15 results about "Copper anode" patented technology

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.

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.

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 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.

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 present application relates to copper anode slime leaching technical field, specifically to a kind of copper anode slime copper, antimony and rare and precious metal high-efficiency recovery method, including according to batch to mixed equipment input quantitative copper anode slime and deionized water, and slurry is prepared according to certain liquid-solid mass ratio, and uniform suspension slurry is obtained;Sulfuric acid and sodium chloride are added to the uniform suspension slurry, heated to preset temperature, and reacted for a certain time to obtain reaction material;The reaction material is filtered and washed, and sodium hydroxide is added to the filtrate to separate and recover antimony and bismuth, the filter residue is dried and weighed, and the content of each element is analyzed, the method first prepares copper anode slime suspension, and by adjusting the content of added sulfuric acid, sodium chloride and sodium hydroxide, the pH value is adjusted, and then antimony and bismuth are precipitated respectively, the leaching rate of antimony and bismuth reaches 71% and 90% respectively, solves the problem that the existing method for recovering antimony and bismuth from copper-depleted anode slime cannot achieve satisfactory leaching effect.

The application discloses a method for preparing high-strength and high-conductivity copper-silver alloy foil by cyanide-free electroplating. The method adopts a cyanide-free complexing agent system, which comprises pyrophosphate, organic phosphoric acid, iodide, conductive salt and pH regulator, and is matched with copper sulfate and silver nitrate to prepare an electroplating solution. The high-strength and high-conductivity copper-silver alloy foil is prepared by a direct current electroplating process under the condition of a pure titanium cathode and a pure copper anode. The method does not need to use cyanide, is environmentally friendly and safe, and the prepared copper-silver alloy foil has excellent comprehensive performance, i.e. the tensile strength is greater than or equal to 850 mPa, the electrical conductivity is greater than or equal to 65% IACS, the silver content is less than or equal to 10%, the thickness is 6-12 microns, the roughness Ra value of the rough surface is less than or equal to 4.5 microns, and the Rz value is less than or equal to 2.6 microns. The application overcomes the technical problem that traditional copper foils are difficult to have high strength and high conductivity at the same time, and is suitable for high-end application fields such as electronic interconnection, flexible circuit and lithium ion battery current collector.

This utility model relates to the field of rotary kiln technology in pyrometallurgical processes, and specifically discloses a T-type anti-corrosion copper anode mud roasting rotary kiln gas guide pipe, including a T-type rotary kiln gas guide pipe, an anti-corrosion lining, a cooling pool, and cooling water pipes. The gap between the T-type rotary kiln gas guide pipe and the anti-corrosion lining is set as a cooling water channel. The cooling pool is installed at the top of the T-type rotary kiln gas guide pipe. The left and right ends of the T-type rotary kiln gas guide pipe are respectively provided with a first gas guide pipe outlet and a second gas guide pipe outlet. The cooling water pipes are arranged around the T-type rotary kiln gas guide pipe. The T-type rotary kiln gas guide pipe includes a horizontal T-type gas guide pipe and a vertical T-type gas guide pipe. Both the horizontal and vertical T-type gas guide pipes are cylindrical and are welded together. This utility model provides a T-type anti-corrosion copper anode mud roasting rotary kiln gas guide pipe. This equipment has low operating costs, achieves high temperature resistance at low cost, and solves the problem that the acid-resistant lining used is not resistant to high temperatures.

This application provides a method for determining the gold content in high-impurity copper anode slime, belonging to the field of precious metal analysis and detection technology. The method includes: digesting the high-impurity copper anode slime sample with aqua regia to obtain a gold-containing digestion solution; extracting the gold-containing digestion solution using MIBK to obtain a gold-loaded MIBK organic phase; mixing the gold-loaded MIBK organic phase with a fire assay mixture and heating at low temperature to completely volatilize the MIBK, leaving the gold in elemental form in the mixture; then sequentially performing fire assay melting, ash blowing, and gold separation steps; finally, calculating the gold content by weighing. This application directly couples "selective impurity removal by wet extraction" with "efficient enrichment by fire assay," eliminating interference from impurities such as copper, selenium, and tellurium on gold determination at the source. It has the advantages of short operation process, low detection cost, high accuracy and stability, meeting the needs for accurate, efficient, and batch determination of gold content in high-impurity copper anode slime.

A carbon dioxide (CO2) electrocatalytic material from copper anode slime and a preparation method thereof are provided. The raw materials of the CO2 electrocatalytic material from copper anode slime of the present disclosure include the copper anode slime, a leaching agent, a metal ion stabilizer, a carbon-containing support, a solid acid promoter, and a reducing agent. The preparation method includes: subjecting the copper anode slime to oxidative leaching using the leaching agent to obtain a leachate containing metal components; then adding the metal ion stabilizer, the carbon-containing support, the solid acid promoter, and the reducing agent to the leachate; stirring; and subsequently performing centrifugal washing and vacuum drying to obtain the CO2 electrocatalytic material from copper anode slime.

This invention discloses a method for extracting tellurium from acid leaching solutions of copper anode mud based on a disproportionation reaction, belonging to the field of hydrometallurgical technology. The method involves preheating the acidic leaching solution of copper anode mud; under stirring conditions, elemental tellurium is added to the hot leaching solution, wherein the elemental tellurium reacts with Te in the leaching solution. 6+ The molar ratio of tellurium to impurities is 1.0–1.5:1; the reaction temperature is maintained at 70–95 °C, and the reaction is stirred for 2–6 hours; after the reaction is completed, separation and impurity removal are performed to obtain tellurium product. This method, from the submergence precipitation reaction to the washing end, forms a short-process self-purification separation path that does not require full-process deacidification, external heterogeneous reducing agents, and a single product morphology. Under the selected process conditions, efficient separation and directional transformation of tellurium and impurities are achieved, with a direct tellurium recovery rate of over 95%, resulting in significant economic benefits and great significance for the efficient and large-scale extraction of tellurium resources.

The present application relates to a kind of pretreatment methods for reducing copper content in copper anode slime.The pretreatment method for reducing copper content in copper anode slime includes the following steps, step S1, copper anode slime and acidic leaching agent are added to the reaction vessel, the acidity of the leaching agent is adjusted to the range suitable for the selective dissolution of copper while inhibiting the dissolution of rare and precious metals;Step S2, under stirring conditions, oxygen-containing gas is simultaneously introduced into the reaction vessel and heated, the reaction temperature is controlled in the range that promotes copper oxidation leaching while inhibiting the loss of rare and precious metals, and atmospheric leaching is carried out for a set time;Step S3, after leaching is completed, solid-liquid separation is carried out, and copper-containing leaching solution and copper-depleted anode slime are obtained;The turbid filtrate is backflowed and clarified in the early stage of separation;The pretreatment method for reducing copper content in copper anode slime effectively controls the weight and yield of copper anode slime while retaining rare and precious metal elements, and matches the copper anode slime processing capacity of rare and precious workshop.

This invention discloses a method for separating and recovering selenium and fixing arsenic in copper anode mud using vacuum roasting, comprising the following steps: a) crushing and screening the copper anode mud to obtain powder; b) uniformly mixing the obtained powder with an iron-based arsenic fixing agent to obtain mixture A; c) placing mixture A in a roasting furnace, then introducing a mixture of inert carrier gas and oxygen-containing gas, and maintaining the system absolute pressure at 1-20 kPa and oxygen partial pressure at 1%-10%, roasting at 400-750℃ for 0.5-4 hours to obtain roasting residue B with arsenic fixed in the form of ferric arsenate and selenium-containing flue gas C; d) passing the selenium-containing flue gas C into a sodium thiosulfate solution for absorption and reduction, and obtaining elemental selenium product D after filtration, washing, and drying; e) leaching the roasting residue B with dilute sulfuric acid to recover the valuable metals copper and silver therein. The above method has a short process flow, good selenium and arsenic separation effect, and can ensure environmental safety in the subsequent valuable metal recovery process.