127 results about "Metal recycling" patented technology

The utility model relates to a kind of water body heavy metal pollution cyclic repair equipment, its structure is: three purification columns are positioned in the shell inner cavity circumference, heavy metal chelate particles are equipped in purification column;Water tank is connected at the lower end of shell, three water tanks of upper open are distributed in the circumference in water tank, the top of water tank corresponds with the position of purification column, the top of water tank is connected inlet pipe, extends water tank, pipe end portion has butterfly valve, the bottom of water tank is connected outlet pipe, extends water tank, pipe end portion has three-way valve;Positioning plate is connected at the upper end of shell, three water circulation pumps are peripherally arranged in positioning plate, the water inlet of water circulation pump upper end is communicated with the inner cavity of corresponding water tank by outlet pipe, the water outlet position of water circulation pump lower end corresponds with the upper end opening position of purification column. The repair equipment can repair heavy metal pollution water body by the purification column filled with adsorption material, and through water circulation system, improve water body repair efficiency, realize heavy metal recovery and the reuse of adsorption material.

This utility model discloses a metal recovery device for industrial wastewater treatment, including a sedimentation tank body. Two U-shaped guide rails are fixedly connected to the top of the sedimentation tank body. A reagent dispensing chamber is located at the top of the sedimentation tank body. Four T-shaped bushings are fixedly connected to the bottom of the reagent dispensing chamber. The inner walls of two T-shaped bushings are rotatably connected to the same drive shaft. An L-shaped frame is fixedly connected to the outer wall of the reagent dispensing chamber. A servo motor is fixedly connected to the outer wall of the L-shaped frame. One end of the output shaft of the servo motor is fixedly connected to one end of one of the drive shafts. Two wheels are fixedly fitted onto the outer walls of both ends of the two drive shafts. This utility model uses a servo motor to drive the drive shafts, causing the wheels to move along the U-shaped guide rails, allowing the chemical reagent dispensing chamber to move back and forth on the top of the sedimentation tank. This breaks the limitations of fixed-point dispensing and ensures that the chemical reagent can cover the entire sedimentation tank area.

A system for dynamic oxidation of a heap of copper ore includes a “process island” for formulating and dispensing oxidizing reactive mixtures having predetermined compositions, and irrigating the heap with the mixtures to progressively transform the ore and maintain conditions for enhanced recovery of metal by heap leaching, solvent-extraction and electrowinning. In embodiments, the system is adapted to obtain copper metal from the refractory copper mineral chalcopyrite.

The application discloses a kind of for tantalum niobium tailings in tin metal recovery's synergistic treatment system, specifically related to metallurgical solid waste resource utilization technical field, acoustic-electricity perception pre-agglomeration module exports pre-agglomeration probability index according to pre-agglomeration threshold value;Heat resistance chromatography module exports the temperature field and fluidized void fraction distribution of suspected agglomeration area;Inhibiting ingredient self-adapting module calculates inhibitor addition rate according to distribution;Wind material decoupling adjustment module exports decoupled wind speed and feed rate set value according to addition rate and bed pressure drop;Chain negative feedback blocking module detects pressure drop deviation to generate feedback correction, superimposed to wind speed set value and reversely adjust feed rate set value, while used to update pre-agglomeration threshold value;The application realizes the online identification of agglomeration precursor, accurate danger area precision inhibiting and the closed-loop cooperation of wind material decoupling, inhibits the nonlinear deterioration of coking loss flow, makes tin recovery rate keep stable when tailings fluctuation, and reduces inhibitor consumption and manual intervention.

A method for recycling catalytic metals comprising: collecting a plurality of spent catalytic metals, wherein the spent catalytic metals contain cathodes of NMC111, NMC622, NMC811, NCA, LCoO2, LiNi0.5Mn1.5O4, LiMnO4, LiNiO2, LiMn2O4, and / or LiMnO2 compositions; subjecting the plurality of spent catalytic metals to a green mixture, wherein the green mixture includes dihydrogen phosphite and water, phosphoric acid and water, sulfuric acid and water, hydrogen chloride and water, or nitric acid and water, at temperatures of between 80 and 120° C. to form a metal leachate solution; and recovering lithium (Li) from the metal leachate solution.

The present invention relates to a valuable metal recovery alloy comprising: a valuable metal recovery alloy core part; a porous intermediate layer positioned on the core part; and a Cu-containing coating layer positioned on the porous intermediate layer and on at least a portion of the surface of the porous intermediate layer.

This invention provides a device for recovering valuable metals from molten slag, comprising a vacuum distillation furnace. The vacuum distillation furnace contains graphite discs for condensation and a heating coil for temperature control. A discharge pipe is located at the bottom of the vacuum distillation furnace. The vacuum distillation furnace includes multiple vertically arranged temperature control zones. Multiple sets of graphite discs are arranged vertically, with a condensation zone formed between adjacent discs. Through holes are formed on the surface of each graphite disc to connect adjacent condensation zones. This invention enables molten slag to undergo multiple condensation separations with a single heating process, significantly shortening the metal separation cycle.

The application discloses a low copper loss double-side blown bath smelting method and belongs to the technical field of copper pyrogenic smelting. The method constructs a vertical oxygen potential gradient in the same smelting furnace: 70%-85% of oxygen-rich air is blown into the tuyere at the lower part of the furnace body to form a strong oxidation smelting zone; and a reducing medium such as natural gas or pulverized coal is sprayed into the slag layer at the upper part of the furnace body to form a weak reduction clarification zone. The amount of the reducing medium sprayed is dynamically adjusted by on-line monitoring of the CO content in the flue gas or the Fe3O4 content in the slag, and the Fe3O4 content in the slag is controlled to be 3%-6%. The method efficiently reduces Fe3O4 in the slag into FeO, significantly reduces the viscosity of the molten slag, and improves the slag-ice-copper separation condition, so that the copper content in the discarded slag is stably reduced from more than 1.8% in the conventional method to less than 1.3%, and the metal recovery rate is improved. Meanwhile, the method realizes integration of smelting and tempering, simplifies the process, reduces energy consumption, and enhances the adaptability to complex raw materials.

This invention provides a method for recovering valuable metals from waste ternary lithium battery cathode materials. The recovery method includes: (1) reducing and leaching the black powder of waste ternary lithium battery cathode materials to obtain a leaching slurry, and removing impurities from the leaching slurry to obtain a ternary leachate; (2) extracting the ternary leachate to remove calcium and copper to obtain an organic phase loaded with calcium and copper and a raffinate after calcium and copper extraction; (3) treating the raffinate after calcium and copper extraction with resin to remove fluoride and phosphorus to obtain a solution after fluoride and phosphorus removal; (4) co-extracting the solution after fluoride and phosphorus removal with nickel, cobalt, and manganese to obtain a mixed solution containing nickel, cobalt, and manganese and a lithium-containing solution. The recovery method provided by this invention has a high recovery rate of valuable metals, thorough separation of impurities, and yields a battery-grade mixed solution of nickel, cobalt, and manganese that can be directly used to prepare ternary precursors. It also achieves lithium recovery. The recovery method is simple, efficient, and has low environmental pollution.

The application provides a metal recovery device in electroplating wastewater, and relates to the technical field of electroplating wastewater treatment.The metal recovery device comprises a recovery tank, at least one storage cylinder assembly and two barrier agitation structures.The recovery tank is respectively provided with an inlet end and an outlet end on both sides, and a recovery discharge part is arranged at the center of the bottom wall.Two symmetrical material guiding slopes are arranged on the inner bottom wall.The barrier agitation structures are slidably arranged on the upper frame body, and are driven by an agitation driving assembly to move synchronously and reversely.The barrier agitation structures trigger flocculating agent feeding and agitate waste liquid synchronously when moving below the storage cylinder assembly.The bottom of the barrier agitation structures contacts with the material guiding slopes to form a barrier when moving to both ends of the recovery tank.The metal recovery device realizes linkage of intermittent flocculating agent feeding and waste liquid agitation through reciprocating movement of the barrier agitation structures, and automatically blocks metal precipitates when discharging liquid, so that the metal recovery rate and the precipitate collection efficiency are effectively improved, and the structure is compact and convenient to operate.

Disclosed herein is a composite material (pyrolyzed black mass) including valuable metals, such as nickel, cobalt, manganese, lithium, aluminum, and copper, and having improved processibility and / or metal recovery in processes for recycling and / or recovery of the valuable metals. The composite material is a useful intermediate in the recycling of lithium ion batteries. Also disclosed herein is a process for producing the composite material from lithium ion batteries.

The present invention relates to a method for treating a by-product sodium sulfate waste liquid generated in the secondary battery industry. More specifically, for the treatment of by-product sodium sulfate generated during the recovery of valuable metals, solid-phase sodium sulfate can be electrolyzed to produce sulfuric acid and sodium hydroxide in an environmentally friendly manner, of which sulfuric acid is converted into solid calcium sulfate or calcium carbonate through a separate treatment means.

This invention relates to a method for the reverse-sequence dual-temperature zone oxygen-enriched oxidation separation and recovery of antimony and tellurium from a lead-bismuth alloy. The method involves melting the alloy and controlling the temperature within the range of 580-600℃, then introducing oxygen-enriched compressed air into the melt for the first stage of oxidation. The system temperature is then adjusted to 510-550℃, and oxygen-enriched air is continuously introduced for the second stage of oxidation. A composite oxidant is added in batches to the resulting low-antimony molten alloy to obtain a first-grade lead-bismuth alloy. The obtained conversion slag is pretreated by ball milling and then leached with sodium hydroxide solution. After solid-liquid separation, leaching residue and conversion liquid are obtained separately. The conversion liquid undergoes subsequent purification and electrowinning processes to finally produce #1 tellurium ingots. This invention, through reverse-sequence dual-temperature zone oxygen-enriched oxidation control, achieves preferential volatilization and recovery of antimony while inhibiting excessive oxidation of lead and bismuth, and simultaneously allows residual antimony and tellurium to enter the conversion slag. It has significant advantages such as a compact process flow, high metal recovery rate, strong operational controllability, and good environmental compatibility.

The utility model discloses a kind of dangerous waste landfill pretreatment devices, belong to dangerous waste processing field, including base, screening assembly and crushing assembly, the screening assembly is fixedly connected on base upper end, the crushing assembly is set on screening assembly upper end, the crushing assembly is used to crush dangerous waste garbage, the base upper end is provided with liquid pool, the position of the liquid pool corresponds with the position of screening assembly, the screening assembly includes support plate, and the support plate is fixedly connected on base upper surface;The dangerous waste landfill pretreatment device is crushed by setting crushing assembly, screening assembly and liquid pool, the screening of dangerous waste after crushing is completed synchronously, dehydration and ferrous metal recovery are combined with the conveying belt of screening assembly, solve the problem that traditional equipment function is single, need step operation, make dangerous waste processing process more simple and convenient, to greatly improve the work efficiency of dangerous waste pretreatment.

This invention relates to a valuable metal recycling composition and a valuable metal recycling method. The valuable metal recycling composition comprises: a valuable metal recycling alloy containing a carbon layer; and a lithium compound, wherein the carbon layer is disposed in at least a portion of the surface and interior of the valuable metal recycling alloy, and the carbon (C) content in the carbon layer is 60% or more, based on 100% by weight.

A processing operation for processing a metal-containing material, comprising at least one of (i) a heap leach circuit that leaches a metal from a metal-containing material with a leach solution and produces a pregnant leach solution, the circuit including a metal recovery unit that recovers the metal from the pregnant leach solution and (ii) a concentrator circuit that forms a metal-containing concentrate from a comminuted metal-containing material; a pH treatment unit that adjusts the pH of at least one of a heap leach effluent stream and a concentrator effluent stream, and forms at least one pH-adjusted effluent stream, wherein the heap leach effluent stream is produced by the heap leach circuit of the processing operation or a different heap leach circuit and the concentrator effluent stream is produced by the concentrator circuit of the processing operation or a different concentrator circuit; and at least one effluent storage unit that receives and stores the at least one pH-adjusted effluent stream, and forms process water that is used in at least one of the heap leach circuit and the concentrator circuit of the processing operation.

The application discloses a method for leaching waste lithium battery positive pole powder in a neutral environment by using common desulfurization vibrio, and belongs to the field of waste battery metal resource recycling and bio-metallurgical technology. The common desulfurization vibrio obtained through gradient domestication is inoculated into a modified culture medium, and then the bacterial liquid is activated to construct a bioleaching system, so that the valuable metals in waste NCM, NCA, LFP, LCO, LMO and other positive pole materials are bioleached. The common desulfurization vibrio is innovatively used as the leaching strain, and the dependence on acidophilic bacteria in traditional bioleaching is abandoned, so that the efficient dissolution and directional separation of valuable metals in various waste LIBs positive pole materials are realized under mild neutral conditions, and a new microbial technical scheme is provided for waste LIBs positive pole valuable metal recovery.

The application discloses a method for recovering tin, gold and silver from high-gold-silver-tin-containing materials, and belongs to the technical field of non-ferrous metal smelting methods.The method adopts a hydrochloric acid-hydrogen peroxide system for leaching, so that tin, gold and silver enter a solution and are separated from insoluble residues; sulfur dioxide is introduced into the acid leaching solution to selectively reduce and precipitate sponge gold; after the gold is precipitated, silver chloride is precipitated by diluting the solution, and high-purity silver powder is obtained by dissolving the silver chloride in ammonia water and reducing the silver chloride by hydrazine hydrate, and the silver powder is cast into an ingot; the tin-containing solution can be recycled or neutralized to precipitate and recover tin.The method has a short process, realizes efficient separation of gold, silver and tin by selectively reducing gold by SO2 and precipitating silver by dilution, has high metal recovery rate (tin > 98.5%, gold > 99.5%, and silver > 99.5%), most of the solution is recycled, is environmentally friendly, has remarkable economic benefits, and the like.

A method for recycling catalytic metals comprising: collecting a plurality of spent catalytic metals, wherein the spent catalytic metals contain cathodes of NMC111, NMC622, NMC811, NCA, LCoO2, LiNiO.5Mnl.5O4, LiMnO4, LiNiO2, LiMn2O4, and / or LiMnO2 compositions; subjecting the plurality of spent catalytic metals to a green mixture, wherein the green mixture includes dihydrogen phosphite and water, phosphoric acid and water, sulfuric acid and water, hydrogen chloride and water, or nitric acid and water, at temperatures of between 80 and 120°C to form a metal leachate solution; and recovering lithium (Li) from the metal leachate solution.

This utility model discloses an industrial wastewater sludge metal recovery device, including a fluidized bed drying box. Support rods are symmetrically distributed on the side wall of the fluidized bed drying box, and a screening and purification box is located below the fluidized bed drying box, inside the support rods. A feeding port is located on one side of the upper end of the fluidized bed drying box. The fluidized bed drying box and the screening and purification box are connected by a discharge pipe. A drying and dehumidification mechanism and a purification mechanism are respectively provided inside the fluidized bed drying box and the purification mechanism. The drying and dehumidification mechanism includes a permeable conveyor belt and a turning assembly located on the inner wall of the fluidized bed drying box. The turning assembly is located inside the permeable conveyor belt, and air inlets are evenly distributed on the side wall of the fluidized bed drying box on one side of the permeable conveyor belt. The purification mechanism consists of a sliding rod, a supporting slider, and a screen bucket. This utility model belongs to the field of wastewater sludge treatment technology, specifically an industrial wastewater sludge metal recovery device.

Disclosed herein are a process and a device for producing a copper composite material including copper and carbon, such as graphite, and having improved processibility and / or metal recovery in processes for recycling and / or recovery of valuable metals. The composite material is a useful intermediate in the recycling of lithium ion batteries.

The application relates to the technical field of metal recovery, in particular to a metal removal and recovery method for waste titanium anode plates; nanometer particles are subjected to a coating operation, cations are introduced to graft the coated nanometer particles, grafted nanometer particles are obtained, and the grafted nanometer particles are pretreated to obtain initial nanometer particles. In the application, the metal recovery of the waste titanium anode plates is realized through the synergistic effect of magnetic nanometer particle synthesis, functional modification and biological enzyme directional degradation; the surface of the nanometer particles is subjected to double-layer coating of silicon dioxide-polyacrylic acid and synergistic modification of carboxyl and amino groups, the adsorption capacity and selectivity to noble metal ions are enhanced, the noble metal ions are reduced to metal states through catalysis of an active enzyme solution, an integrated process of adsorption to degradation and then magnetic separation is formed between the noble metal ions and the functional nanometer particles, and after the titanium matrix is regenerated through pickling, high-value recovery and utilization of metal materials can be realized through smelting or powder metallurgy.

The utility model discloses a kind of waste metal recycling resource utilization equipment based on electromagnetic induction, it is related to waste metal recovery technical field, and it includes: first conveyor and magnetic induction coil, the middle of first conveyor is connected with second conveyor, the top of first conveyor is equipped with rack, the middle of rack is equipped with magnetic induction coil.This waste metal recycling resource utilization equipment based on electromagnetic induction can pour waste into fixed frame when using, then drive motor drives output shaft and crushing roller to rotate, crushing roller rotation will cooperate with broken block to crush waste, then transmission belt and driven shaft make carousel rotate, carousel rotates will cooperate with lug and connecting frame to drive movable frame movement, simultaneously by movable spring, movable frame and screen mesh continuously reciprocate, at this moment, screen mesh can screen waste, avoid large particle impurities to affect the separation effect of metal.

This invention discloses a green recycling and precious metal extraction method for lead-free printed circuit boards, belonging to the field of precious metal extraction technology. The method involves first freezing the circuit board with liquid nitrogen, then crushing and air-separating it under an alternating magnetic field. The remaining particles are then soaked in a composite organic acid solution, treated with a combination of ultrasound and microwave, rinsed, and floated. The metal particles are dissolved in a mixture of nitric acid and hydrogen peroxide, and a composite precipitant is added to precipitate the precious metals. The precipitate is reduced with hydrogen to obtain crude precious metals, which are then electrolytically refined. After refining, a composite anti-oxidation film is deposited. Finally, wastewater and waste gas are treated using a combination of methods for environmental protection, achieving green recycling and efficient extraction of precious metals. The optimized coordination of each step in this invention improves the metal recovery rate and purity, resulting in refined precious metals with a purity exceeding 99.95% and an antioxidant capacity increased by 30%-50%. The environmentally friendly treatment effectively reduces pollution and can be used in high-end industries, offering both economic and environmental benefits.

The utility model discloses a kind of waste washing machine metal shell compression devices, the device includes base, the base is provided with compression box, compression box is a side or the square box of opposite pair of side open, multiple compression mechanism is set in compression box, multiple compression mechanism includes transverse compression component and longitudinal compression component, transverse compression component has symmetric distribution two groups, respectively set in the two sides of adjacent side of compression box opening side, longitudinal compression component is set in the upper portion of compression box, transverse compression component includes transverse extrusion plate and the transverse hydraulic cylinder of being set in the rear of transverse extrusion plate, longitudinal compression component includes downward extrusion longitudinal extrusion plate and the longitudinal hydraulic cylinder of being set in the above of longitudinal extrusion plate.The utility model is compressed to waste washing machine metal shell by transverse, longitudinal and rotation three directions simultaneously, compression efficiency is high, the density of compressed metal square is uniform, metal recovery rate is high, easy to operate, effect is remarkable.

1. Title of the invention Method and system for calculating and controlling the remelting temperature of multi-component alloys 2. Technical field The invention relates to a method for determining and controlling the remelting temperature of alloys in metallurgy, in particular for industrial smelting technology and metal recycling. 3. State of the art Existing methods are based on experimental measurements with stepwise temperature increases, which is energy-intensive and environmentally damaging. 4. Object of the invention The aim is to calculate the remelting temperature based on the chemical composition in order to use energy in a targeted manner, optimize the melting process and reduce environmental impact. 5. Solution to the task The procedure includes: 1. Analysis of the alloy composition, 2. Retrieving melting points from a material database, 3. Calculation of the remelting temperature using the mathematical formulas listed in this patent, 4. Real-time temperature monitoring, 5. Computer-aided control of energy supply. 6. Software can automate the process. 6. Key advantages 1. Reduced energy consumption, 2. Faster melting processes, 3. Improved process control, 4. More efficient metal recycling. 7. Areas of application Use in metallurgy, production and recycling of alloys, and in foundries.

This invention belongs to the field of non-ferrous metal recovery technology, specifically relating to a non-ferrous metal recovery device and method for copper smelting slag. The recovery device includes a tank, a stirring reaction unit, and a foam swallowing unit. The foam swallowing unit includes a swallowing cylinder, a lifting mechanism, and a collection mechanism. The lifting mechanism drives the collection mechanism to move up and down along the swallowing cylinder, allowing the collection mechanism to switch between a gathering position and an unfolding position. This invention achieves vertical lifting and active entrainment discharge of the foam layer through the flattening, lifting, gathering, and swallowing actions of the collection mechanism, thereby improving the flotation recovery rate of non-ferrous metals in copper smelting slag.

This invention relates to lithium-containing sulfuric acid aqueous solutions and methods for preparing the same. The method for preparing the sulfuric acid aqueous solution comprises: obtaining a valuable metal recycling composition from waste batteries, comprising a valuable metal alloy, a lithium compound, copper (Cu), and graphite; separating graphite from the valuable metal recycling composition; leaching the valuable metal, lithium compound, and copper (Cu) in the valuable metal recycling composition with sulfuric acid; recovering the valuable metal and copper (Cu) from the leached lithium-containing sulfuric acid aqueous solution by solid-liquid separation; and removing residual impurities from the leached lithium-containing sulfuric acid aqueous solution after the recovery step.

A method with which Mg can be removed from aluminum alloy melt whose raw material is scrap or the like. Metal removal method includes processing step of forming molten salt layer in contact with aluminum alloy melt containing Mg which covers at least part of the surface of the aluminum alloy melt. This method allows Mg to be taken in from aluminum alloy melt to molten salt layer and removed. Molten salt layer contains specific halogen element that is one or more of Cl or Br and specific metal element that is one or more of Cu, Zn, or Mn. The specific metal element is supplied as an oxide of the specific metal element to the molten salt layer. At that time, the molten salt layer contains Mg. The step of removing Mg is performed by disposing a conductor that bridges the aluminum alloy melt and the molten salt layer.

This invention relates to the field of valuable metal recovery technology, and particularly to a method for recovering valuable metals from cyanide-extracted gold-bearing carbon sludge. The steps are as follows: S1, mix carbon sludge, lime, quartz, and borax evenly, and put them into a smelting device. Place an extractant on top of the mixture and perform high-temperature smelting. After cooling, separate the slag and copper-iron alloy; S2, add the copper-iron alloy obtained in S1 to the extractant and put it into the smelting device for high-temperature melting and extraction. After extraction, cool until the iron phase precipitates. Before the extractant solidifies, remove the iron-rich phase and allow the remaining molten metal to continue cooling; S3, perform vacuum distillation on the valuable metal alloy obtained in S2. After cooling, remove the volatile extractant and the gold-silver-copper alloy. The method for recovering valuable metals from cyanide-extracted gold-bearing carbon sludge provided by this invention can simply and efficiently recover valuable metals from carbon sludge and has good application value.