920 results about "Metal recycling" patented technology

The invention provides lithium and aluminum hydroxyfluoride extraction equipment and a low-grade cathode carbon block recovery process, and relates to the technical field of metal recycling, the lithium and aluminum hydroxyfluoride extraction equipment comprises a bracket, a tank body, a mounting plate, a driving mechanism, a reciprocating mechanism, a water washing liquid discharging mechanism and an acid leaching liquid discharging mechanism; the tank body is installed in the support, a top plate is installed at the top end of the tank body through bolts, and a supporting frame is installed on the upper surface of the top plate through bolts. According to the scheme, a layer of pickle liquor is covered and injected after water washing liquid enters, so that the two extracting solutions can be added in a laminated manner, and the water washing liquid and the pickle liquor are quantitatively added in the laminated adding process, so that layered mixing is realized in the adding process of the device, and the efficiency of the device is improved. According to the device, the subsequent stirring time can be shortened, electric power is saved, meanwhile, it is guaranteed that two kinds of liquid are mixed more sufficiently and stably, and meanwhile the internal alkaline balance can be guaranteed through a stacked adding mode.

A method comprises planarizing a substrate material with a functionalized chemical planarization pad. The functionalized chemical planarization pad includes a plurality of functional groups bonded to a material of the pad. The functional groups are configured to chemically react with the substrate material such that a portion of substrate material bonds to the functional groups. The pad is regenerated by applying a regeneration solution configured to break bonds between the functional groups and substrate material bonded to the functional groups to form removed material. The removed material is complexed in a dissolved complexing agent to form dissolved material in an effluent phase.

The invention relates to the technical field of retired ternary power battery recovery, and particularly discloses a method for preferentially extracting lithium and recovering valuable metals from a retired ternary lithium battery and application of the method. According to the method, the traditional process is broken through the preferential lithium extraction, and efficient recovery of lithium, Ni, Co and Mn is realized by utilizing'fast-medium-slow 'multi-stage cooperation of a composite reducing agent and accurate adaptation of roasting and leaching parameters, so that the method has the advantages of low cost, high efficiency, low energy consumption and the like, and is suitable for large-scale industrial production. The method is low in energy consumption and environment-friendly, and is applied to resource recycling of the retired ternary lithium battery, and the precursor can be used for reproducing a positive electrode material or used for a catalytic material.

The invention provides a method for extracting valuable metals in waste lithium ion batteries by using a deep-eutectic solvent and a method for regenerating a positive electrode material, which are used for extracting the valuable metals in the waste lithium ion batteries and regenerating the positive electrode material by using the deep-eutectic solvent with specific composition as a leaching agent. Comprising the following steps: preparation of a eutectic solvent, acquisition of a waste positive electrode material, leaching of valuable metals from the eutectic solvent, regeneration and recycling of the eutectic solvent, recovery of transition metal elements, recovery of a lithium element, re-preparation of the positive electrode material and the like. According to the method for extracting the valuable metal of the waste lithium ion battery through the eutectic solvent and the regeneration method of the positive electrode material, the high-temperature and long-time requirements of an existing eutectic solvent leaching process can be effectively met, and the subsequent metal recovery step is remarkably simplified and even reconstructed; and short-process, low-energy-consumption and low-cost closed-loop regeneration of the positive electrode material of the waste lithium ion battery is realized.

The invention relates to the technical field of rotational flow electro-deposition, in particular to a process for treating metal-containing waste liquid by adopting a rotational flow electro-deposition technology, which comprises the following steps: removing particulate matters from the metal-containing waste liquid through a filtering device, and then recycling metal from the filtered metal-containing waste liquid through a rotational flow electro-deposition device. The rotational flow electro-deposition device comprises an electrolytic tank body, an anode shell and a plurality of cathode columns rotating synchronously, waste liquid forms rotational flow under the action of a spiral diversion trench, and metal ions are efficiently deposited on the surface of a cathode. By adopting the spiral diversion trench and the synchronously rotating cathode column structure, the waste liquid forms rotational flow in the electrolytic bath, so that the electrodeposition area of the cathode is increased, the uniform deposition of metal ions is promoted, the metal recovery efficiency and purity are improved, the manual operation intensity is greatly reduced through the cooperative control of the motor, the electric cylinder and the vacuum pump, and the production cost is reduced. The automation level of the process is improved, and the maintenance time of the cathode column is shortened.

The invention belongs to the technical field of scattered metal recovery, and particularly relates to a recycling method of tungsten-rhenium alloy waste. The tungsten-rhenium alloy is a solid solution strengthened alloy which takes tungsten element as a matrix and consists of the tungsten element and rhenium element, and has the characteristics of high melting point, high strength and high hardness. As the price is high, it is very necessary to comprehensively utilize the tungsten-rhenium alloy waste. The invention discloses a recycling method of tungsten-rhenium alloy waste. Firstly, tungsten-rhenium alloy waste is cleaned, dried and smashed, and waste powder is formed; then dispersing the waste material powder into water dissolved with ammonium metatungstate and a surfactant; then, carrying out spray drying to form mixed powder; and finally, the mixed powder is subjected to roasting and hydrogen reduction, and tungsten-rhenium alloy powder with the metal rhenium content lower than the metal rhenium content in the tungsten-rhenium alloy waste is formed. Compared with an existing tungsten-rhenium alloy waste recycling method, the recycling method has the advantages of being simple in process, low in energy consumption, small in loss and good in uniformity.

The invention relates to the technical field of battery regeneration, and discloses a waste lithium battery regeneration system based on an ultrasonic-assisted leaching structure, which comprises a leaching part, the leaching part comprises a kettle body, the top end of the kettle body is hermetically connected with an upper gland, and the upper gland is rotatably connected with a rotating shaft through a hollow shaft fixed in the upper gland; the rotating shaft is provided with a stirring structure for uniformly mixing materials through a sliding chute formed in the bottom end of the rotating shaft; and generating ultrasonic waves. The waste lithium battery regeneration system based on the ultrasonic-assisted leaching structure can effectively solve the problems that in the prior art, part of waste lithium batteries are still kept in large blocks due to insufficient preliminary crushing, the crushed products of the waste lithium batteries sink to the bottom of a reaction kettle due to high density, materials are seriously stacked, and the waste lithium batteries cannot be recycled. The problems that the leaching efficiency is reduced and the metal recovery rate is low due to the fact that valuable metal in the large-particle lithium battery broken product is difficult to make full contact and react with a leaching agent are solved.

Metal recovery and separation systems and methods, more particularly electrothermal chlorination (ETC) and electrothermal carbochlorination (ETCC) methods and systems for selective metal extraction, such as extraction of key metals from waste streams. Alternatively, other oxidizing agents, such as fluorine, bromine or iodine, may be used in place of or in combination with chlorine. Further, or other reducing agents, such as a metal (0), such as tin (0), and H2 (H2 included in argon, such as 1% to 5% by volume of H2 in argon, may be used in place of or in combination with carbon. Embodiments of the invention may utilize ETC to selectively recover In from ITO-containing waste, and utilize ETC in combination with ETCC to recover Ta from capacitor waste.

The invention provides equipment for leaching tin from tin-containing waste residues and a method for enriching and recovering tin through the equipment, and relates to the technical field of metal recycling. The equipment comprises a base, an end cover, a mounting base, a driving motor, a leaching mechanism, a feeding pipe and a discharging pipe; a heating base is installed on the top of the base, a tank body is installed in the heating base, and the end cover is installed at the top end of the tank body in a sealed mode through bolts. According to the device, water and solids in the tank body are stirred up and down when rotating eddy current is switched to ascend and descend, mixed acid and tin-containing waste residues can be conveniently stirred and mixed in a layered mode, and due to the fact that the mixed acid is added into the tank body through the acid adding pipe at the fixed position, the mixed acid can be more rapidly dissolved with the tin-containing waste residues after being added, and the stirring efficiency is improved. And if rotation is conducted in the direction of one degree of freedom for a long time, heat can be concentrated in the corresponding vortex layers, heat in the tank body can be evenly layered through lifting type auxiliary movement, heat concentration can be avoided, and high efficiency and safety in the leaching process are guaranteed.

The invention provides a method for recovering copper and diluting matte converting slag through self-heating collaborative smelting, and relates to the field of metal recovery. The method comprises the steps that liquid copper matte converting slag generated in the copper smelting process is directly discharged into a hot-state collaborative smelting furnace, multi-source copper-based solid waste subjected to coarse crushing and mixing is added, collaborative smelting is carried out under the oxygen-enriched air condition, and collaborative smelting comprises the melting period, the dilution period and the standing period; in the melting period, copper, aluminum, iron, lead and tin in the copper-based solid waste are quickly melted to form first crude copper; in the depletion period, aluminum and iron in the first crude copper and organic matter in the copper-based solid waste serve as reducing agents to reduce oxides of copper, nickel, cobalt, zinc and lead in the matte converting slag into metal states, the metal states enter the first crude copper to form second crude copper, and after being oxidized, the iron and the aluminum enter the matte converting slag to form second slag; and in the standing period, a reducing agent is added, air blowing is ended, third crude copper and third slag are formed after standing, and a crude copper product is collected.

The invention belongs to the field of genetic engineering and resource recycling, and relates to a ferrous oxide recombinant bacterium, a recombination method and application of the ferrous oxide recombinant bacterium in lithium battery metal recovery. The ferrous oxide recombinant bacterium is obtained by taking thiobacillus ferrooxidans as an original strain through genetic engineering modification; comprising thiobacillus ferrooxidans, an exogenously introduced nickel / cobalt efflux protein RcnA gene, a vector pJRD215 and donor bacteria, and the nickel / cobalt efflux protein RcnA gene is introduced into the vector pJRD215, driven to express and then introduced into the donor bacteria to express. The application of the constructed and prepared ferrous oxide recombinant bacteria in lithium battery metal recovery is used for improving the leaching efficiency of metal ions Co < + > or / and Li < + > or / and Ni < + > in lithium battery powder; and the method shows good adaptability and stability under different substrate concentrations, and provides a key experimental support and an important experimental basis for application of a microbial enhanced leaching technology in the field of waste lithium battery resource utilization.

The invention relates to the technical field of metal recovery, and discloses waste steel slag recycling treatment equipment which comprises a base, a first baffle and a second baffle are installed on the upper portion of the base through a support, a limiting column is fixed between the first baffle and the second baffle, and a roller is installed outside the limiting column in a sleeving mode. And a mounting sleeve is fixedly connected to the exterior of the first baffle, an outer sleeve is mounted on the exterior of the mounting sleeve in a sleeving mode, and the roller penetrates through the interior of the first baffle. According to the waste steel slag recycling treatment equipment, steel slag can be ground in the process that the steel slag is placed in the grinding box and a rotary cover plate drives a grinding roller to rotate eccentrically, the ground steel slag slides down through a filter screen, the steel slag can be ground into particles, metal iron and impurities in the steel slag are separated, and the waste steel slag is recycled. And the situation that impurities adhere to metal iron, and consequently energy is consumed during follow-up metal refining is avoided, and therefore the efficiency during metal separation is improved.

The invention discloses a composite treatment process for high-temperature reduction and oxidation of smelting slag, and belongs to the technical field of non-ferrous metal smelting. Comprising the following steps that smelting slag and fuel are added into a first smelting furnace for high-temperature reduction smelting, the temperature in the first smelting furnace is controlled to range from 1400 DEG C to 1500 DEG C, and a metal phase, iron-rich smelting slag and first smelting furnace smoke are obtained; the smelting slag rich in iron is fed into a second smelting furnace to be subjected to high-temperature oxidation smelting, the temperature in the second smelting furnace is controlled to be 1400-1600 DEG C, and foamed slag and second smelting furnace smoke are obtained; the foam slag is subjected to granulation treatment, cooling is conducted after treatment is completed, and smelting slag containing Fe3O4 is obtained; and after the Fe3O4-containing smelting slag is subjected to ore grinding and magnetic separation, iron ore concentrate and tailings are obtained. By means of the high-temperature phase splitting-slag phase oxidation-magnetic separation enrichment cooperative treatment technology, the problems that an existing smelting slag treatment process is complex, the environment is polluted, the valuable metal recovery rate is low, and the iron ore concentrate quality is low are solved.

The invention relates to the technical field of environmental protection, and discloses a method for degrading formamide organic wastewater and recycling key metals of a retired lithium ion battery. The method comprises the following steps: S1, obtaining the positive electrode material of the retired lithium ion battery, mixing the positive electrode material with formamide organic wastewater, and carrying out hydrothermal reaction to obtain a leachate; s2, adjusting the pH value of the leachate to 6-14, and carrying out a transition metal precipitation reaction to obtain a transition metal hydroxide precursor and a lithium-rich filtrate; and S3, adding a sodium carbonate solution into the lithium-rich filtrate, carrying out a precipitation reaction, and collecting lithium carbonate. The formamide organic wastewater serves as an endogenous reducing agent, deep degradation of the formamide organic wastewater is achieved under the hydrothermal condition, efficient leaching of key metal in the retired lithium ion battery is achieved, and waste is treated with waste; the formamide degradation efficiency can reach 90% or above, and the defects that an existing formamide wastewater treatment method is high in energy consumption, large in reagent consumption, high in cost, low in degradation efficiency and large in environmental treatment pressure are overcome.

The invention discloses a Cu and secondary aluminum cast-rolling solid-liquid composite material and a preparation method thereof, and relates to the field of metal recycling, the Cu and secondary aluminum cast-rolling solid-liquid composite material comprises a Cu layer and a secondary aluminum layer, and the Cu layer and the secondary aluminum layer form metallurgical bonding at an interface through a cast-rolling process; a diffusion bonding layer with components changing in a gradient manner exists at the interface, the thickness of the diffusion bonding layer is 5-50 microns, and a continuous or discontinuous intermetallic compound layer is generated in the diffusion bonding layer; according to the Cu and secondary aluminum cast-rolling solid-liquid composite material and the preparation method thereof, through a pre-oxidation-cast-rolling composite technology, a compact Cu2O film is prepared on the surface of Cu in advance, and a controllable reduction-diffusion reaction occurs when the compact Cu2O film makes contact with a secondary aluminum melt; according to the process, an interface barrier is removed, and newly-generated active Cu atoms and Al atoms form a diffusion bonding layer with components changing in a gradient mode under rapid cooling and pressure of a casting roller.

The invention relates to the technical field of battery recovery, in particular to a method for separating and recovering metal elements in waste ternary lithium ion battery leachate, which comprises the following steps: A) mixing an extracting agent 2-n-hexyldecanoic acid with a diluent to obtain an extracting solvent; b) mixing the extracting solvent with a saponifying agent to obtain a saponified extracting solvent; c1) mixing the waste ternary lithium ion battery leachate with the saponified extraction solvent, and carrying out single-stage extraction to obtain a raffinate water phase and a loaded organic phase; and D1) mixing the loaded organic phase with a back extraction agent, and carrying out back extraction to obtain a back extraction solution and a blank organic phase. According to the invention, the problems of complex recovery process and difficult separation of calcium and magnesium in the nickel-cobalt-manganese co-extraction process in the prior art are solved, and the recovery of nickel, cobalt and manganese can be realized through one-step selective co-extraction process; the technological process is short and the metal recovery rate is high.

The invention discloses waste battery material powder as well as a preparation method and application thereof, and belongs to the technical field of battery recovery. The waste battery material powder comprises metal compound powder and a simple substance carbon material, the content percentage of carbon in the waste battery material powder is 10-40 wt%, ID / IG is smaller than or equal to 0.5, and ID and IG are the intensity of a D-band characteristic peak and the intensity of a G-band characteristic peak in a Raman spectrum of the waste battery material powder respectively. The waste battery material powder has a relatively low ID / IG value, which indicates that the waste battery material powder has relatively low amorphous carbon content and relatively low oxidation degree of graphite; the waste battery material powder meeting the requirements that the content percentage of the carbon element is 10 wt%-40 wt% and ID / IG is smaller than or equal to 0.5 has the good metal recovery rate in the hydrometallurgy process, and the obtained graphite slag can have the good regeneration capacity.

The invention relates to the technical field of lithium ion battery recovery and wastewater treatment, and discloses a method for recovering valuable metals in waste lithium batteries and synchronously degrading antibiotics in water. The method comprises the following steps: adding a waste lithium battery positive electrode material and an oxidizing agent into antibiotic wastewater, and reacting to obtain a positive electrode metal leaching solution; adjusting the pH value of the anode metal leachate to 9-14, and carrying out solid-liquid separation to obtain a lithium-rich filtrate and a transition metal precipitate; and adding a precipitator into the lithium-rich filtrate, carrying out precipitation reaction, and collecting a lithium-rich precipitate. According to the method provided by the invention, based on an advanced oxidation process, the transition metal in the positive electrode material of the waste lithium battery can be oxidized and dissolved by an oxidizing agent to recover metal resources, and can also be used as a catalyst to activate the oxidizing agent to generate free radicals and degrade antibiotics, so that metal recovery and pollutant degradation are synchronously completed in a single system; the method is easy to operate, co-treatment of urban solid waste and wastewater is promoted, and good ecological environmental benefits are achieved.

The utility model relates to the technical field of precious metal recovery equipment, in particular to a precious metal waste dissolving reaction kettle which comprises a reaction device, the reaction device comprises a kettle body, a filtering device is arranged in the kettle body and comprises a screen drum, the outer surface of the screen drum is fixedly connected with a first connecting piece, and a second connecting piece is arranged on the outer surface of the screen drum. And a second limiting seat is arranged on the inner surface of the screen drum, and a rotating rod is fixedly connected to the inner surface of the screen drum. According to the utility model, through the arrangement of the screen drum and the scraping plate, when reacted waste materials are poured into the screen drum, the filtered waste material residues can be remained on the inner side of the screen drum due to the particularity of the screen drum, and the scraping plate can continuously scrape and brush the inner wall of the screen drum under the driving of the rotation of the rotating rod; therefore, the screen drum is prevented from being blocked by the waste slag, the screen drum is prevented from being quickly blocked during long-time use, and the use efficiency of the device is greatly improved.

The invention discloses a method for leaching waste lithium battery positive electrode powder by using intestinal flora in a neutral environment, and belongs to the technical field of resource recycling, the method comprises the following steps: step 1, a pretreatment link, the pretreatment link comprises the following process links, and each link has no sequence: (1) preparation of battery powder, (2) acquisition of intestinal flora, and (3) preparation of a culture medium; 2, domesticating the flora; and 3, valuable metal in the waste battery powder is leached out. According to the method, the intestinal flora is applied to the biological leaching of the waste LIBs positive electrode powder, so that the dependence of traditional strong acidophilic bacteria on an extremely low pH condition is broken through, and the environmental harm is greatly reduced; according to the method, inorganic acid does not need to be added, the pH value of a reaction system is stabilized within the nearly neutral range of 7.8-8.2, equipment loss caused by acid etching is reduced, reagent consumption for subsequent metal recovery and neutralization treatment is reduced, and remarkable economic benefits and environmental benefits are achieved.

A method and apparatus for producing a copper composite material comprising copper and carbon (e.g., graphite) and having improved processability and / or metal recovery in a method for recycling and / or recovering valuable metals is disclosed. The composite material is a useful intermediate in lithium ion battery recycling.

The invention aims to provide a method for preparing micron-sized zinc metastannate by wet recovery of tin and zinc in electronic wastes and a synthetic method of 4-hydroxy-1-indanone, and belongs to the technical field of metal recycling. According to the method, amino coordination and carboxylic acid chelation are utilized, tin and zinc in the electronic waste are selectively leached out under the mild acidic condition, impurity metals such as iron and copper are retained in residues due to the difference of complexing constants, and metal ion grade separation (selectivity gt and 99%) is achieved. And then, through evaporation-crystallization regulation and control, the Sn-Zn complex is directionally reconstructed into micron-sized zinc metastannate. In indanone synthesis, micron-sized zinc metastannate forms a local protonic acid environment by adsorbing trace moisture in a reaction system, synchronously activates a C = N bond (Lewis acid site catalysis) of an imine substrate and stabilizes a cyclization transition state (hydrogen bond guiding effect), so that the activation energy of [4 + 1] cycloaddition reaction is reduced, reaction equilibrium is driven to move towards a product end, and the yield of indanone is increased. And quantitative conversion of indanone under mild conditions (the yield is 60%) is realized.

The invention discloses a steel slag waste heat recovery method and system. The method comprises the steps that high-temperature molten steel slag is conveyed into a rolling crushing device to be rolled and crushed; after the steel slag is crushed, the crushed steel slag is screened; large steel slag and waste steel are conveyed to a waste steel accumulation area to be added into a converter to be recycled, and small steel slag is conveyed to a waste heat recovery device; after the waste heat of the smaller steel slag is recovered, the smaller steel slag is conveyed to the digestion device to be digested. A screening process is added after the steel slag is crushed, large waste steel and large steel slag in the crushed steel slag are screened out, and the steel slag is conveyed into a converter to be recycled; and the remaining small-size steel slag is conveyed to a waste heat recovery area for waste heat recovery. The metal recovery rate is effectively improved; and large waste steel and large steel slag can be prevented from entering a subsequent waste heat recovery area and a digestion area, and the service life of equipment is prolonged. Waste heat recovery is carried out on the crushed steel slag, the contact area of the steel slag and a heat exchange medium is remarkably increased, and the heat exchange efficiency and the steam yield are improved.

The invention discloses a method and a system for co-processing rain sewage wastewater in the non-ferrous metal resource recycling industry, the rain sewage wastewater comprises rainwater, general production wastewater, acidic wastewater and acidic wastewater, and the method comprises the following steps: carrying out coagulating sedimentation, filtration and low-pressure reverse osmosis desalination treatment on the rainwater and the general production wastewater; concentrated water of reverse osmosis is used as a liquid preparation of lime milk of waste acid wastewater and acidic wastewater; the method comprises the following steps: carrying out vulcanization reaction on waste acid wastewater and acid wastewater, carrying out neutralization treatment with lime milk, softening, filtering, resin softening, reverse osmosis and evaporative crystallization treatment, taking evaporated steam condensate as reuse water, and carrying out resource utilization on salt obtained by evaporative crystallization. According to the invention, zero discharge of wastewater generated in the non-ferrous metal recovery process can be realized, no wastewater is discharged to the outside, and natural water and soil are ensured not to be polluted.

The present invention relates to the technical field of metal waste crushing and recycling equipment, and specifically relates to a metal waste recycling device, aiming to solve the problem of poor recovery effect of metal blocks in the waste generated during the production and processing of model manufacturing, and improve the stability and accuracy of metal block recovery. The device includes a frame, a crushing box, a discharge pipe, and a metal screening mechanism. A crushing wheel set is provided in the crushing box, the discharge pipe is connected to a swirling storage bin, and multiple spiral channels are provided in the swirling storage bin. Light waste is removed through a stepped surface and a spiral blowing pipe, and a negative pressure discharge pipe is used to discharge the light waste. The metal screening mechanism includes a bent pipe, a first electrode plate, a second air-assisted pipe, and a second electrode plate. The metal blocks are charged through the action of charge repulsion and generate a downward force, shortening their horizontal displacement to achieve efficient separation of the metal blocks. The present invention also improves the metal recovery efficiency and enhances the environmental protection performance.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a waste metal recovery wastewater treatment device which comprises a base frame, a reaction frame is arranged at the upper end of the base frame, a cover plate is arranged at the upper end of the reaction frame, a fixed connection frame is arranged on one side of the base frame, and a replacement structure is arranged in the fixed connection frame. Reaction structures are arranged in the base frame and the reaction frame; the reaction structure comprises a water passing pipe, the water passing pipe is rotationally connected to the surface of the cover plate, and one end of the water passing pipe extends into the reaction frame. By arranging the replacement structure, when the activated carbon plate is used for a long time and the interior of the activated carbon plate is saturated, the second placement frame moves the saturated activated carbon plate to the replacement position for replacement, and the first placement frame can drive a new activated carbon plate to move to the lower end of the reaction cylinder, so that the replacement of the activated carbon plate is realized; and through the design of sliding grooves in the surfaces of the partition plates, it can be guaranteed that movement between the first containing frame and the second containing frame does not affect each other and is conducted simultaneously.

The invention provides a lithium battery valuable metal separation and recovery method based on multi-stage synergistic extraction. The method comprises the following steps: obtaining an electrode material from a waste lithium battery, and crushing and roasting the electrode material; carrying out multi-stage extraction on the roasted electrode material, and sequentially carrying out lithium element extraction, cobalt and nickel element extraction and manganese element extraction; and carrying out back extraction, separation and metal recovery on the lithium-containing organic phase, the cobalt-nickel-containing organic phase and the manganese-containing organic phase obtained by the multi-stage extraction to respectively obtain lithium carbonate, metal cobalt, metal nickel and manganese dioxide. According to the method, a multi-stage synergistic extraction process is adopted, a specific extraction agent and optimized extraction conditions are selected according to the properties of different valuable metals in the lithium battery, and the valuable metals are extracted in a graded and coordinated manner in combination with a pi-pi conjugated amphiphilic dissolution aid, so that the valuable metals such as lithium, cobalt, nickel, manganese and the like are efficiently separated and recycled, and the resource utilization rate is effectively increased.

The invention relates to the field of solid waste utilization, in particular to a building waste recycling device. The metal recycling device comprises a base, a conveying box, a feeding part, a material arranging box, a flow dividing channel, a metal recycling barrel, a returning channel and a discharging assembly. The conveying box is positioned on the group of bases, the lower end is used for feeding, and the upper end is used for discharging; the pressing and cutting assembly is arranged at the top of the material arranging box, and the material pushing assembly is arranged at the bottom of the material arranging box. The flow dividing channel is connected between the conveying box and the material arranging box, one end of the built-in flow dividing assembly feeds materials through the conveying box, and after waste materials are divided, the other end of the built-in flow dividing assembly enables the waste materials which are not divided to enter the material arranging box. One end of the metal recycling barrel is communicated with the material arranging box, and the other end is communicated with the shunting channel through a recycling pipeline. The return channel is located below the flow dividing channel and connected between the conveying box and the material arranging box. The discharging assembly penetrates through the bottom of the return channel. The invention provides an efficient and reliable solution for reutilization of building wastes.

This invention provides a method for extracting valuable metals from spent lithium-ion batteries using a eutectic solvent and a method for regenerating cathode materials. The method utilizes a eutectic solvent of a specific composition as a leaching agent to extract valuable metals from spent lithium-ion batteries and regenerate cathode materials. The steps include: preparation of the eutectic solvent, acquisition of spent cathode materials, leaching of valuable metals using the eutectic solvent, regeneration and recycling of the eutectic solvent, recovery of transition metal elements, recovery of lithium elements, and reprocessing of cathode materials. This invention's method for extracting valuable metals from spent lithium-ion batteries using a eutectic solvent and regenerating cathode materials effectively overcomes the high temperature and long processing time requirements of existing eutectic solvent leaching processes and significantly simplifies or even restructures subsequent metal recovery steps, achieving a short-process, low-energy-consumption, and low-cost closed-loop regeneration of spent lithium-ion battery cathode materials.

The invention discloses a technical method of a lean magnetite dry-discarded tailing recleaning recovery process, and relates to the technical field of iron ore recovery. The technical method of the lean magnetite dry-discarded tailing recleaning and recycling process is characterized by comprising the following specific operations: S1, stacking coarse tailings at one place; s2, adding the coarse tailings obtained in the step S1 into a vertical shaft crusher; s3, the materials obtained in the step S2 are added into a double-layer efficient fine powder sieve, then the materials with the particle size being 0-6 mm serve as stone powder to be subjected to the step S4, the materials with the particle size being 6-16 mm serve as melon seed slices to be subjected to the step S5, the materials with the particle size being larger than 30 mm serve as medium four stones to be subjected to the step S6, and if other materials exist, the materials with the particle size being larger than 30 mm serve as medium four stones to be subjected to the step S6. According to the lean magnetite dry-discarded tailing recleaning and recycling process technical method, existing coarse tailing (0-30 mm) building material products are subdivided, and the standard of mainstream building material products in the market is met; and fine-fraction (0-6 mm) fine ore resources in the coarse tailings are subjected to re-separation and recovery, so that the metal loss is reduced, and the metal recovery rate is increased.