38 results about "Copper slag" patented technology

The utility model relates to copper pipe processing technical field, and disclose a kind of high-power laser cutting copper pipe anti-perforation slag removal device, solve the problem that current high-power laser cutting is prone to perforation when being carried out to copper pipe, it includes mounting plate, the bottom of mounting plate is equipped with cutting mechanism, fixed mechanism is equipped on cutting mechanism, cutting mechanism includes the U type round pole fixed in the bottom of mounting plate, the outside of U type round pole is movably sleeved with lifting plate, cylinder is fixedly installed between lifting plate and mounting plate, the bottom of lifting plate is fixedly connected with U type plate, and the bottom of U type plate is fixedly installed with laser cutting head;The utility model can blow nitrogen to cutting point, it is convenient to blow away slag and cool incision, to inhibit the perforation caused by excessive ablation, and cooperate between suction frame, hose one, dust collector, connecting pipe, exhaust pipe and filter frame, to facilitate copper slag is extracted and filtered.

The utility model relates to recycling device technical field, concretely is a kind of copper slag recycling device for copper art processing, including box, support seat, apron and auxiliary mechanism, the support seat is arranged in the box bottom, the support seat is equipped with several, the box bottom center is equipped with discharge assembly, the apron is connected with the box by the auxiliary mechanism, the apron top is equipped with crushing assembly, the apron top one side is equipped with feeding assembly, the auxiliary mechanism includes sliding assembly, long plate, bolt, motor, connecting block, limit block, connecting rod and crushing knife, the sliding assembly is arranged in the box side, the long plate is connected with the sliding assembly by the bolt, the motor is set up on the long plate, the motor output end is connected with the connecting block center, a kind of copper slag recycling device for copper art processing of the utility model, solves the problem of the present equipment crushing effect poor.

The application discloses a low-carbon high-performance cement clinker and a preparation method thereof, and relates to the technical field of building materials, in particular to a low-carbon cement clinker and a preparation method thereof. The raw materials in the cement clinker include the following components in percentage by weight: 75-90% of raw material, 5-20% of steel slag and 2-8% of a conditioning material, wherein the conditioning material includes at least two of lead-zinc slag, copper slag, manganese slag and lithium slag. The lead-zinc slag in the conditioning material contains 0-5.5% of ZnO in percentage by weight; the copper slag contains 0-2.0% of CuO in percentage by weight; the manganese slag contains 0-7.0% of MnO2 in percentage by weight; and the lithium slag contains 0-3.0% of Li2O in percentage by weight. The application adds the conditioning material, ensures the content of zinc, copper, manganese or lithium in the cement clinker, realizes the purposes of stabilizing R-type tricalcium silicate and improving the strength of the cement clinker, does not add components such as fluorine and sulfur which pollute the environment, is environmentally-friendly, safe and reliable, and has a wide source of raw materials and strong applicability.

The utility model discloses a kind of residual pole copper residue transfer shuttles, comprising: carrier;Several L-shaped brackets are set on the carrier;Limiting cavity, several L-shaped brackets and the two side supporting plates set on the carrier are collectively enclosed to form limiting cavity.The utility model is simple in structure, limiting cavity is formed by being collectively enclosed by multiple L-shaped brackets and two side supporting plates, limiting of three sides in four sides of residual pole copper residue is realized, so that effectively prevent the phenomenon of residual pole copper residue falling in the process of sudden braking or sudden stop, in addition, the design of sealing plate can prevent residual pole copper residue from falling inside equipment, damage equipment.

The present application relates to steel and non-ferrous smelting slag comprehensive recovery and iron-making resource utilization comprehensive utilization technical field, disclose a kind of copper slag efficient iron-making method based on magnetic separation pretreatment, comprising: to molten iron-silicate base waste slag input by calcium carbide, sodium fluoride and phosphorus component consisting of conditioning agent, using sodium fluoride to build liquid diffusion field exposure reduction interface, induce calcium carbide and iron silicate in situ reduction to generate metal iron core;Heat treatment promotes iron core polymerization growth;Gradient cooling, using phosphorus component induces silicate matrix crystal transformation to generate expansion stress and break matrix;Grinding powder and weak magnetic separation, extract magnetic enrichment product, the present application breaks iron-oxygen-silicon chemical bond, realizes the conversion of combined state iron to independent metal state, achieves iron and gangue phase decoupling, using endogenous stress induction self-pulverization, reduce grinding energy consumption, output high-grade iron powder and simultaneously remove sulfur zinc impurities.

The application discloses a kind of based on the fixed-point addition of reducing agent of ladle and its device, including the following steps: a. phase analysis;B. calculate the amount of reducing agent;C. input reducing agent;D. sampling and detection;E. effect evaluation;F. fixed-point addition device is fixed-point fixed-speed input reducing agent.The application can add solid reducing agent to the ladle slag drop point by fixed-point addition device, ensure that reducing agent and copper slag are fully contacted and mixed, by adding reducing agent in the ladle, the problem of copper alloy impregnation furnace bottom brick joint caused by adding in the furnace can be avoided, which leads to the arching of brick body, significantly improve the stability of flash furnace operation, prolong the service life of equipment, reduce maintenance cost and unplanned shutdown risk, ensure production safety, and without large-scale modification of flash furnace body, overall operation is simple, stable and reliable, and has wide industrial application prospect.

This invention discloses a method for solidifying arsenic using copper slag. The method involves adding arsenic-containing substances to copper slag, mixing it thoroughly, adding a sulfuric acid solution with a mass concentration of 10-25%, stirring evenly at room temperature, molding, demolding, and curing to achieve the purpose of solidifying arsenic. This invention utilizes the chemical reaction between copper slag and sulfuric acid solution to harden the material, thereby generating strength. When used as a casting material, it not only has the characteristics of fast setting time, good stability, and good durability, but also has excellent adhesion, realizing the comprehensive utilization of industrial waste.

This invention relates to a method for selectively and stepwise extracting antimony and copper from precious silver alloys using temperature-controlled oxygen enrichment. The method includes: blowing the precious silver alloy at 700–800°C with a mixed gas containing 25%–30% oxygen for low-temperature oxygen enrichment blowing to produce antimony-oxygen powder; heating the blown alloy to 950–1000°C, adding an alkaline covering flux, and then blowing oxygen-enriched compressed air to oxidize copper and residual antimony into slag, obtaining a gold-silver enriched alloy; crushing and ball-milling the obtained copper slag, then leaching it using a sulfuric acid system with the addition of persulfate oxidant, followed by pressure filtration to obtain a leachate and leaching residue; electrowinning the leachate to produce black copper; and returning the leaching residue to the pyrometallurgical smelting system to recover gold and silver. This invention achieves efficient separation and recovery of silver, antimony, and copper from precious silver alloys through a short-process coupled process of "low-temperature oxygen enrichment for antimony removal – high-temperature oxygen enrichment for copper slag production – oxidative acid leaching for copper recovery," offering advantages such as high antimony ash grade, good copper slag enrichment, high copper leaching rate, and low precious metal loss.

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.

The application discloses a method for separating copper and arsenic in a high-nickel copper-arsenic solution and relates to the technical field of non-ferrous metal hydrometallurgy purification separation and impurity removal, solves the problems of incomplete separation of copper and arsenic in the high-nickel copper-arsenic solution and low valuable metal recovery rate, adopts hydrogen sulfide gas as a single sulfuration agent, realizes effective separation of copper and arsenic through a first-stage sulfuration copper removal, a second-stage sulfuration copper removal and a sulfuration arsenic removal procedure, processes second-stage sulfuration copper residue through a copper residue arsenic removal procedure, processes sulfuration arsenic residue through an arsenic residue nickel removal procedure, and sets up a material circulation system in which copper residue arsenic removal post-liquid enters the second-stage sulfuration copper removal procedure and arsenic residue nickel removal post-liquid enters the sulfuration arsenic removal procedure, so that the method has the advantages of simple technological process, good separation effect, high recovery rate, low operation cost and the like.

This invention discloses a copper flash blowing slag dewatering device, including a base plate, a dewatering chamber mounted on the upper part of the base plate, and further including: a storage unit; a top material unit, including an extrusion component for pressing and dewatering the copper slag sealed by the sealing component, a water storage component located below the extrusion component for collecting the dewatered water, and a material control component located above the extrusion component for controlling the copper slag entering and exiting the dewatering area. By using a lifting block to rapidly lower the top plate until it separates from the baffle plate, the dewatered copper slag slides down the top plate under its own gravity and inertia to the bottom of the dewatering chamber and is discharged through the outlet. Then, the next cycle of feeding into the dewatering area begins, thus achieving automatic continuous dewatering and feeding / discharging. The entire process requires no manual intervention and has high efficiency.

This invention discloses a method for co-recovering valuable metals from waste batteries using waste silicon molybdenum rods and copper slag, belonging to the fields of industrial solid waste resource utilization and metallurgical engineering. The method includes: mixing copper slag powder, waste silicon molybdenum rod powder, waste ternary lithium battery cathode powder, and additives; smelting at high temperature under a protective atmosphere; using silicon in the waste silicon molybdenum rods as a reducing agent to reduce metal oxides in the materials in one step; and utilizing the dual functions of copper slag: firstly, as a slag-forming agent to regulate the slag system; and secondly, the metallic iron generated after the reduction of iron oxides in the copper slag acts as a collector, efficiently enriching nickel and cobalt reduced from waste batteries and molybdenum released from silicon molybdenum rods to form high-value multi-element alloys. This invention treats waste with waste, using waste silicon molybdenum rods to replace coke, thus avoiding CO2 emissions at the source; co-processing three typical solid wastes; a simple process; high metal recovery rate; low cost; and environmental friendliness, showing good prospects for industrial application.

This invention belongs to the field of hydrometallurgical technology, and specifically relates to a method for the tiered directional separation of copper, nickel, and iron from nickel leaching tailings. This method targets high-copper and high-nickel nickel leaching tailings. First, the tailings are activated at room temperature with an acidic nickel-containing solution within the nickel smelting system. Then, pressure leaching is performed to achieve highly selective nickel leaching, yielding high-grade copper slag and a leachate containing nickel and iron. Finally, the leachate is subjected to pressure iron removal to obtain iron concentrate and a pure nickel sulfate solution. This invention overcomes the shortcomings of existing technologies in handling high-nickel materials through a unique three-stage process of "activation treatment – ​​selective nickel leaching – pressure iron removal," achieving efficient separation and full resource recovery of copper, nickel, and iron. Furthermore, the process is closely coupled with the main smelting system, resulting in low cost and environmental friendliness.

This invention proposes a high-performance concrete with copper slag and its preparation method, belonging to the technical field of concrete materials, to solve the technical problems of copper slag accumulation, low solid waste utilization rate, and high carbon emissions and costs in the cement industry. The high-performance concrete with copper slag of this invention comprises the following raw materials in parts by weight: 250-450 parts cement, 170-190 parts water, 750-800 parts sand, 930-950 parts aggregate, 45-150 parts copper slag, 15-100 parts mineral admixtures, and 1.5-5 parts activity activator. This concrete uses copper slag combined with other mineral admixtures. By controlling the amount and specific surface area of ​​copper slag, and introducing sodium sulfate as a copper slag activity activator, the early hydration reaction rate of copper slag and the mechanical properties of the concrete are effectively improved. Its compressive strength reaches 44-45 MPa and its splitting tensile strength reaches 4.1-4.5 MPa after 28 days of standard curing. This invention significantly reduces cement usage and production costs, and substantially reduces carbon emissions, while ensuring excellent mechanical properties of concrete. It provides a new approach for the high-value-added resource utilization of industrial solid wastes such as copper slag and fly ash. Moreover, the preparation process is simple and suitable for large-scale promotion and application.

A high-silicon copper-containing calcine leaching residue resource utilization method, comprising: mixing high-silicon copper-containing calcine leaching residue with solid strong alkali, roasting at 140-160 DEG C, obtaining roasting alkali residue; the roasting alkali residue is added with calcium oxide and water to carry out concentrated alkali leaching, solid-liquid separation, obtaining alkali leaching residue and alkali leaching liquid; the alkali leaching liquid is added with a sulfidation agent to precipitate copper, obtaining copper precipitation residue and copper precipitation liquid; the copper precipitation liquid is added with calcium oxide to remove silicon, obtaining silicon precipitation residue and silicon removal liquid; copper is enriched in the copper precipitation residue; the "low-temperature roasting + concentrated alkali leaching" process of the application can effectively destroy the stable structure of high-silicon copper-containing calcine leaching residue, so that the copper wrapped by silicon is exposed, the chemical reaction of the high-silicon copper-containing calcine leaching residue leaching process is significantly strengthened, and the copper leaching rate can be greatly improved; the roasting temperature of the application is only 140-160 DEG C, which is much lower than the general alkali roasting temperature, the energy consumption is lower, the possible high-temperature injury is reduced, and the safety is higher.

The application relates to the technical field of metal recovery, and particularly relates to a yellow slag short-process treatment method. The method comprises the following steps: S1, crushing and screening yellow slag to obtain fine particle components and coarse particle components; S2, mixing the fine particle components with concentrated sulfuric acid and performing roasting treatment to obtain first roasting materials; S3, mixing the first roasting materials with dilute sulfuric acid and performing leaching reaction, and then performing solid-liquid separation to obtain first leaching residues and first leaching solution; and S4, mixing the first leaching solution with the coarse particle components and performing reduction displacement reaction, and then performing solid-liquid separation to obtain copper-rich residues and second leaching solution, wherein the copper-rich residues are returned to a copper smelting system, and the second leaching solution is concentrated to obtain an iron-containing byproduct. The scheme provided by the application realizes efficient enrichment of copper through a coupling process of a fire method and a wet method, the obtained copper-rich residues can be sent to an existing copper converter smelting system for subsequent disposal, and the scheme has the advantages of strong process compatibility and low operation cost.

The present application relates to the technical field of printed circuit board, and particularly relates to a method and system for cooperatively inhibiting copper wire copper slag in PCB electroplating. The method comprises: performing short-time pre-deposition electroplating in the initial stage of PCB substrate electroplating to form a uniform initial deposition interface on the substrate surface; in the pre-deposition electroplating process, acquiring current values flowing through different regions of the substrate through a current acquisition unit arranged on the cathode conductive path, thereby constructing a current density spatial distribution and identifying abnormal current density regions; and interrupting the electroplating process when the abnormal current density regions meet preset conditions; during the interruption of electroplating, performing power-off standing treatment on the PCB substrate, and in the standing process, continuously acquiring local current density distribution data on the PCB substrate surface and judging whether it meets uniformity judgment conditions. The present application realizes accurate inhibition and deposition uniformization of copper wire copper slag in PCB electroplating through dynamic monitoring based on local current density and power-off standing.

An apparatus configured to operate a process for the atomisation of a molten calciferous material, the apparatus comprising; a reservoir 302 for containing a molten calciferous material 301 comprising an outlet 303 to produce at least one molten calciferous stream 307; and means for directing at least one fluid stream 305 at the molten calciferous stream 307 such that the fluid stream 305 impinges the molten calciferous stream at an angle 306 effective to atomise the molten calciferous stream to produce atomised particulate material 308. The molten calciferous material feedstock may be steel or copper slag, the steel slag may be obtained from an electric arc furnace, basic oxygen furnace, a blast furnace, or any other conventional steelmaking facility. The fluid stream may comprise streams on opposite sides of the molten stream, and may be selected from water, oil, gas, or a compatible mixture thereof. Both a system for the large-scale atomisation of molten calciferous material comprising a multiplicity of apparatus’, and a process for atomising a molten calciferous material, are defined. An atomised particulate material produced by the apparatus, system or process is defined, as is the use of the atomised particulate material as a supplementary cementitious material (SCM). Figure 3

The application discloses a copper residue-based amorphous composite material, which is prepared by the following steps: crushing and screening dried copper residue, calcining the screened copper residue at 450-550 DEG C, mixing the calcined copper residue, manganese salt and water, adding potassium permanganate solution into the mixture, uniformly mixing the mixture, heating the mixture in a water bath at 45-55 DEG C, and separating the reaction product into solid and liquid, and then washing, drying and grinding the solid to obtain the copper residue-based amorphous composite material; the material has the advantages of high specific surface area, many reaction active sites, good oxidation and adsorption performance, high metal atom utilization rate and stable structure, and can be widely applied to oxidizing and adsorbing organic arsenic; and the adsorption removal effect is good; and the application realizes resource utilization of solid waste and has great application prospect in the field of environment.

This invention relates to the field of solidified water-based drilling mud technology, specifically a method for solidifying water-based drilling mud using an alkali-activated copper slag-based cementitious material based on a pre-reaction strategy. The method includes the following steps: S1. Mixing copper slag and granulated fly ash blast furnace slag for 3-5 minutes to obtain a precursor mixture; S2. Adding a modifier / activator to the precursor mixture and stirring for 3-5 minutes, allowing it to stand for pre-reaction to obtain a cementitious material; S3. Mixing the cementitious material with water-based drilling mud for 5-8 minutes and pouring it into a mold, followed by standard curing to complete the solidification of the water-based drilling mud. This invention significantly improves the alkali-activated reaction efficiency and the mechanical properties of the solidified body through the synergistic effect of the modifier / activator, metal ion modifier, and auxiliary modifier. It achieves spatiotemporal decoupling of the alkali-activated reaction process from the mud interference environment, effectively overcoming fundamental defects in traditional processes such as activator dilution, particle shielding, and reaction path interference.

This invention relates to the field of metallurgy and the utilization of hot molten copper slag, specifically to an externally fed slag mixing chute, comprising: a trough body with an internal cavity; a slag inlet located at the first end of the trough body; a slag outlet located at the second end of the trough body, the slag inlet, the cavity, and the slag outlet being interconnected; a feeding hopper disposed above the trough body and communicating with the cavity; a diversion and stirring component disposed inside the cavity and connected to the bottom wall of the trough body, and disposed between the feeding hopper and the slag outlet; and a heating device disposed outside the trough body; the feeding hopper comprising: a feeding section disposed above the trough body; and a homogenizing section disposed inside the cavity, communicating with the feeding section, the homogenizing section being conical, with the upper conical surface facing the slag inlet and the lower conical surface facing the slag outlet. This invention's slag mixing chute achieves efficient mixing and continuous processing of copper slag, rapidly changing the slag profile of the molten copper slag, converting acidic slag into alkaline slag, and realizing efficient utilization of waste heat.

The application discloses a recycling furnace capable of purifying waste gas and a recycling method thereof, and belongs to the technical field of copper slag recycling, comprising a supporting seat, an outer cylinder rotatably arranged on the inner side of the supporting seat, and a shaft on the side surface of the outer cylinder being connected with a motor through a belt pulley mechanism; further comprising: an inner cylinder rotatably arranged in the outer cylinder, a stirring assembly arranged in the inner cylinder of the outer cylinder, the stirring assembly being used for stirring workpieces to improve the melting speed, and a smoke removing mechanism arranged outside the outer cylinder and used for sucking and removing waste gas generated when the workpieces in the inner cylinder are melted. The recycling furnace capable of purifying waste gas and the recycling method thereof realize efficient recycling of molybdenum resources in copper smelting slag, produce new molybdenum-containing metal materials with high value, realize efficient recycling of molybdenum resources in copper smelting slag, improve the resource utilization rate, reduce environmental pollution, and have good economic and social benefits.

The application discloses a method for cooperatively recovering iron powder and copper sulfide concentrate from copper slag flotation tailings, and belongs to the technical field of metallurgical waste residue resource utilization. The copper slag flotation tailings are finely ground; an alkaline additive is added to adjust the alkalinity R to 0.6-1.2. The material is placed in air or oxygen-enriched air and kept at 650-900 DEG C for 20-60 min. Then the material is placed in a reducing atmosphere and kept at 700-1000 DEG C for 30-90 min. 0.5-3.0 wt% of a sulfidizing agent is added to the material; the material is kept at 900-1150 DEG C for 20-60 min in a weak reducing atmosphere. Then the material is annealed at 1050-1250 DEG C for 20-60 min; and then the material is cooled to room temperature in an inert atmosphere or a weak reducing atmosphere. The material is ground to separate the iron phase and copper sulfide, and low-intensity magnetic separation is performed to obtain magnetic iron powder and a non-magnetic mixture; the non-magnetic mixture is subjected to sulfidation flotation at pH 8-11 to recover copper sulfide concentrate. Through the multi-step thermochemical process of alkalinity adjustment, pre-oxidation, selective reduction and sulfidation segregation, the method realizes deep separation of the iron powder and the copper sulfide concentrate with low energy consumption, high selectivity and no pollution.

A method for treating copper-arsenic slag includes the following steps: 1) preliminary screening and preliminary wet ball milling of the copper-arsenic slag; 2) addition of sodium chloride, employing a two-stage process to enhance the permeation system; 3) reaction of the filtered residue with dilute acid; 4) addition of acid to the slag, followed by the addition of an oxidant for further reaction; 5) centrifugation of the reacted liquid, and collection of the leachate; 6) addition of alkali solution to adjust the pH to 3-4, and filtration of the precipitate; 7) addition of hydrogen peroxide to the leachate after precipitate removal, adjusting the pH to 7-8, and filtration of the precipitate; 8) reaction of the filtered precipitate with dilute acid, and collection of the filtrate; 9) adjustment of the pH of the filtrate to above 12, addition of hydrogen peroxide for further reaction, and filtration of the precipitate; 10) calcination of the filtered residue to obtain the product. After treatment by this method, the arsenic content in the copper slag product is reduced to below 3.5%, while the copper content increases to above 80%, with a copper yield exceeding 50%.

Provided is a method for fire refining of a complex crude lead. The method includes subjecting the complex crude lead to condensation to obtain a low-copper lead and a copper dross I; subjecting the low-copper lead to crystallization to remove silver and bismuth to obtain a low-silver lead and a high-silver lead; subjecting the low-silver lead to deep copper removal with sulfur addition to obtain a copper-removed lead and a copper dross II; and subjecting the copper-removed lead to arsenic-antimony-tin removal by an alkali process to obtain a refined lead and an arsenic-antimony-tin slag.

The utility model relates to copper slag lead block content adding device technical field, specifically for a copper slag lead block content adding device, including the stirring tank, three supporting legs are fixedly installed to the lower surface of stirring tank, the lateral wall of stirring tank is equipped with and adds the structure, the structure adds including the feeding hole of setting in the lateral wall of stirring tank, the lateral wall fixedly connected with two locating blocks of stirring tank, the surface fixedly connected with guide rail of locating block, the lateral wall slidingly connected with mounting bracket of two guide rails, the inner side fixedly installed with the blanking tube of mounting bracket, the upper end fixedly installed with the supporting plate of stirring tank, the inner side rotationally connected with the pulley of supporting plate, the surface fixedly connected with the cotton rope of mounting bracket, the lateral wall slidingly connected with cotton rope and pulley. The utility model discloses through setting up the structure of adding, has facilitated the flexible addition work of lead block material in low position, has further improved the use performance of copper slag lead block content adding device.

The application belongs to the field of road engineering and building materials, and particularly relates to a method for preparing SBS modified asphalt mortar by modifying copper residue powder with a silane coupling agent.The application aims to solve the technical problems of traditional mineral powder resource shortage, poor direct utilization effect of copper residue, and insufficient interface compatibility of copper residue powder and SBS modified asphalt.The application uses silane coupling agent KH-550 to modify copper residue powder for SBS modified asphalt mortar, which can realize high-value utilization of solid waste copper residue powder, improve the comprehensive performance of SBS modified asphalt mortar, replace part of mineral powder, and meet the requirements of green low-carbon and circular economy development.The application has simple process, uniform modification, and can be industrialized production, can significantly improve the interface compatibility of copper residue powder and asphalt, improve the high-temperature anti-rutting, low-temperature anti-cracking and anti-fatigue performance of the mortar, realize high-value utilization of industrial solid waste, and is suitable for the field of road engineering.

This invention discloses a rapid flotation process for efficiently recovering coarse copper slag, comprising the following steps: (1) crushing and ball milling the copper slag, adding grinding aids and oxidants during grinding to obtain the slurry required for rapid flotation; (2) adding collectors and frothers for rapid flotation to obtain coarse copper sulfide; (3) adding modifiers, collectors and frothers to the remaining slurry for flotation, combining the roughing product and the coarse copper sulfide obtained by rapid flotation into copper concentrate; (4) continuing to add modifiers, collectors and frothers to the remaining roughing slurry for flotation, returning the middlings obtained by scavenging to the roughing operation, and filtering and drying the remaining slurry as tailings. This invention improves the liberation of copper slag and the physicochemical properties of the surface of copper-containing particles in the slag by adding grinding aids and oxidants. Rapid flotation can recover a portion of copper sulfide concentrate before roughing, increasing the recovery efficiency of fine copper particles in subsequent operations.

This invention discloses a copper slag modification and granulation system with real-time adjustable atmosphere and composition, comprising: a smelting furnace with an adjustable fume hood on top; an insulated chute for conveying the modified slag to the granulation section; a granulation device for dry centrifugal granulation of the modified slag; the adjustable fume hood having: an oxidizing gas interface for introducing oxidizing gas into the furnace; a reducing gas interface for introducing reducing gas into the furnace; a backup gas interface for introducing either oxidizing or reducing gas; an openable / closable observation / feeding port for observing the furnace state and / or adding modified materials to the furnace; and a flue gas outlet for discharging the flue gas generated in the furnace. This system integrates multiple gas interfaces and a feeding port on the adjustable fume hood of the smelting furnace, enabling active control of the slag's oxidation-reduction state and chemical composition during the slag holding stage, thereby optimizing the slag's properties and creating conditions for subsequent granulation processes.