1158 results about "Non-ferrous metal" patented technology

The present application belongs to the technical field of non-ferrous metal smelting, and provides a method for the vacuum directional vulcanization and arsenic removal of arsenic-containing solid waste from copper smelting. In the present application, black copper sludge and contaminated acid sulfide slag are mixed and then smelted under vacuum conditions to achieve the directional vulcanization of the black copper sludge by the contaminated acid sulfide slag, so as to generate Cu2S and metal As; and then the vulcanization product is subjected to vacuum distillation according to the difference of saturated vapor pressures, such that As is condensed in a condensation area in a vapor form; and Cu2S is not volatilized and left in residues, thereby achieving the separation of Cu2S and metal As. The present application achieves the recovery of arsenic from the black copper sludge and the contaminated acid sulfide slag, such that non-toxic metal arsenic having an economic value is obtained; in addition, the generated Cu2S can be directly returned to a copper blowing system, thereby achieving the comprehensive utilization of valuable elements. After the treatment by means of the method of the present application, the recovery rate of Cu2S is higher than 90%, and the purity is greater than 95%, thereby satisfying the purity standard of copper matte in copper blowing; and the direct recovery rate of condensed As is higher than 90%, and the purity is greater than 99.5%.

The invention belongs to the field of electrical electronics and advanced non-ferrous metal additive manufacturing, and particularly relates to a preparation method of a laser additive manufacturing copper alloy-tungsten copper composite electrical contact, which comprises the following steps of: preparing a nickel or nickel alloy coating on a copper alloy base material by adopting coaxial powder feeding laser cladding to serve as a middle layer, and then preparing a tungsten copper coating by laser cladding to obtain the copper alloy-tungsten copper composite electrical contact. The composite electrical contact is composed of a pure copper or copper alloy base material layer, a pure nickel or nickel alloy coating and a tungsten copper coating in sequence. The electrical contact obtained by the invention has relatively high electrical conductivity and thermal conductivity, and also has good arc ablation resistance; the copper alloy-tungsten copper electrical contact is prepared by adopting the laser cladding technology, so that the production cost can be effectively reduced, the production efficiency is improved, meanwhile, later maintenance and repair are facilitated, and the method is green and environment-friendly.

The invention relates to a laser welding method suitable for a manganese-copper diverter, which comprises the following steps of: respectively splicing and tightly attaching two non-ferrous metal strips to two sides of a middle metal strip, and after the to-be-welded surfaces of the non-ferrous metal strips and the middle metal strip are positioned on the same horizontal plane, welding the to-be-welded surfaces of the non-ferrous metal strips and the middle metal strip; a near-infrared laser beam and a blue laser beam which are coaxial form a red-blue composite laser beam, the red-blue composite laser beam is used for conducting laser welding along the splicing gap of the non-ferrous metal strip and the middle metal strip, and during laser welding, the inclination angle between the red-blue composite laser beam and the vertical face of the surface to be welded is larger than or equal to 7 degrees. A light spot formed by the near-infrared laser beam swings in a light spot formed by the blue light laser beam, a welding seam is formed at the splicing position of the non-ferrous metal strip and the middle metal strip and penetrates through the non-ferrous metal strip to form a bonding layer, laser welding can be adopted only, the welding seam quality of laser welding is improved, welding spatter is reduced, and material overheating is avoided; and the consistency of product quality and the high efficiency of production are both considered, the production cost is reduced, and batch production is achieved.

The invention relates to a slag performance regulation and control method for large-proportion collaborative smelting of multi-source lead-based solid waste in flash lead smelting, belongs to the technical field of non-ferrous metal smelting, and mainly solves the problem of collaborative regulation and control of the viscosity performance of slag by factors such as ZnO content, Al2O3 content, CaO / SiO2 mass ratio, alkalinity and the like of FeOx-CaO-SiO2-ZnO-PbO-Al2O3 system slag so as to realize low-carbon and safe smooth smelting. The method comprises the following steps: (1) reasonably controlling the contents of elements such as Zn and Al in a mixed material fed into a furnace and the addition amount of a CaO flux and a SiO2 flux, and starting smelting; (2) in the flash smelting process, the content of ZnO in the slag is controlled to be lower than 25 wt%, the content of Al2O3 in the slag is controlled to be lower than 6 wt%, the mass ratio interval of CaO / SiO2 is 0.30-0.50, the alkalinity interval is 1.8-2.3, and flash smelting and slag-lead separation are completed; and (3) normally discharging slag and lead. According to the method, in the production practice of flash lead smelting, the problem that slag and lead are difficult to separate due to collaborative smelting of large-proportion and multiple types of high-zinc and high-aluminum solid wastes can be solved, the safe, energy-saving and efficient lead smelting process is guaranteed, and the production capacity of the flash lead smelting furnace for treating the multi-source lead-based solid wastes is improved.

The present invention includes systems and methods for a continuous-wave (CW) radar system for detecting, geolocating, identifying, discriminating between, and mapping ferrous and non-ferrous metals in brackish and saltwater environments. The radar system (e.g., the CW radar system) generates multiple extremely low frequency (ELF) electromagnetic waves simultaneously and uses said waves to detect, locate, and classify objects of interest. These objects include all types of ferrous and non-ferrous metals, as well as changing material boundary layers (e.g., soil to water, sand to mud, rock to organic materials, water to air, etc.). The radar system (e.g., the CW radar system) is operable to detect objects of interest in near real time.

The invention discloses a heat-resistant aluminum rare earth alloy wire containing a two-phase nanostructure and a preparation method of the heat-resistant aluminum rare earth alloy wire, and belongs to the field of non-ferrous metal materials. According to the alloy, aluminum serves as a matrix, and the alloy further comprises, by mass, 0.005%-0.2% of Ce, 0.05%-0.25% of Er, 0.05%-0.25% of Yb, 0.1%-0.2% of Zr and 0.05%-0.2% of Fe. The alloy wire prepared by combining two-stage homogenization, hot extrusion and cold drawing processes contains an Al3 (RE, Zr) nano precipitated phase and a nanoscale Al13Fe4 dispersed phase, the inner layer of the Al3 (RE, Zr) nano precipitated phase is Al3RE, and the outer layer of the Al3 (RE, Zr) nano precipitated phase is Al3Zr; and the nanoscale Al13Fe4 dispersed phase is a nano precipitated phase formed by sequentially coating the outer layer of an Al13Fe4 phase with an Al3RE structure and an Al3Zr structure. The alloy provided by the invention has excellent strength, high-temperature service stability and conductivity.

The invention relates to the technical field of non-ferrous metal processing, and particularly provides a preparation method of a high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile. The preparation method of the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile comprises the following steps that S1, after alloy raw materials are subjected to smelting treatment and refining treatment, an ingot blank is obtained through casting treatment or spray forming treatment; s2, the ingot blank is subjected to homogenization treatment and extrusion treatment, and an extruded profile is obtained; and S3, the extruded profile is subjected to solid solution quenching treatment and two-stage aging treatment, and the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile is obtained. According to the invention, specific extrusion process parameters are adopted and a two-stage aging heat treatment system is combined, so that the preparation of the low-cost, low-density, high-strength and corrosion-resistant aluminum alloy profile is successfully realized.

The present invention discloses an independent conveying device for non-ferrous metal processing, which relates to the field related to non-ferrous metal processing, including a support frame, wherein a group of driving components are fixed at both the front and rear ends of the left end of the support frame; and further comprising: a group of supporting components are arranged at the outer position of the transmission component; the supporting component includes a group of guide rods fixed at the bottom position of the supporting component, and the matching arrangement of the matching mechanism realizes the angle adjustment of the magnetic pole plates arranged at the front and rear ends of the supporting component. The independent conveying device for non-ferrous metal processing is provided with a supporting plate, and the inclination direction of the supporting plate is arranged to generate gas inside the sealing accommodating cylinder, so that the gas acts on the gas transmission pipe and the inside of the matching mechanism, and the non-ferrous metal sheet can be limited and the waste chips on the top of the non-ferrous metal sheet can be adsorbed and cleaned, so that the non-ferrous metal sheet can be more effectively processed during transportation.

The invention discloses an ultralow-temperature high-toughness copper alloy material and a preparation method thereof, and belongs to the technical field of ultralow-temperature high-toughness non-ferrous metal materials. The material comprises the following components in percentage by mass: 15-25% of nickel (Ni); manganese (Mn): 2-6%; 2.5%-6.5% of aluminum (Al); 0.2-1.0% of phosphorus (P), and the balance of copper and inevitable impurities. The preparation method comprises the following steps: preparing materials (pure Cu, pure nickel and pure manganese), melting, preserving heat, cooling, melting Cu-P intermediate alloy and pure aluminum, preserving heat, casting and molding, forging, and carrying out solid solution aging heat treatment. Compared with the prior art, the invention has the following advantages: by adding strengthening elements such as aluminum, phosphorus, nickel and the like, the obtained material can still maintain high toughness at ultralow temperature, and is applicable to the fields of mechanical equipment, spaceflight, traffic and the like applied in extremely cold and ultralow temperature environments.

The invention relates to a method for extracting tungsten and molybdenum from low-grade tungsten-molybdenum ore, belongs to the technical field of non-ferrous metal hydrometallurgy, and solves the problems of harsh conditions, low extraction efficiency, high cost and environmental pollution when tungsten and molybdenum are extracted from low-grade tungsten-molybdenum ore in the prior art. The method comprises the following steps: leaching the low-grade tungsten-molybdenum ore by adopting sulfuric acid, and carrying out solid-liquid separation to obtain a leaching solution and leaching residues; extracting molybdenum from the leachate by adopting a cationic extraction agent to obtain tungsten-containing molybdenum extraction raffinate and a negative molybdenum organic phase; and extracting tungsten from the tungsten-containing molybdenum extraction raffinate by adopting a neutral extraction agent to obtain tungsten extraction raffinate and a negative tungsten organic phase. The method is carried out at normal temperature and normal pressure, the complexing characteristic of molybdenum to tungsten in the low-grade tungsten-molybdenum mixed ore under the acidic condition is ingeniously utilized, synergistic leaching of tungsten and molybdenum is achieved, the tungsten and molybdenum extraction efficiency is high, operation is easy and convenient, complexing agents such as phosphoric acid do not need to be added, and the leaching cost is greatly reduced; and the method is clean and environment-friendly, and development and utilization of low-grade tungsten-molybdenum ore are promoted.

The invention discloses a method for recovering nearly all elements in low-precious-metal zinc replacement powder, which belongs to the technical field of non-ferrous metal wet smelting, and comprises the following steps: preparing zinc replacement powder, oxidizing and leaching, extracting copper, preparing cuprous chloride, electrodepositing zinc in raffinate, extracting precious metal by using a gold extracting agent, extracting, reducing and smelting to prepare a gold ingot and a silver ingot, and dissolving by using sodium hydroxide. Preparing lead carbonate; carrying out oxidation acid leaching; replacing; and smelting bismuth. According to the technology for achieving recovery and high-value utilization of nearly all elements in the zinc replacement powder under the mild condition, the technology can be carried out at the normal temperature, the high-pressure condition does not need to be provided, the zinc replacement powder is leached through the acid solution, then various valuable metals are selectively extracted from the leaching solution, corresponding downstream products are prepared, and the method is suitable for industrial production. The method realizes value maximization, does not generate secondary pollution, does not introduce fluorine, has low requirements on equipment, is simple in process and easy to operate, and makes up for the defects of the zinc replacement powder treatment process in the prior art.

The invention belongs to the technical field of non-ferrous metal hydrometallurgy, and discloses a method for extracting valuable metal from laterite-nickel ore pickle liquor. According to the method, nickel and cobalt can be complexed with ammonia under the ammoniacal condition, and then carbonate is added to selectively separate manganese. For a nickel-cobalt-ammonia solution, an oxidizing agent is used for oxidizing a cobalt-ammonia solution, a divalent cobalt-ammonia complex is oxidized into a trivalent cobalt-ammonia complex, then nickel is masked, and liquid caustic soda is added, so that cobalt can be separated. The remaining nickel complex is oxidized and decomposed under the strong oxidation effect of the unmasking agent to obtain free nickel, then liquid caustic soda is added to separate nickel, and the cracked masking agent is left in the filtrate and can be recycled. The method is easy to operate, easy to industrialize, low in cost and free of environmental pollution, the valuable metal elements in the laterite-nickel ore hydrochloric acid normal-pressure pickle liquor can be extracted in a pure compound product mode, solid waste residues are not generated, valuable metal element resources are fully utilized, and large economic benefits can be generated.

The invention relates to the technical field of non-ferrous metal smelting flue gas treatment and resource utilization, and discloses a non-ferrous metal smelting multi-source flue gas efficient mixing and intelligent regulation and control method and system.The method comprises the steps that flue gas from different kilns enters a main flue through a multi-source flue gas branch regulation and control unit, and through rotational flow momentum, the multi-source flue gas enters the main flue; the basic consistency of each source flue gas structure is achieved; carrying out real-time evaluation on the mixed smoke on a key section; the multi-point sensor array continuously measures data and calculates a uniformity index to realize instant identification of flow field uniformity, time stability and local anomaly; based on measurement data, the intelligent control and operation optimization unit solves a comprehensive performance function in real time on a DCS / PLC platform. The system comprises a plurality of flue gas outlets, a top-blown furnace discharge outlet, a multi-source flue gas branch regulation and control unit and an annularly-collected flue gas total outlet. According to the method, the influence of inlet disturbance on the mixing quality is regulated and reduced from the source.

The invention relates to the technical field of non-ferrous metal smelting waste recycling, and discloses a non-ferrous metal smelting waste collecting and treating device which comprises a tank body, and a first pipe and a second pipe which are coaxial with the tank body are sequentially arranged in an inner cavity of the tank body from bottom to top; a feeding cavity gradually reduced from bottom to top is formed between the outer wall of the pipe I and the tank body, a distributing cavity gradually increased from bottom to top is formed between the outer wall of the pipe II and the tank body, a spiral piece is arranged in the feeding cavity, an air supply pipe is fixed at the upper end of the tank body, and the air outlet end of the air supply pipe faces the distributing cavity; a main discharging pipe is fixed to the lower end of the first pipe, an auxiliary pipe is fixed to the lower end of the main discharging pipe, an auxiliary discharging pipe is fixedly connected to the lower end of the tank body, a grinding cavity is formed between the lower portion of the inner circumferential face of the auxiliary discharging pipe and the lower portion of the outer circumferential face of the auxiliary pipe, and a discharging promoting mechanism is arranged between the auxiliary discharging pipe and the main discharging pipe; the effect of directly obtaining the aggregate and the slag ash at one time can be achieved, and air pollution caused by dust when the aggregate and the slag ash are prepared from the waste materials is reduced.

The invention discloses a method for removing iron impurities in regenerated aluminum alloy, and belongs to the field of non-ferrous metal regeneration, recovery and impurity removal. The method comprises the following steps: weighing an iron removal flux (25-45 wt.% of boron-containing potassium fluoride, 20-30 wt.% of sodium chloride and 20-35 wt.% of potassium chloride) according to the mass percentage, stirring, mixing and drying; according to the method, the aluminum scrap is put into the smelting furnace to be smelted, then the iron removal flux and the permanganate catalyst are added into the aluminum scrap melt, stirring and standing are carried out, the aluminum melt with the iron impurity element removed is obtained, the method does not affect the aluminum obtaining rate, meanwhile, the iron content is remarkably reduced, and the method is applied to aluminum ingots obtained through green regeneration smelting of the aluminum scrap and has the beneficial effects that the cost is low; the environment is not damaged and the steps are simple.

A reversible rolling production system for cold rough rolling of non-ferrous metal strips is characterized in that an on-line air cooling device is added in an original cold rough rolling production line of the non-ferrous metal strips, tail gas discharged by a full-oil recovery system is used for air cooling of the rolled strips, the temperature of rolled strip coils is reduced, and the problem that reversible rolling is not uniform due to thermal superposition of rolling of front and back passes is solved. The problem that the temperature after rolling reaches the non-ferrous metal phase transition temperature or is higher than the recrystallization temperature occurs, and reversible rolling of cold rough rolling of all non-ferrous metal strips is achieved; according to the system, auxiliary transportation equipment and operation which need to be matched with an original non-ferrous metal strip cold rough rolling production line are omitted, rolled strip coils do not need to be temporarily stored and cooled, the rolling production period is shortened, the occupied area of production is reduced, and the system has the advantages of being high in production efficiency and low in equipment investment; in addition, the tail gas discharged by the full oil recovery system is used for carrying out air cooling on the rolled strip, so that the environmental pollution caused by the tail gas discharged by the full oil recovery system to the atmosphere is also reduced.

The invention relates to the field of solder materials, and provides a non-ferrous metal solder for low-temperature brazing and application, the solder is composed of carbon-coated copper nanorods, tin-bismuth alloy-coated silver nanoparticles, 2-mercaptobenzimidazole, rosin resin, an organic active agent, a dispersing agent, ionic liquid, hydroxyethyl cellulose, indium nitrate and citric acid. The silver particles are of a core-shell structure and are coated with tin-bismuth alloy layers, and continuous carbon layers are formed on the surfaces of the copper nanorods, so that the conductivity and the interface stability of the solder are effectively improved. The non-ferrous metal solder with excellent conductivity, low melting point and good wettability is prepared through step-by-step mixing, hot press molding and low-temperature heat treatment processes, and is suitable for electronic device packaging, power device connection and flexible circuit interconnection, and the defects of existing solder in the aspects of low-temperature welding and high conductivity are overcome.

The utility model relates to a secondary rolling plug for rolling a seamless tube, which is characterized in that a pipe throwing section, a rounding section, a wall-reducing uniform integrated transformation section, a compression rotating rolling section, a contact biting section and a contact section are sequentially formed on a plug body from right to left; and the outer side surfaces of the pipe throwing section, the rounding section, the wall reduction uniform integrated transformation section, the compression rotating rolling section, the contact biting section and the contact section are all revolution surfaces taking the axis of the plug body as the axis. Through the design of the surface shape of the top body, the surface of a non-ferrous metal tube is not easily scratched, and the technical problems that the roll shape of a conventional three-high rolling mill cannot realize biting rotation, clamping in the rolling process and smooth tube throwing in the non-ferrous metal rolling process are solved; when the plug body outputs lubricating oil, large metal extension and extension coefficients are achieved, the compactness of metal material structures is improved, the problems of multiple inner surface defects and spiral traces in the core rod rolling process are solved, and the quality problems caused by inner pitted surfaces and secondary oxidation in the large extension process are solved through a self-lubricating system.

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 discloses a method for treating copper cobalt oxide ore, and belongs to the technical field of non-ferrous metal hydrometallurgy. The method comprises the following steps: carrying out critical leaching on the copper-cobalt oxide ore to obtain a leaching solution and leaching residues, returning the leaching residues to a wastewater and waste residue neutralization process, carrying out a sulfuration sectional copper-cobalt deposition process on the leaching solution to obtain two products of copper sulfide and cobalt sulfide, carrying out targeted adsorption cobalt recovery on the produced sulfurized solution, returning the desorbed solution to a critical leaching process, and carrying out secondary leaching on the desorbed solution. After adsorption, liquid enters a waste water and waste residue neutralization process, produced neutralization residues are piled up, and produced neutralization water is returned to a critical leaching process. The method sequentially comprises the key procedures of critical leaching, vulcanization segmented copper and cobalt deposition, targeted adsorption and waste water and waste residue neutralization. The process adopted by the invention has the advantages of short process flow, high recovery rate, zero discharge of wastewater and the like. Compared with a traditional process, the copper and cobalt leaching rates can reach 90% or above, and the cobalt recovery rate can be increased by 10% or above.

The utility model discloses an eddy current separator for metal, which relates to the technical field of metal scrap separation and comprises an eddy current separator body, multiple stages of magnetic rollers are fixedly arranged in the eddy current separator body, a conveyor belt is arranged among the multiple stages of magnetic rollers, and a motor for driving the magnetic rollers to move is arranged on the outer side of the eddy current separator body. The eddy current sorting machine body is internally provided with a first-stage material distributing structure for separating large-particle iron blocks and a second-stage material distributing structure for separating small-particle iron blocks, a sorting plate is fixed in the eddy current sorting machine body, and the sorting plate is arranged at an outlet of the conveying belt. And non-metal and large iron blocks attached to the conveying belt are separated, the non-metal and small iron blocks are separated by arranging a first-stage material separation structure and a second-stage material separation structure, and the iron blocks in raw waste materials are removed and separated.

The invention discloses a method for recovering platinum and palladium from high-cobalt nickel-containing carbonylation slag, and relates to the technical field of non-ferrous metal carbonylation metallurgy, the method comprises the following steps: S1, hydrogen reduction and activation; s2, feeding into a high-pressure carbonylation reactor; and S3, efficient carbonylation. According to the method, the carbonylation slag is subjected to hydrogen reduction activation treatment, nickel protoxide and cobalt oxide are changed into simple substance nickel, the simple substance nickel is fed into a carbonylation reactor for carbonylation under the protection of reducing gas or inert gas after activation treatment, 95% of Ni, 85% of Fe and 80% of Co are carbonylated to enter a gas phase after carbonylation, bonding of cobalt and a platinum solid solution is broken through carbonylation, and the nickel-cobalt-cobalt-cobalt-cobalt alloy is obtained. Nickel protoxide is difficult to dissolve in various strong acids and oxidizing acids, and a foundation is laid for further separation of base metals and non-metallic element sulfur from precious metals to produce high-grade platinum concentrate.

The utility model discloses a non-ferrous metal rolled copper strip stress relieving device which comprises a machining table, an electromagnetic heater is fixedly installed on the upper end face of the machining table through an installation groove, a telescopic groove is formed in the upper end face of the machining table, and a toothed plate is fixedly connected to the inner bottom wall of the telescopic groove through an elastic mechanism. A supporting plate is fixedly installed on the upper end face of the machining table, a moving frame is fixedly connected to the bottom wall of the supporting plate through a lifting mechanism, a reciprocating lead screw is rotatably installed in the moving frame, and a motor connected with the reciprocating lead screw is fixedly installed on the outer wall of the moving frame. By arranging the reciprocating lead screw, the lead screw sleeve, the lower pressing roller and the like, when the lower pressing roller extrudes a copper sheet, the reciprocating lead screw drives the lead screw sleeve to move through the cooperation of the limiting rod, and then the lead screw sleeve drives the lower pressing roller to move through the cooperation of the lower pressing frame, so that the lower pressing roller can roll the heated copper sheet; and deformation of the copper sheet caused by heating in the stress eliminating process is avoided.

The invention relates to the technical field of non-ferrous metal resource recycling, in particular to an efficient lead and silver chemical separation method. The invention discloses an efficient lead and silver chemical separation method. The method comprises the following steps of acid solution leaching treatment, silver extraction agent extraction treatment, reducing agent reduction treatment, alkali solution dissolution treatment and precipitating agent or oxidizing agent precipitation treatment. According to the efficient lead and silver chemical separation method, copper, zinc, iron and other metals in the lead and silver residues are leached into the solution through the acid solution, then lead is leached into the solution through the alkali solution, efficient separation of lead and silver is achieved, the lead and silver separation efficiency can reach 90% or above, the lead and silver are made into corresponding products, the purity of the lead and silver products is high, the economic value is high, and the method is suitable for industrial production. And secondary pollution is avoided, the application range is wide, various lead-containing materials can be treated, resource waste is reduced, energy consumption is low, and the method is suitable for large-scale production.

The invention discloses a multi-roller system efficient non-ferrous metal fine control calendering unit, and relates to the related field of non-ferrous metal processing, the multi-roller system efficient non-ferrous metal fine control calendering unit comprises a workbench located on the horizontal ground, a preheating module is installed at the upper end of the left side of the workbench, a non-ferrous metal plate extends into the preheating module, and the other end of the non-ferrous metal plate extends into a calendering frame; the bottom of the calendering frame is fixed to the top of the workbench. A first conveying pipe is further connected to one side of the air conveying piece, one end of the first conveying pipe is arranged on one side of the limiting mechanism, and a multi-position cooling mechanism is further arranged at the upper end of the limiting mechanism and achieves cooling treatment on the non-ferrous metal plate in different directions. According to the multi-roller-system efficient non-ferrous metal precise control calendering unit, the multi-direction cooling mechanism is arranged, the upper end and the lower end of a calendered non-ferrous metal plate can be subjected to multi-direction cooling treatment through the arrangement of the multi-direction cooling mechanism, and later machining of the calendered non-ferrous metal plate is facilitated.

The invention discloses a direct coal liquefaction catalyst suitable for mild coal liquefaction in the Hami region and a preparation method thereof, and relates to the technical field of direct coal liquefaction. The method comprises the following steps: firstly, preparing coal slurry with a certain mass fraction, and grinding and finely crushing the coal slurry; adding a surfactant into the obtained coal slurry to disperse the coal slurry; sequentially adding ferric salt and ammonia water into the dispersed coal slurry to obtain a first mixed solution; blowing oxygen into the first mixed solution, and after a period of time, adding a non-ferrous metal salt solution to obtain a second mixed solution; and filtering the second mixed solution, collecting solids, and drying the solids to obtain the product. According to the method, the dispersity and the catalytic effect of the iron-based catalyst can be effectively improved, and the coal liquefaction performance of coal with the inert component proportion being smaller than 2% under the mild liquefaction condition can be improved on the premise that a small amount of non-ferrous metal is used.

The invention discloses a high-specific-gravity and high-toughness tungsten-nickel-copper material and a preparation method thereof, and belongs to the technical field of non-ferrous metal materials. The material comprises the following components in percentage by mass: 6-15% of nickel; 2-5% of copper; 2-5% of manganese, and the balance tungsten and inevitable impurities. The preparation method of the material comprises the following steps: preparing materials (pure tungsten powder, pure nickel powder, pure copper powder and pure manganese powder), mixing the powder, pressing, sintering, and carrying out recrystallization annealing heat treatment. In the burdening step, two kinds of tungsten powder with different particle size grades are selected and added, and the gradient particle size ratio is adjusted. By adding the strengthening element manganese, combining the gradient particle size ratio and enhancing interface bonding, the high specific gravity and high strength of the material are kept, meanwhile, excellent toughness can be kept, and the material is suitable for aerospace gyroscope rotors and balance weight parts, electronic industry precise instrument parts, medical instrument ray shielding materials and national defense military industry kinetic energy armor-piercing weapon parts.

The invention discloses a method for recovering rare earth and valuable metal from waste rare earth alloy by using ionic liquid, and belongs to the technical field of non-ferrous metal metallurgy. Comprising the following steps that (1) recycled waste rare earth alloy is smashed, and waste rare earth alloy powder is obtained; (2) the waste rare earth alloy powder is put into ionic liquid to be subjected to a leaching reaction, solid-liquid separation is conducted after leaching is completed, and solid rare earth salt and filtrate are obtained; and (3) the filtrate serves as electrolyte, an electrolytic deposition system is constructed for electrodeposition, and valuable metal is obtained. The recovery method also has the advantages of simple process, environmental friendliness, high purity of the regenerated electrolyte and stable performance, and has great popularization and application prospects.

The invention relates to a process for preparing a phosphor copper rod by using a phosphonate-amide composite purifying agent as a quenching aid, and belongs to the technical field of non-ferrous metallurgy. Phosphorus pentoxide and sodium carbonate are mixed and decocted into fused salt, the fused salt is cooled and ground and then added into a corundum crucible together with scrap copper to be rapidly heated, compressed air is blown in, and slagging-off is conducted after heat preservation and standing; blowing mixed gas into the melt for reduction refining; adding calcium boride into the melt for refining; the refined copper liquid is subjected to continuous casting and continuous rolling; rapidly immersing the phosphorus copper rod subjected to continuous casting and rolling into a quenching aid solution, and carrying out quenching treatment; and the quenched phosphor copper rod is blow-dried and dried, and the high-conductivity phosphor copper rod is obtained. The high-purity phosphorus copper rod prepared by the method is excellent in key indexes of copper content, phosphorus content and conductivity, and meets the expected requirements of high purity and high conductivity.

The invention belongs to the technical field of non-ferrous metal alloy manufacturing, and particularly relates to a non-ferrous metal alloy manufacturing dust treatment device which comprises a dust treatment box, a feeding port is formed in one side of the dust treatment box, a first conveying belt is arranged on the upper portion of an inner cavity of the dust treatment box, and a second conveying belt is arranged on the lower portion of the inner cavity of the dust treatment box. The first conveying belt and the second conveying belt are arranged in a staggered mode, each of the first conveying belt and the second conveying belt is composed of two sets of belts arranged in a staggered mode and used for conveying non-ferrous metal alloy, and a cleaning space is provided for the non-ferrous metal alloy through the staggered arrangement of the belts. Dust cleaning assemblies are arranged in inner cavities of the first conveying belt and the second conveying belt correspondingly, and the problems that dust is sucked away and cleaned away through a dust collector, operation is not convenient enough, the cleaning face of the fluted disc needs to be replaced, and dust on the surface of the fluted disc cannot be rapidly and circularly cleaned away are solved.