/04 (2006.01) 40th Floor, 40 King Street West, Scotia Plaza, Toronto, C01B 13/18 (2006.01) CO1G 49/00 (2006.01) Ontario M5H 3Y2 (CA). COF 7/00 (2006.01) C22B 3/46 (2006.01) (81) Designated States (unless otherwise indicated, for every COF 7/02 (2006.01) C22B 21/100 (2006.01) kind of national protection available): AE, AG, AL, AM, C01G 3 (2006.0 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, (21) International Application Number: DO, DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, PCT/CA2013/000021 HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (22) International Filing Date: ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, 10 January 2013 (10.01.2013) NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, (25) Filing Language: English RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, (26) Publication Language: English ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 61/584,993 10 January 2012 (10.01.2012) US kind of regional protection available): ARIPO (BW, GH, 61/706,074 26 September 2012 (26.09.2012) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, 61/713,719 15 October 2012 (15.10.2012) US UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (71) Applicant: ORBITE ALUMINAE INC. [CA/CA]; 6505 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, route Transcanadienne, Bureau 610, Saint-Laurent, Quebec EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, H4T IS3 (CA). MC ...

Method for recovering iron by using high-iron red mud and method for extracting aluminum by using high-iron red mud

本发明提供一种利用高铁赤泥回收铁的方法，包括以下步骤：S1、将高铁赤泥置于密闭的还原炉内，并向还原炉内通入火炬气，进行加热还原，获得还原料。S2、对还原料研磨处理后，进行磁选，获得磁选精矿和磁选尾矿；磁选精矿为铁精矿，磁选尾矿为氧化铝富集矿。可以回收其中的铁，同时实现火炬气的利用，避免石化企业火炬气燃烧产生的大气污染。还提供一种利用高铁赤泥提取铝的方法，包括：A1、采用上述方法处理高铁赤泥，获得磁选精矿和磁选尾矿。A2、将磁选尾矿、硫酸铵和水混合均匀后，经焙烧获得焙烧熟料。A3、将焙烧熟料进行溶出，经分离后获得含铝溶液和提铝渣。实现磁选尾矿中铁、铝和硅的分离，达到综合利用高铁赤泥的目的。

Battery recycling process

The present invention relates to a method for the recovery of metals from feed materials containing such metals. More specifically, the present invention relates to the recovery of various metals contained in spent lithium-based (Li-ion) batteries. We describe a method for the recovery of metals from a feed stream containing one or more value metals and lithium. The feed stream may include at least lithium and one or more of copper, iron, aluminium, cobalt and nickel. The method comprises subjecting the feed stream to a sulphuric acid leach to form a slurry including a pregnant leach solution of soluble metal salts and a solid residue; separating the pregnant leach solution and the solid residue; subjecting the pregnant leach solution to one or more separate solvent extraction steps, wherein each solvent extraction step recovers one or more value metals from the pregnant leach solution, the remaining pregnant leach solution comprising lithium; and recovery of lithium from the pregnant leach solution.

Method for wastewater treatment for wastewater containing aluminium, magnesium, and manganese

Provided is a wastewater treatment method for selectively removing manganese from sulfuric acid acidified wastewater containing aluminum, magnesium, and manganese. The wastewater treatment method is to control precipitation of magnesium from the sulfuric acid acidified wastewater containing aluminum, magnesium, and manganeseso as to obtain demanganized wastewater, through a step wherein an acid or an alkali is added to sulfuric acid acidified wastewater to adjust pH to not less than 4.0 and not more than 6.0, whereby the sulfuric acid acidified wastewater is separated into a dealuminized solution and an aluminum precipitate; a step wherein a slurrying solution is added to the aluminum precipitate to form a slurry, then an alkali is added to adjust pH to not less than 9.0 and not more than 9.5, whereby an pH-adjusted aluminum precipitate slurry is formed; a step wherein an alkali is added to the dealuminized solution to adjust pH to not less than 8.0 and not more than 9.0, then an oxidizing agent is added to perform oxidation neutralization, whereby an oxidized and neutralized slurry is formed; and a step wherein the aluminum precipitate slurry and the oxidized and neutralized slurry are solid-liguid separated.

Methods and systems for polishing and recovering aluminum from a waste material

The invention relates to a method for separating waste material, comprising the steps of providing the waste material having aluminum and heavy metals, rough processing the waste material to remove the heavy metals, floating the material, sizing the material, comminuting the material, wet screening the material, washing the material with an acid to produce darkened material, and sorting the material to separate the darkened material and a purified aluminum product.

Recycling treatment method of fluorine-containing waste generated by aluminum electrolysis and aluminum fluoride product

本发明公开了铝电解产生的含氟废料的资源化处理方法及氟化铝产品，使用氯化铝溶液来浸出废电解质，利用浸出液含氯离子特性使用电解装置对浸出液进行电解，阴极源源不断析出氢氧根，从而得到羟基氟化铝沉淀和滤液；所得羟基氟化铝可使用湿法或（/和）干法处理工艺，转化得到高纯度氟化铝；所得滤液继续电解调节PH，以沉淀方式除去溶液中铝、氟及钙离子，所得滤液蒸发浓缩后加入碳酸钠沉锂。本发明将含氟废料中有价Al、F、Li分别转化为氟化铝及碳酸锂产品，所得氟化铝纯度高，可用于电解铝添加剂使用，实现电解铝循环经济，有利于铝电解过程的可持续发展。

Method for recovering valuable metals from leachate of waste lithium ion battery electrode material

本发明公开了一种从废旧锂离子电池电极材料浸出液中回收有价金属的方法，包括：将浸出液与磷酸盐混合，采用沉淀法或还原法将浸出液中的铜回收，得到铜渣和除铜溶液，调节除铜溶液pH，以使磷酸盐沉淀铁和铝，过滤沉淀物得到镍钴锰锂溶液，然后将镍钴锰锂溶液进行萃取分离，过滤沉淀物得到纯净的镍钴锰锂溶液，采用酸性含磷萃取剂将镍钴锰锂溶液进行萃取分离为锰镍钴硫酸溶液和锂溶液，或锰硫酸溶液、镍钴硫酸溶液和锂溶液；最后沉淀锂。本发明采用一种从废旧锂离子电池电极材料中回收有价金属，降低了回收成本，提高了镍钴收率，而且可根据需要得到多种产品。