59results about "Reverberatory furnace" patented technology

The invention discloses a method for extracting high arsenic complicated golden ore concentrate multielement. The method comprises the following steps that: the multielement complicated golden ore concentrate with extra-high arsenic is subjected to the roast dearsenification technique treatment, part of sulfur in the multielement high arsenic golden ore concentrate converted into sulfur dioxide and the arsenic converted into arsenic trioxide enter flue gas which is subjected to dust and arsenic collection, and then enter an acid making system to produce sulphuric acid; the multielement smelting slag and multielement low arsenic golden ore concentrate obtained by roast dearsenification, return products and flux are mixed to obtain copper matte regulus, and the like by adopting oxygen enrichment bottom blowing matte smelting gold collecting process to carry out the smelting process; the copper matte regulus is subjected to converting and refining to cast an anode plate which is sent to an electrolysis system to obtain an electrolytic copper product by refining; anode mud generated through electrolysis is sent to a noble metal refine system to produce gold and sliver, and the like; smelting slag and converting slag are subjected to floatation treatment to obtain copper and iron ore concentrate; and the generated gangue belongs to harmless slag and can be used. The method has the characteristics of wide range of the raw material application, high synthesized recovery efficiency of valuable element, and obvious economic and environment benefits.

The invention relates to a method for comprehensively recovering valuable metals from zinc smelting slag, belonging to the technical fields of metallurgy and chemical industry. The method comprises the following steps: proportioning blast furnace slag, iron alum slag and lead silver slag in a mass ratio of (1-2):(2-4):1, mixing, briquetting and drying; smelting the briquette, coke and a fluxing agent in a mass ratio of (4-8):(0.5-2):1 in a matting furnace at 1050-1400 DEG C; collecting dust from matting furnace gas to obtain indium-rich zinc oxide smoke dust; and settling the fused mass while keeping temperature at 1000-1400 DEG C to obtain lead copper matte and harmless furnace slag. The method implements synchronous enrichment and recovery of valuable elements in the zinc smelting slag by the one-step smelting process, and has the characteristics of simple technical process, high comprehensive recovery rate of valuable metals, high cleanness and high efficiency.

The invention discloses a method and device for smelting recycled copper in a reverberator. With the method, partial high-temperature fumes of the reverberator are directly mixed with combustion-supporting air to form a combustion-supporting gas with high temperature and low oxygen concentration, thereby improving the uniformity of temperature distribution in the reverberator, reducing local high temperature and reducing the burning loss of metal. The horizontal section of a flue gate of the reverberator is connected with a fume backflow pipe, a high temperature fan and a bypass cool air pipe to transmit a part of high temperature fume exhausted from the reverberator to a burner so that high air temperature and low oxygen concentration combustion is implemented in the reverberator and the fume backflow content accounts for 30% to 50% of the total volume of the fume in the reverberator. The method provided by the invention has the advantages of high metal recovery rate and high heat efficiency, and the device has the advantages of simple structure and reliable performance.

A method and system for the copper anode refining is provided in which coherent jet technology is employed to heat the molten blister copper and/or melt scrap copper charges using a melting flame, oxidize the sulfur in the molten blister copper, and reduce the oxygen in the molten blister copper using top-blown coherent jet gas streams from one or more multi-functional, coherent jet lance assemblies. The present system and method employs a microprocessor-based controller operatively controlling the flow of an oxygen-containing gas, an inert gas, a reducing agent and a fuel to the coherent jet lance. The disclosed copper anode refining system and method greatly improves copper production while lowering oxidation/reduction cycle times and minimizing NO_x emissions.

The invention relates to a copper bar continuous casting and tandem rolling production method which comprises the steps: adding copper raw material into a reflecting furnace with the temperature of 1145 DEG C at the speed of 8t/h; after that, filling air for 30min for oxidation when the temperature of copper reaches 1150-1170 DEG C; using timber to deoxidate liquid copper for 1.5-2h at the temperature of 1200-1250 DEG C; under the condition of 1120-1130 DEG C, outputting copper and casting; after the crystallizing the copper and producing ingots at 850-880 DEG C, rolling copper bars at the rotating speed 1200r/min-1320r/min of a rolling mill. The method can control the temperature in the production process of copper bar continuous casting and tandem rolling, and improves the product quality and the production efficiency.

The invention relates to a reverberatory furnace pyrorefining method of crude copper with high arsenic and antimony which is a pyrorefining method combining melting, redox volatilizing and composite alkaline fusing agent slagging together. When refining the crude copper with high content of arsenic, antimony and other impurities in the reverberatory furnace, the process comprises the following steps: firstly performing fusion volatilization and redox volatilization and slagging with composite alkaline fusing agent to realize multiple stage purification. The invention has the advantage of simple process, high production efficiency and the like.

The invention discloses a novel high-grade miscellaneous copper refining furnace system which comprises a furnace body and an auxiliary system, wherein the furnace body is formed by butting and combining furnace tails of two fixed type refining reflection furnaces; two groups of combustion openings are symmetrically formed in the left end and the right end of the furnace body and are correspondingly provided with combustion systems and oxygen and gas supply systems; a high-grade copper outlet and a low-grade copper outlet are formed in one end of the furnace body and both adopt water cooling type structures; each copper outlet is correspondingly provided with a cooling water circulating system; a smoke discharging opening is formed in the middle of the furnace body; a material feeding working door is arranged on the furnace wall on one side of the furnace body; a reducing pipe is also arranged on each material feeding working door; each reducing pipe is externally connected with a reduced coal-based powder quantitative control device; three slag discharging openings are also formed in the furnace wall; sizing bricks are symmetrically mounted at the lower part of the furnace wall on two sides of the upper part of the furnace bottom; ventilating pipe structures are mounted on the sizing bricks. The novel high-grade miscellaneous copper refining furnace system is ingenious in structural design, integrates the advantages of three existing refining furnaces, and not only lowers the investment cost, but also is relatively energy-saving and environment-friendly.

The invention discloses a production process for low-oxygen copper bars. The production process comprises the following steps of: (1) refining copper liquid; (2) adding a purification flux into the copper liquid obtained in the step (1), and conveying the copper liquid into a holding furnace which is full of nitrogen; (3) straightening a low-oxygen copper bar; (4) continuously extruding the copperbar; (5) after the extrusion, cooling and drying the low-oxygen copper bar through a vacuum antioxidant tube and a cooling trough; and (6) rapidly and uniformly coating wax on the surface of the copper bar, and packaging the copper bar to obtain a high-density oxygen-free copper bar. The production process for low-oxygen copper bars has two effects of impurity removal and gas removal, so that thepurity of copper is increased, the purity of copper materials is improved, the oxygen content of the copper materials is greatly reduced, and the electric conductivity is high.

A smelting method for separating Cu, Zn and Co from the ore material containing Cu (10-50%), Zn (10-40%) and Co (0.2-2%) features that after the said ore material is pretreated from removing harmful impurities or sintered for removing sulfur, it is molten in blass furnace by selective reduction. As a result, the copper in coarse copper mode is discharged, the zinc in zinc oxide is collected from chimny, and the cobalt in slag mode is recovered. Its advantages are high separation effect and metal recovery rate.

The invention discloses a production technology of refined copper. The technology comprises the following steps: selecting copper concentrate; continuously feeding the produced molten matte into a converter; converting to obtain coarse copper; arranging electrolytic baths; arranging linings of the electrolytic baths; connecting the electrolytic baths in series in a copper electrolyzing workshop; arranging an anode plate, a cathode plate and an electricity conducting rod; charging direct current to the electrolytic baths; dissolving copper in a Cu<2+> form under the effect of the direct currentafter electrons on an anode are lost; dissolving out the Cu<2+> in a copper metal form after electrons are supplied to a cathode; recovering anode slime containing precious metal, selenium, telluriumand other rare metals as a byproduct in copper electrolyzing; extracting and cleaning base metal impurities which gradually accumulate in electrolyte in regular period; removing copper sheets from the baths; and washing the copper sheets with water. According to the production technology of the refined copper, the processes are compact; the refined copper smelting efficiency is improved; and moreover, the energy consumption is reduced.

The invention discloses a purple mixed copper smelting and oxidation-reduction system which comprises a reverberatory furnace body. A flame combustion device and a reduction device are arranged on the reverberatory furnace body, the flame combustion device comprises a fuel feeding pipeline, a combustion improver feeding pipeline and a combustor arranged on the reverberatory furnace body, and the reduction device comprises a reduction control system connected with the reverberatory furnace body. The flame combustion device further comprises a control valve set, a PLC, a computer operating screen and a material sensor, the reduction device further comprises a methyl alcohol feeding box, a feed pump, a smoke waste heat decomposer, a decomposed gas cooler, a decomposed gas molecule absorber, a compression system and a gas storage tank, and the methyl alcohol feeding box, the feed pump, the smoke waste heat decomposer, the decomposed gas cooler, the decomposed gas molecule absorber, the compression system and the gas storage tank are communicated in sequence. The purple mixed copper smelting and oxidation-reduction system is simple in structure, strong in practicality and especially suitable for a purple mixed copper reverberatory furnace.

A method for treating combustible material of the present invention includes providing a pipe opened to a molten substance surface above the molten substance surface of molten substance stored in a furnace body for smelting nonferrous metals, and blowing combustible material containing valuable metals and oxygen-enriched air into the molten substance surface of the molten substance from the pipe.

The invention provides a method for producing raw copper from matte converting water quenching slag by adopting reverberatory smelting. The method comprises the following steps: carrying out water quenching on top-blown furnace matte converting slag containing 14-22% of copper and 32-48% of iron, then adding the slag into a reverberatory, adding 1-3% of matte converting slag and reducing coal of which the particle size is 1-20mm, and carrying out reduction smelting at the temperature of 1200-1250 DEG C so as to obtain raw copper in which the copper content is greater than or equal to 95% and reverberatory slag in which the copper content is less than 2%. By adopting the method provided by the invention, the direct recovery rate of copper is greater than 90%. The converting slag after water quenching does not need to be specially prepared and only needs to be blended with a right amount of reducing agent to be smelted in the reverberatory, so that the material preparation is simple.

The invention discloses a blow pipe for a copper smelting furnace and a manufacturing method thereof. In the blow pipe, one side of a metal pipe is sleeved on one side of a fire-resistant pipe; the sleeved part is sealed by fire clay; a non-fire-resistant pipe is the metal pipe; and the fire-resistant pipe contains the following raw materials in part by mass: 55 to 65 parts of alumina, 20 to 25 parts of magnesia, 10 to 15 parts of active magnesia powder, 2 to 3 parts of zirconia micro powder, 2 to 4 parts of plasticizing agent, and 7 to 9 parts of binding agent. The blow pipe for the copper smelting furnace has the advantages of high-temperature resistance, thermal shock resistance, high strength, resistance to corrosion of gases such as SO2 and the like, resistance to scouring and vibration of copper slag and high-speed combustion-gas flow and corrosion of molten slag, and long service life.

The invention belongs to the technical field of copper rod preparation and relates to a high-quality low-oxygen copper rod and a preparation method thereof. The invention mainly aims at the problems that an existing copper rod is poor in connection stability, complex in preparation process, high in cost, low in quality and the like. According to the technical schemes, the high-quality low-oxygen copper rod includes a copper rod body, a connecting groove is formed in a center shaft at one end of the copper rod body, and a connecting column is arranged at one end of the copper rod body. The invention further provides a preparation method of the high-quality low-oxygen copper rod. The preparation method comprises the following steps that: 1, raw materials are treated; 2, c copper liquid is casted and crystallized; 3,machining a copper casting blank; and 4, a low-oxygen copper rod is obtained. According to the prepared low-oxygen copper rod connector, the connecting face is enlarged, the connecting stability of the copper rod is improved, the conductivity and tensile strength of the low-oxygen copper rod are improved, the oxygen content in the copper rod is reduced, the tensile strength and the conductivity of the low-oxygen copper rod are improved, waste copper is utilized, the production cost is reduced, resources are saved, and the low-oxygen copper rod is suitable for application and popularization.

The invention provides a method for preparing an aluminum and white copper alloy by utilizing the recovery of a waste lithium battery. The method comprises the following steps: the waste lithium battery is crushed, and active material powder and mixed particles containing copper and aluminum are separated out; the separated-out mixed particles containing copper and aluminum are put into a screening machine, and a copper-rich material is screened out; the screened-out copper-rich material is put into a refining reverberatory furnace of 1250-1350 DEG C for being molten; then, an auxiliary reducing agent and a flux are added into a molten product; an alloy semi-finished product is obtained after stirring and slag dredging for a certain period of time; according to the value of deviation between the mass contents of all metal elements in the alloy semi-finished product and those of all metal elements required for the preparation of the aluminum and white copper alloy, corresponding pure metal is added into the alloy semi-finished product; and the aluminum and white copper alloy is formed through refining, stirring, slag dredging and casting in the refining reverberatory furnace. The method provided by the invention has the beneficial effects that the process is simple and novel, the product purity is high, and the pollution is relatively low.

An operation method of a copper-smelting furnace is characterized by including supplying an Fe metal source into a copper-smelting furnace together with a feeding material including copper concentrate and a flux, the copper concentrate including Al, the Fe metal source including an Fe metal of 40 mass % to 100 mass %.

The invention relates to the technical field of metallurgy and chemical industry, in particular to a preparation method and a use method of a slagging agent for smelting copper dross, which are used for solving the problems that the use amount of the slagging agent is large, the resource recovery rate in a smelting solution is low and the recovery cost is high because the existing slagging agent cannot fully react with the smelting solution. Copper dross is added into a reverberatory furnace to be heated and smelted, then anode slime is added, after the copper dross and the anode slime are smelted, a slag former is added for a reduction reaction, meanwhile, stirring is conducted, liquid-state thin slag is kept, after reduction is finished, standing precipitation is conducted, and upper-layer thin slag, middle-layer lead copper matte and lower-layer high-antimony lead liquid are discharged; according to the using method, molten copper dross and anode slime are reduced through the slag former, smelting sticky slag and non-molten slag are converted into thin slag with good fluidity, tin, copper and high-antimony lead in the copper dross can be recycled in a classified mode through one-time smelting, the copper dross resource recycling efficiency is greatly improved, the service life of a reverberatory furnace is prolonged, and the production cost is reduced. The comprehensive recovery cost of the secondary lead is reduced.