73 results about "Copper anode" patented technology

The invention discloses a DCS (Distributed Control System)-based ignition and temperature rise mode of a copper anode slime roasting rotary kiln, which specifically comprises the following steps of: setting initial control conditions, drawing a temperature rise curve according to a target temperature, a temperature rise period and a temperature rise gradient, and then starting ignition preparation. Before natural gas is introduced into the combustion chamber for combustion, rotary kiln operation and combustion-supporting air purging are carried out, after purging is carried out for a period of time, combustion-supporting air and natural gas are introduced for ignition at the same time, and meanwhile the ignition condition is judged through a monitor. And if ignition fails, under the condition of no abnormity, purging can be repeated, and natural gas is introduced for re-ignition. According to the method, the natural gas flow and the combustion-supporting air volume are automatically controlled by the DCS according to the drawn temperature rise curve. The system has the beneficial effects that multiple ignition conditions can be controlled at the same time, remote automatic ignition is achieved, the ignition condition is fed back in time, the natural gas flow is flexibly controlled, the combustion temperature is controlled, the ignition effect of the rotary kiln is guaranteed, and meanwhile production operation safety of the rotary kiln is guaranteed.

The invention relates to a method for recovering tellurium from copper anode slime through cooperation of ultrasound and hydrogen peroxide, and belongs to the field of wet metallurgy of scattered metal. The method comprises the following steps: drying and grinding copper anode slime to obtain copper anode slime powder; the method comprises the following steps: adding copper anode slime powder into a sulfuric acid solution, mixing to obtain copper anode slime slurry, adding hydrogen peroxide into the copper anode slime slurry, carrying out ultrasonic enhanced leaching for 20-160min, and carrying out solid-liquid separation to obtain a leaching solution containing copper and tellurium and high-grade valuable metal leaching residues. According to the method, hydrogen peroxide is effectively promoted to be decomposed by ultrasound to generate hydroxyl radicals, the oxidation potential of a system is regulated and controlled, copper and tellurium are selectively converted into copper ions, tellurate radicals enter a solution, and valuable elements such as gold, silver and selenium are enriched in slag; necessary heat is provided for the reaction by utilizing the heat effect of ultrasonic and heat released by chemical reaction, and extra heating is not needed; strong jet flow generated by ultrasound effectively destroys raw material inclusion and secondary wrapping, reaction mass transfer is enhanced, and the leaching rate of tellurium is increased. The method disclosed by the invention is simple in leaching process operation, low in cost and high in reaction speed.

The invention discloses a method for recovering valuable metals from copper anode slime step by step, and belongs to the technical field of metallurgy and chemical industry. According to the method, through control over the oxidation-reduction potential, the oxidation-reduction potential is high in the leaching stage, and it is guaranteed that gold, selenium, tellurium and the like can be oxidized to enter a leaching solution; in the reduction stage, gold, selenium and tellurium products are reduced step by step according to the difference of gold, selenium and tellurium in reduction potentials; in the leaching stage, soluble chlorine salt is added while enough oxidation potential is guaranteed, enough chloride ions are provided for the solution, and therefore gold can enter the solution in the form of AuCl4-(tetrachloroauric acid); meanwhile, in the oxidation leaching stage, a small amount of silver enters the solution in the form of silver sulfate or silver complex, and under the condition that enough chloride ions are provided, silver is precipitated and retained in residues in the form of silver chloride, so that separation of gold and silver is achieved, and meanwhile dispersion of gold and silver in the leaching process is reduced. According to the method, valuable metal is efficiently separated and recycled.

The invention discloses a method for stepwise dissolution of copper, selenium and tellurium in copper anode slime and enrichment of precious metals, the method comprises the steps of ball milling and drying, pressure leaching, oxygen pressure conversion and alkaline leaching, in the pressure leaching process, the oxygen partial pressure in a sulfuric acid solution with the concentration of 10-30 g / L is controlled to be 0.05-0.2 MPa at the temperature of 100-120 DEG C, NaCl and HCl are added in the oxygen pressure conversion to improve the Se recovery rate, and the alkaline leaching is carried out at the temperature of 100-120 DEG C; na2S is added in alkaline leaching, so that the tellurium recovery rate is remarkably improved, and the copper-selenium-tellurium leaching efficiency is high.

The invention belongs to the technical field of supercapacitor electrode materials, and relates to a copper anode for a high-performance self-supporting supercapacitor and a preparation method and application of the copper anode. The method comprises the following steps: cutting a copper foil into regular small pieces, carrying out ultrasonic cleaning, carrying out ultrasonic treatment with a hydrochloric acid solution to remove an oxide layer, thoroughly washing with deionized water and ethanol to remove residual acid, putting the pretreated copper foil into a ceramic boat, and putting the ceramic boat in a central area of a muffle furnace; and after heating, cooling is performed to obtain the CuO-Cu2O / Cu foil electrode. The method is simple and convenient to operate, a unique CuO-Cu2O hierarchical heterostructure is formed on the surface of the copper foil by using a simple muffle furnace annealing process in an air environment, and the prepared copper anode has ultrahigh specific capacity of 27.1 Fcm <-2 > under the current density of 5mA cm <-2 >, can still keep stable performance under mechanical deformation, and can be applied to the field of lithium ion batteries. Wide application prospects are realized in the fields of portable electronic equipment, wearable equipment, large-scale energy storage and the like.

The present application relates to copper anode slime comprehensive treatment technical field, especially in kind of copper anode slime's purification treatment process. Including the following steps: copper anode slime's pretreatment;Metal gel capture agent's preparation;Vacuum inductive desulfurization of copper arsenic tellurium anode slime is removed;The noble metal of desulfurized anode mud silicon is captured.The present application can increase the mutual contact of silicon dioxide, sodium carbonate, bismuth oxide and carbon fiber and metal elements in desulfurized anode gold mud in three-dimensional space by preparing metal gel capture agent, thereby increasing the contact area, strengthening the slagging reaction of silicon dioxide and sodium carbonate with impurity elements such as arsenic and antimony, and further enhancing the ability of carbon element to reduce bismuth oxide, so that bismuth can better capture gold and silver elements, and impurity metals can better aggregate in the slag, and the obtained bismuth-silver-gold alloy particles have high purity and good metal purification effect.

The application relates to an ultrasonic treatment method of high-impurity copper anode slime. The ultrasonic treatment method is realized through hierarchical ultrasonic strengthening and synergistic leaching. In the first-stage leaching, hydrogen peroxide-oxygen-rich air composite oxidants are combined with ultrasonic cavitation effects to realize efficient oxidation leaching of arsenic, antimony and bismuth; in the second-stage leaching, sulfuric acid-sodium sulfite mixed leaching agents are used to remove harmful impurities such as arsenic, antimony and bismuth under ultrasonic strengthening, and to efficiently enrich valuable metals such as gold, silver, selenium and tellurium, so that the treatment period is shortened, energy consumption and reagent consumption are reduced, resource comprehensive utilization is improved, and the method is suitable for efficient separation and resource recovery of high-impurity copper anode slime containing refractory impurities such as arsenic, antimony and bismuth and valuable metals such as gold, silver, selenium and tellurium.

This invention relates to the field of non-ferrous metal smelting technology and discloses a high-recovery, emission-reducing copper anode mud treatment process with controlled potential. Each step employs a controlled potential method to regulate the metal leaching rate and reduction rate, thereby reducing the loss rate of valuable metals in each step and improving the overall metal recovery rate. A sulfidation process is used to treat the antimony-bismuth removal solution, enriching antimony and bismuth in the form of sulfides. An evaporation crystallization method is used to open most of the copper in the anode mud in the form of crude copper sulfate. While enriching antimony and bismuth, the production of basic copper carbonate is significantly reduced, eliminating the "rotary kiln selenium distillation" and "water leaching copper separation" processes, and reducing system acid expansion caused by the "rotary kiln selenium distillation" process. By using the recycled reduction solution and secondary gold separation solution as acid sources for the antimony-bismuth removal process and the primary gold separation solution, the waste acid reuse rate and valuable element recovery rate can be improved. This effectively reduces the total wastewater discharge, simplifies the process flow, and improves the recovery rate of valuable metals.

The invention belongs to the technical field of metallurgy, and relates to a complex gold concentrate multi-element comprehensive recovery method which comprises the following steps: S1, complex gold concentrate and an auxiliary material I are subjected to bottom blowing smelting in a bottom blowing furnace in an oxygen-enriched air atmosphere to obtain matte, bottom slag and flue gas; s2, copper matte and an auxiliary material II are subjected to top-blowing blowing in a top-blowing furnace in the air atmosphere, and crude copper, flue gas and blowing slag are obtained; s3, refining the crude copper and carbonate in an air atmosphere, introducing methane gas after the reaction is finished, and reducing in an inert atmosphere to obtain a copper anode plate; wherein in the step S1, in the bottom blowing smelting process, a coking inhibitor composed of aluminum oxide, calcium oxide, sodium carbonate, ammonium molybdate, sodium borate and cerium dioxide is blown in an ascending flue of a bottom blowing furnace, the occurrence of the coking condition can be effectively reduced, and the complex gold concentrate recovery production start-up rate is increased.

1. The name of the design product: copper anode plate mold. 2. The use of the design product: mold for producing copper anode plate. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. The right view is symmetrical with the left view, and the right view is omitted.

The utility model relates to the technical field of copper anode plate electrolysis, and discloses a copper anode plate lug pressing device which comprises a machine frame, a conveying unit used for conveying a copper anode plate, a lug pressing unit connected to the machine frame, a feeding mechanism and a supporting block connected to the machine frame, the supporting block is used for supporting the lug parts of the anode plates so that gaps can be formed between the lug parts of the anode plates and the rack, and the feeding mechanism is used for transferring the anode plates on the conveying unit to the supporting block one by one and transferring the anode plates located on the supporting block to the next working procedure at the same time; according to the utility model, the anode plates are supported by the supporting blocks, and the supporting blocks with different heights can be replaced to adapt to the anode plates produced by different molds, so that the contact area between the pressing lugs and the conducting bars is ensured, the electrolysis effect is ensured, and the electrolysis efficiency is improved.

The application discloses a kind of based on multi-source infrared copper smelting anode furnace brick thickness on-line detection and life prediction method, belong to industrial equipment health monitoring and intelligent diagnosis technical field.Through multi-view infrared thermal image acquisition furnace wall temperature field, combine brightness consistency and texture feature to carry out dynamic emissivity compensation, inhibit smoke, flame and reflection interference, obtain stable surface temperature field.Based on heat conduction and energy conservation constraint construction physical consistency deep learning model, realize temperature field to furnace brick thickness field non-contact inversion.Combining partition modeling and time series evolution analysis, predict furnace brick attenuation trend and remaining life, and realize model self-correction through on-line drift monitoring.The application can realize continuous monitoring and life warning without stopping furnace, and is suitable for complex smelting conditions.

The present application relates to the technical field of extracting silver from deselenium residue, and discloses a method for extracting silver from deselenium residue by chlorine-free double-pressure, silver is extracted from deselenium residue by chlorine-free leaching, silver in copper anode slime deselenium residue is leached by one-stage pressurization, one-stage leaching residue is sent to two-stage pressurized sulfidation transformation, sulfidation transformation residue is returned to one-stage pressurized leaching for silver extraction after roasting, one-stage leaching liquid is sent to silver recovery, and roasting leaching residue is sent to extract other valuable elements, so that the silver leaching rate is high, the impurity content of the obtained crude silver powder is low, the crude silver powder can be used as raw material for producing first-grade silver ingot, the disadvantage of needing to add a large amount of chloride in conventional silver extraction is overcome, other valuable elements are enriched, selective leaching of silver is ensured, and part of impurities is inhibited, the corrosion problem of the system equipment can be better solved due to the adoption of chlorine-free pressurized leaching, no new solid waste and waste liquid are generated in the whole process, the problem of difficult opening of the present process waste water is effectively solved, and resources are fully utilized.

The utility model discloses copper anode slime precious metal smelting equipment which comprises a hot melting furnace body, a furnace shaking mechanism is arranged at the bottom of the hot melting furnace body, a smoke pumping mechanism is arranged at the upper end of the hot melting furnace body, the hot melting furnace body comprises a furnace body, a furnace cover, a movable frame, a furnace pipe and an electric heating wire, and rotating shafts rotationally connected with the movable frame are arranged on the left side and the right side of the furnace body. The furnace pipe and the heating wire are installed in the furnace body, the furnace cover is installed at the top of the furnace pipe, the furnace shaking mechanism comprises a servo motor, an inserting rod, a connecting rod and a rotating disc, the inserting rod is detachably installed at the bottom of the furnace body, the servo motor is fixedly installed on the movable frame, the rotating disc is installed on an output shaft of the servo motor, and an eccentric shaft is arranged on the upper end face of the rotating disc. The furnace has the advantages that the furnace body can swing, heating is uniform, smoke exhaust is efficient, and blockage is prevented, and the problems that existing equipment is uneven in heating and low in smelting efficiency, and a smoke exhaust system is prone to being damaged are solved.

This invention discloses a method for the tiered extraction of copper anode slime from co-smelting copper anodes, belonging to the fields of resource comprehensive utilization and non-ferrous metal metallurgy. The method is used to treat copper anode slime produced after co-smelting waste circuit board pyrolysis residue and copper sulfide ore, followed by blowing and electrolytic refining. The method includes: sulfidation leaching of the copper anode slime to preferentially allow tellurium to enter the leachate; reduction precipitation of the tellurium-containing leachate to recover tellurium products; atmospheric pressure mixed acid leaching of the sulfidation leaching residue to preferentially allow copper and selenium to enter the leachate, yielding a copper-selenium-containing leachate and a precious metal-enriched slag; chlorination leaching of the precious metal-enriched slag to allow gold to enter the chlorinated leachate and separate from silver; and SO2 reduction precipitation and extraction separation of the copper-selenium-containing leachate to sequentially recover selenium and copper. This method can achieve tiered separation and efficient recovery of Te, Se, Au, Ag, and Cu from novel copper anode slime produced by co-smelting, and has the advantages of a clear process, good selectivity, and suitability for closed-loop operation.

This invention belongs to the field of metal refining processes and provides a parallel flow copper electrolytic refining process. The process involves setting up a balance tank outside the copper electrolytic cell, with crude copper anode plates and stainless steel cathode plates alternately arranged inside the cell and guided by flow guides. A cathode-wall flow channel is formed between the flow guides and the cell wall. Slit nozzles are set on the flow guides along the length of the cell, allowing the electrolyte to be sprayed from the cell side onto the cathode surface and form a parallel flow along the cathode wall. An anode collecting tank is set at the bottom of the copper electrolytic cell. A hydrodynamic barrier is constructed by adjusting the pressure difference between the cathode-wall flow channel and the anode collecting tank, inhibiting the migration of anode sludge to the cathode. The impurity-rich electrolyte from the anode collecting tank is introduced into an online impurity removal unit for treatment and then returned to the balance tank. After mixing with the electrolyte in the cathode circulation branch, it re-enters the cathode-wall flow channel, thereby obtaining cathode copper with uniform composition and controlled impurities.

The invention discloses a scrap copper self-adaption electrolytic refining method and system based on an impurity fingerprint spectrum, and the method comprises the following steps that a mapping relation database of the impurity fingerprint spectrum and electrolysis process parameters is constructed, and the impurity fingerprint spectrum at least comprises the type, content and phase form information of impurity elements; component analysis is conducted on the scrap copper anode plate to be treated, and an impurity fingerprint spectrum of the scrap copper anode plate is obtained; the obtained impurity fingerprint spectrum is matched with a database, and an optimized electrolysis process parameter combination is dynamically generated based on a matching result; the electrolytic refining process is executed according to the optimized electrolysis process parameter combination, and feedback control is conducted based on real-time monitoring data in the electrolysis process; according to the method, the characteristics of the raw materials can be recognized in real time, the electrolysis process is dynamically optimized, high-efficiency, high-quality and stable treatment of different-component scrap copper is achieved to prepare high-purity copper, and the defect that a fixed-formula electrolysis technology cannot adapt to component fluctuation of the scrap copper raw materials is overcome.

The utility model relates to a copper anode plate mold clamping device which is installed on a disc casting machine and comprises first clamping assemblies, and the first clamping assemblies are arranged between adjacent molds on the disc casting machine. The first clamping assembly comprises a first screw rod and a second clamping block, and the first screw rod is arranged between two adjacent molds of the disc casting machine; the second clamping block is arranged on the first screw rod in a sleeving manner; the two sides of the second clamping block are each provided with two clamping jaws. Reinforcing ribs are arranged on the two sides of the mold; the two clamping jaws are placed on the reinforcing ribs on the adjacent sides of the two dies respectively. The reinforcing ribs extend from the mold lugs to the ends away from the mold lugs, so that the stress condition of the clamping jaws on the middle part of the mold can be improved, and the deformation of the copper anode mold is prevented; and the bottom end of the mold is strengthened and fixed through the second clamping block, so that mold deformation is further avoided, the production cost is effectively reduced, and the qualified rate of finished cathode copper is increased.

The invention discloses a method for recycling precipitation residues produced in the copper anode electrolytic refining process, and relates to the technical field of copper anode electrolytic refining. According to the method, the precipitation slag containing arsenic, tin, nickel, antimony and copper is treated, the physically entrained electrolyte is removed through water washing, most of copper, tin, antimony and the like are separated through a simple and low-cost flotation process, the obtained flotation copper concentrate is subjected to alkali liquor leaching to remove arsenic, antimony and tin, and the flotation effect is good. The leaching liquid is subjected to oxidative hydrolysis to remove antimony, and then calcium stannate slag and calcium arsenate slag are obtained through fractional precipitation of lime. The recycling method provided by the invention is low in cost, and resource utilization of arsenic, tin, antimony, nickel and copper can be realized.

This invention discloses a method for pre-separating oxides and release agents from the surface of copper anodes and a method for resource utilization of the slag. The method involves circulating a sulfuric acid solution into a continuous pre-separation reaction tank; immersing the copper anode body in the sulfuric acid solution, introducing gas, controlling the initial concentration of the sulfuric acid solution, heating to a certain temperature, reacting for a certain time, and after the reaction is complete, hoisting the copper anode from the mixture for electrolytic refining; and filtering the mixture to obtain a pre-separated liquid and copper-barium mixed slag. This invention, by pre-separating oxides and release agents from the surface of the copper anode, can significantly reduce the occurrence of anode passivation, lower the cell voltage during subsequent copper electrolytic refining, reduce electrolytic energy consumption, improve the quality of copper anode sludge, and reduce the cost of copper anode sludge treatment. The copper-barium mixed slag from the process can be subjected to a two-stage pressure leaching using waste acid from the secondary final liquid produced in the electrolyte purification process, fully recovering copper while obtaining reusable barium sulfate, effectively improving resource utilization efficiency.

The application discloses a method for recovering tin from silver separation residue by using sulfur concentrate, and comprises the following steps: S1, uniformly mixing copper anode slime silver separation residue, an additive and sulfur concentrate to form spherical materials; S2, roasting the spherical materials under a protective atmosphere at a temperature of 300-800 DEG C to generate soluble sulfur-tin compounds, and obtaining roasting residue; S3, grinding the roasting residue into roasting residue powder, mixing the roasting residue powder with alkali metal salt water to carry out tin leaching reaction in an alkaline environment, and obtaining tin leaching liquid; and S4, mixing the tin leaching liquid, an oxidizing agent and a calcium-containing reagent to carry out tin precipitation reaction, filtering and drying, and obtaining tin concentrate. The application has the advantages of low cost.

The utility model relates to the field of electrolytic copper production and processing, and provides a copper anode plate anode shaping unit which structurally comprises a conveying device used for conveying an anode plate; the conveying device is provided with a conveying piece for driving the anode plate to do horizontal linear motion and a lifting piece for driving the anode plate to do ascending and descending motion; the plate pressing device is arranged on the conveying device and is used for flattening the anode plate; the milling device is arranged on one side of the plate pressing device and is used for milling the side surface of the anode plate; the grinding device is arranged on the side, away from the plate pressing device, of the milling device and used for grinding the surface of the anode plate. The copper anode plate anode shaping unit provided by the utility model can clean foreign matters such as burrs and bulges on the surface of an anode plate, so that the electrolysis quality is improved.

The present application belongs to the field of copper electrolytic refining, and relates to a method for inhibiting copper powder generation in the process of low-arsenic copper anode electrolytic refining. + The method inhibits the generation of copper powder in the process of electrolytic refining by adding a copper powder inhibitor in the process of low-arsenic copper anode electrolytic refining, so that the disproportionation reaction occurs, thereby reducing the generation of copper powder in the process of low-arsenic copper anode electrolytic refining, the content of copper powder in anode slime is reduced from 68.3% to 29.8%, the subsequent treatment steps of anode slime are simplified, the cathode current efficiency is increased from 87% to 93%, and the surface quality of cathode copper is significantly improved, and the qualified rate of A-grade copper is increased from 80% to 95%.

A metal coating is electrodeposited onto an inner surface of a pipe wall by conveying a pig along the pipe and driving a current through an electrolyte fluid body extending from an electrode of the pig to the pipe wall. In order to deposit an internal coating of copper, the pig supports the copper anode and the electrolyte fluid is copper sulfate. The electrodeposition process may be performed in situ on a steel pipe after the pipe has delivered hydrocarbons, and may deliver hydrogen along the pipe after the pipe. The internal coating mitigates the risk of hydrogen atoms migrating into the tube wall and thereby causing steel embrittlement.

This invention discloses an aqueous copper-ion battery electrolyte, its preparation method, and the copper-ion battery itself. The electrolyte comprises a copper salt, a solvent, and a copper halide salt additive. The copper salt is copper sulfate, and the solvent is deionized water. The concentration of the copper salt in the electrolyte is 0.5–1.5 mol / L. The copper halide salt additive is selected from one or more of copper fluoride, copper chloride, and copper bromide, and the total concentration of the copper halide salt additive in the electrolyte is 0.005–0.2 mol / L. When the electrolyte of this invention is used in an aqueous copper-ion battery, the halide ions in the copper halide salt additive can preferentially adsorb onto the surface of the metallic copper anode, inducing uniform copper deposition and inhibiting the formation of by-products. This significantly improves the coulombic efficiency and cycle stability of the aqueous copper-ion battery. Furthermore, the electrolyte preparation process is simple, low-cost, and environmentally friendly, making it suitable for large-scale energy storage scenarios.

The application discloses a preparation process and application of a polyamine-based EDTA leaching agent for lead removal from copper anode slime. A chelating system containing strong coordination groups of -NH-, -COOH and -SO3- is formed by the synergic complexing of EDTA-2Na after the double modification of carboxymethylation and sulfomethylation of a polyamine skeleton as a mother nucleus. The leaching agent is used for selective leaching of lead in copper anode slime, and under the conditions of a solid-liquid ratio of 1:10-20, 45-60 DEG C, and pH 5.5-7.0, the lead leaching rate is stably above 94.8%, and the silver retention rate is above 99.9%. The leaching agent is regenerated by lead precipitation with sodium carbonate, and the lead leaching rate is kept above 92.1% after 10 cycles. The process is mild and environmentally friendly, and the equipment is simple, and is suitable for industrial production.

The utility model discloses a copper tile and electrode corrugated pipe jacking structure in an electric furnace, which is characterized in that an end flange is connected with a limiting guide assembly, and the limiting guide assembly comprises an inner limiting piece connected to the center of the end flange and an outer limiting piece sleeved on the inner limiting piece; the inner limiting piece comprises a cylinder connected to the end flange and a first limiting plate located at the other end of the cylinder, the outer limiting piece comprises a round sleeve located on the outer ring of the cylinder, a second limiting plate connected to one end of the round sleeve and a connecting plate located at the other end of the round sleeve, and an elastic piece arranged on the cylinder in a sleeving mode is arranged between the cylinder and the round sleeve. The end flange is provided with an end flange sleeve which is slidably sleeved with the round sleeve, a corrugated flexible pipe is arranged on the outer side of the end flange sleeve, one end of the corrugated flexible pipe is connected to the connecting plate, and the other end of the corrugated flexible pipe is connected to the end flange; one side of the connecting plate away from the end flange is connected with a top plate. According to the utility model, the elastic piece is arranged to realize self-resetting, so that the problem that the corrugated pipe cannot be reset after high-temperature plastic deformation is prevented.

A carbon dioxide capture and absorbent purification system and method coupled with metal refining. The system comprises an absorption module (A) having an absorbent, a regeneration module (B) having an electro-desorption unit (2) and a gas-liquid separation unit (3), and a purification module (C), wherein the absorption module (A) is in communication with flue gas; the regeneration module (B) and the purification module (C) are selectively in communication with the absorption module (A) so as to selectively regenerate and purify the absorbent; the electro-desorption unit (2) comprises a first anode chamber (21) with a crude copper anode, and a first cathode chamber (22) with a refined copper cathode, the first anode chamber being separated from the first cathode chamber; a first outlet of the absorption module (A) is in communication with an inlet of the first anode chamber (21), and a second outlet of the absorption module (A) is in communication with a purified-gas pipe (42); an inlet of the gas-liquid separation unit (3) is in communication with the first anode chamber (21), a first outlet of the gas-liquid separation unit (3) is in communication with the first cathode chamber (22), and a second outlet of the gas-liquid separation unit (3) is in communication with a gas discharge pipe; and an outlet of the first cathode chamber (22) is in communication with the second inlet of the absorption module (A). The method comprises: conveying flue gas containing carbon dioxide to the absorption module (A) to absorb the carbon dioxide from the flue gas, so as to obtain an absorption liquid and a purified gas; conveying the absorption liquid into the first anode chamber (21) of the electro-desorption unit (2), and desorbing the absorption liquid to obtain a gas-liquid mixture; performing a gas-liquid separation treatment on the gas-liquid mixture by means of the gas-liquid separation unit (3) to obtain carbon dioxide gas and a separated liquid; conveying the separated liquid into the first cathode chamber (22) of the electro-desorption unit (2) to obtain refined copper and an absorbent; and conveying the absorbent from the first cathode chamber (22) into the absorption module (A).

The utility model discloses an electrolyzer for stable copper removal, which comprises a pair of electrolytic baths, the baths of the electrolytic baths are arranged oppositely, a plurality of anode slots and a plurality of cathode slots are arranged in the electrolytic baths, and the anode slots and the cathode slots are arranged alternately; a copper anode plate or an insoluble lead anode plate can be inserted into the anode slot, and a stainless steel cathode plate is inserted into the cathode slot. The copper anode plate and the lead-insoluble anode plate are inserted into the electrolytic bath at the same time, the copper anode plate performs electrolysis to increase the copper content in the electrolyte, and the lead-insoluble anode plate performs copper electrodeposition to separate out copper ions in the electrolyte, so that the balance of the copper content in the electrolyte is kept; two functions are achieved through the same electrolytic cell, and it is avoided that an electro-deposition copper device is independently built; meanwhile, the production efficiency is improved.

The application discloses a method for recovering rhodium and iridium from a tellurium displacement solution of copper anode slime, and the rhodium and iridium in the tellurium displacement solution of the copper anode slime is recovered by sequentially adopting the methods of evaporation and concentration, oxalic acid nickel-copper precipitation, chlorine hydrolysis of the nickel-copper precipitation solution and the like. By adopting the method, the rhodium and iridium in the copper anode slime can be recovered completely, the direct recovery rate of the rhodium and iridium can reach more than 95%, and about 100m 3 of the tellurium displacement solution is generated per day, 20-30 Kg of the precious metal rhodium and iridium can be recovered per year, and good economic benefits are obtained, and the method can be popularized and applied to the recovery of various rhodium and iridium-containing materials.