340 results about "Dross" patented technology

The invention discloses a treatment device and method for lead electrolysis anode copper removal scum, and relates to the technical field of lead electrolysis anode copper removal scum treatment.The treatment device comprises a cylindrical shell, the outer wall of the cylindrical shell is fixedly sleeved with a pair of annular grooves, a plurality of evenly-distributed exhaust holes are formed in the annular grooves, and material blocking nets are installed in the exhaust holes; the pair of annular grooves are communicated through a gas collecting pipeline; by arranging the shell, a closed space is provided for scum treatment, harmful gas leakage is avoided, the effect that scum and decomposition liquid are fully mixed and reacted is promoted through cooperation of internal structural components of the shell, uniform dispersion and guiding of the scum are achieved by arranging the scum distributing mechanism, the distributing uniformity and continuity are guaranteed, and the service life of the scum is prolonged. And by arranging the scum treatment mechanism, the effects of efficiently decomposing, filtering and separating scum, promoting sufficient mixing of the scum and decomposition liquid, improving the decomposition efficiency, preventing material screening holes from being blocked and ensuring continuous proceeding of the filtering process are achieved.

The invention discloses a refining impurity cleaning and removing process for secondary copper, which comprises the following steps: (a) pretreatment melting: melting a secondary copper raw material to form copper liquid, and controlling the temperature to be 1150-1250 DEG C; (b) oxidizing and slagging: introducing oxygen-containing gas into the copper liquid for 20-40 minutes to oxidize impurity elements to form scum; according to the refining impurity cleaning and removing process for the secondary copper, As and Sn are converted into high-valence oxides through oxidation, then a low-melting-point borate slag system is formed through borax in the composite flux, and efficient trapping of impurities is achieved. The mass transfer process is enhanced, flux agglomeration is avoided, and the impurity removal rate is increased by 30% or above. The borax / calcium fluoride combination significantly reduces the melting point of the slag system (actually measured lt; and the lead and tin removal efficiency is improved.

The invention relates to the technical field of aluminum alloy ingot preparation, and discloses a high-temperature-resistant aluminum alloy ingot and a preparation method thereof. The preparation method comprises the following steps: firstly, setting chemical components in a high-temperature-resistant aluminum alloy ingot in percentage by weight to obtain preparation raw materials; preparing raw materials are put into a smelting furnace, an improved differential evolution algorithm is used for optimizing the stirring speed and the heating speed of the smelting furnace, so that the preparing raw materials are completely melted, a prepared melt is obtained, meanwhile, a refining agent is added into the prepared melt, standing is conducted, dross is collected, and a refined melt is obtained; and the casting temperature is controlled through a thermocouple multi-point calibration method, the refined melt is poured into a preheated mold, and the high-temperature-resistant aluminum alloy ingot is obtained after cooling and solidification. The high-temperature-resistant aluminum alloy ingot is obtained through burdening, smelting, refining and casting, the purpose of preparing the high-temperature-resistant aluminum alloy ingot is achieved, and the method is objective and accurate.

The invention provides an energy-saving smelting furnace structure, and relates to the technical field of smelting furnaces, the energy-saving smelting furnace structure comprises a smelting furnace body, a lifting furnace cover is arranged above the smelting furnace body, a waste residue storage box is fixedly connected to the side surface of the smelting furnace body, a furnace cover bracket is vertically welded above the lifting furnace cover, and a lifting push cylinder is fixedly connected above the furnace cover bracket; the smelting furnace has an automatic slag salvaging function, slag is discharged to the slag storage box through the slag discharge port when the smelting furnace is closed, floating impurities in molten liquid are removed, the cover does not need to be opened manually to remove the floating slag, heat loss in the smelting furnace opening process is reduced, energy consumption of the smelting furnace is reduced, and the problem that when an existing smelting furnace is used for smelting metal, the cost is low is solved. The problems that a furnace cover needs to be opened to add metal materials in the smelting process, heat loss is caused, energy consumption is not reduced, and in the metal smelting process, a smelting furnace needs to be opened to fish and separate dross floating on the upper layer, heat loss is caused, and energy consumption is not reduced are solved.

The invention discloses a preparation method for preparing oxygen-free copper through efficient impurity removal of recycled copper, which comprises the following steps: heating and melting the recycled copper to obtain a recycled copper melt, and determining the content of copper element by adopting spectral analysis; oxygen is continuously introduced into the regenerated copper melt, impurity removal agent powder is weighed according to the content of impurity elements and sprayed into the furnace together with the oxygen to react with impurities in the melt, and the regenerated copper melt subjected to impurity removal is obtained; continuously introducing natural gas melt into the regenerated copper melt subjected to impurity removal, weighing deoxidant powder according to oxygen content in the natural gas melt, and spraying the deoxidant powder into the furnace by using the natural gas to react with oxygen in the melt, so as to obtain a regenerated copper melt subjected to oxygen removal; and standing the deoxidized regenerated copper melt, removing scum in the melt, and casting to obtain an oxygen-free copper product. According to the method, the impurity removal agent and the deoxidant powder are used in a combined mode, the time needed by oxygen impurity removal and natural gas reduction is shortened, the quality of the molten copper is improved, consumption of production materials is reduced, the production efficiency is improved, the production cost and pollution to the atmospheric environment are reduced, and the method is suitable for large-scale application.

The purpose of the present invention is to provide a hot-dip Al-Zn-Si-Mg-based steel sheet which has excellent surface appearance and in which the occurrence of wrinkle-like defects is suppressed without any defects such as scum defects. In order to achieve the purpose, the present invention is a hot-dip Al-Zn-Si-Mg-based steel sheet provided with a plating film, the plating film having a composition containing 45-65% by mass of Al, 1.0-3.0% by mass of Si, 1.0-10.0% by mass of Mg, and 0.01-0.5% by mass of Mn, with the remainder comprising Zn and unavoidable impurities, and the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, and the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet. The height difference per 1 mm length of the surface of the steel sheet is 10 [mu] m or less.

The present application relates to a kind of bauxite clinker kiln method and system for disposing aluminum ash, belong to metallurgical environmental protection technical field, the method includes the following steps: pretreatment aluminum ash, obtain fine powder aluminum ash;Fine powder aluminum ash is added to bauxite slurry, so that fine powder aluminum ash and the dry raw material and calcined coal ash in bauxite slurry are mixed, and mixed sintering is carried out, and then cooling is carried out, to obtain clinker;The present application carries out resource utilization to aluminum ash, replaces part of aluminum ore, and is used in the production of aluminum-based new material product, while reducing the production cost of aluminum-based new material product, realizes the harmless treatment of aluminum ash.

The invention discloses a method for cooperatively treating dross through graded smelting and oxidizing roasting, and relates to the technical field of pyrometallurgy, and the method specifically comprises the following steps: (1) smelting copper dross, and settling lead liquid to obtain lower-layer metal lead and upper-layer dross; and (2) putting the upper-layer dross into a converter, and sequentially carrying out oxidizing roasting and reduction smelting to obtain copper matte and lead bullion. According to the method, a two-stage process framework for improving the copper grade through smelting pot layering and converter deep lead removal is created for the first time, natural sedimentation layering of the lead liquid and the waste residues is achieved through the smelting pot by means of the density difference of molten substances, and metal and impurity phases are effectively separated; by means of the method, the lead liquid closed-loop circulation system improves the lead recovery rate to 97% or above, and the final copper grade of matte is improved to 55%-65%.

The invention discloses refining equipment and a refining method for aluminum alloy in aluminum ash, and belongs to the technical field of aluminum ash treatment. The refining equipment comprises a storage frame with a movable rail at the lower end, first connecting plates with an infrared temperature sensor and an infrared moisture meter are arranged at the front end and the rear end of the storage frame respectively, and a transmission disc is arranged at the lower end of the storage frame. According to the aluminum slag refining device, the problem that an existing aluminum slag refining device cannot conduct corresponding-orientation conveying and corresponding treatment on humid and high-temperature aluminum slag is solved, an infrared temperature sensor and an infrared moisture meter can detect the state of the aluminum slag, and after it is detected that the temperature of the aluminum slag is high or the aluminum slag is humid, the aluminum slag can be subjected to corresponding-orientation conveying and corresponding treatment. And the storage frame can be dumped into the corresponding water-cooled roller cooler and the corresponding material rotary roller dryer for treatment, and the trend of intensification and cleanness of modern industrial equipment is met.

The application discloses a kind of waste copper pyrogenic regeneration intensive smelting device, including support, and for being arranged on the smelting furnace of support, copper water separation component, copper water shaping component, scraping component and lifting driver, copper water separation component and copper water shaping component are used to be sequentially arranged under smelting furnace, so that the copper water smelted by smelting furnace is separated by copper water separation component and then transmitted into each cavity of copper water shaping component to be shaped, scraping component includes multiple scrapers, transmission support rod for being connected with multiple scrapers, and guide support rod arranged on support, part of transmission support rod is slidably connected with guide support rod, wherein, lifting driver is used to drive copper water shaping component, scraper and transmission support rod to carry out synchronous lifting movement, by the setting, before copper water shaping, complete the separation process of dross, solve the removal mode of dross in the prior art, there is the technical problem of low efficiency and causing the risk of casualties of operating personnel.

The present invention relates to the field of antimony smelting, and specifically discloses a method for removing arsenic from arsenic-containing crude antimony. The method comprises stirring and refining the arsenic-containing crude antimony and an iron-loaded composite material in a protective atmosphere at a temperature of 750 to 1000°C, causing As in the arsenic-containing crude antimony and iron in the iron-loaded composite material to undergo an alloying reaction and form a slag containing an FeAs alloy. The slag is then skimmed to obtain an arsenic-removed antimony melt. The iron-loaded composite material comprises a carrier and an immobilized iron element thereon; and the density thereof is less than 3 g / cm 3 The mass of iron in the iron-loaded composite material is 1 to 2 times the theoretical amount required to transform As into FeAs. The new arsenic removal method proposed by the present invention has good arsenic removal effect, simple operation, low raw material price, and good application value.

The invention relates to the technical field of casting equipment, and particularly discloses a camshaft casting continuous production device and method.The device comprises an electric induction furnace and a slag salvaging mechanism, and the electric induction furnace comprises a furnace body and a support arranged on the furnace body and close to a furnace opening; the slag salvaging mechanism comprises an outer sleeve rotationally connected with the support, a spiral conveyor coaxially arranged in the outer sleeve, and at least one intermittent slag collecting assembly, wherein one end of the outer sleeve extends into the furnace body from the furnace opening. A slag inlet and a slag outlet are formed in the outer sleeve in the axial direction at intervals, the intermittent slag collecting assembly is constructed to continuously collect dross in molten iron in the furnace body and extrude the dross into the outer sleeve from the slag inlet, and the spiral material conveying machine is constructed to continuously convey the dross from the slag inlet to the slag outlet and discharge the dross, so that the time difference between manual slag salvaging and connection of previous and later procedures is effectively solved; the continuity of casting production is guaranteed, and the production efficiency is improved to adapt to the large-scale production requirement; and meanwhile, the consistency of the deslagging degree is ensured through automatic deslagging operation, and the stability of the quality of the camshaft blank is improved.

The application discloses a copper wire blank production method for a multi-head wire drawing machine, relates to the technical field of copper wire blanks, and comprises the following steps: selecting raw materials, equipment inspection and initial charging, preheating of a furnace system, copper material heating, melting and charging, copper liquid scum removal, copper liquid oxygen content control, continuous casting, pre-rolled piece trimming, continuous rolling, copper wire blank cooling, copper wire blank drying and copper wire blank protection, so as to obtain the copper wire blank. The copper wire blank obtained by the method effectively reduces the proportion of defects such as inclusions, cracks and pores in the obtained copper wire blank, the breaking rate of the copper wire blank in the multi-head wire drawing machine is obviously reduced, and the obtained copper wire blank is especially suitable for the production of the multi-head wire drawing machine.

The invention relates to a laterite nickel ore double-screw ore washing system which comprises a double-screw ore washer, a movable screen and a conveying belt, the double-screw ore washer is provided with a slurry outlet, the feeding end of the movable screen is connected with the slurry outlet, the movable screen screens slurry guided out through the slurry outlet, and the conveying belt is arranged on the conveying belt. The movable screen can drive materials screened by the movable screen to move from the feeding end to the discharging end of the movable screen, and the conveying belt is arranged on the lower side of the discharging end of the movable screen. Mineral aggregate is guided into the double-screw ore washer, the double-screw ore washer scrubs the mineral aggregate, scrubbed ore pulp flows to the movable screen from the pulp outlet, the movable screen screens the ore pulp, scum in the ore pulp is intercepted, and the scum falls onto the conveying belt and is conveyed to a designated position through the conveying belt.

The application discloses a kind of electric power steel pipe tower whole hot-dip galvanizing device of galvanizing equipment technical field, including zinc bath and support rod, L type fixed rod fixedly connected in the support rod rear end, the L type fixed rod bottom end is fixedly connected in the zinc bath top, installation groove is set in the right end of the support rod, pin shaft is installed in the installation groove, guide rod is installed on the pin shaft, mounting plate is fixedly set in the zinc bath top one side, the mounting plate is provided with two groups, sprocket is installed on the mounting plate, two groups the mounting plate is all provided with sprocket, baffle is fixedly connected in the front end of the connecting rod, baffle lower half is stably immersed below zinc liquid level, uniform speed moves zinc liquid surface layer dross, and dross is continuously concentrated and pushed to zinc bath single side area, realize dross automation, regularity collection processing, effectively solve the problem that traditional manual salvage is not timely, cleaning is not thorough, liquid surface dross remains.

This utility model belongs to the field of ingot casting processing, specifically disclosing a water inlet structure for a smelting furnace. It includes a feed tank located at the furnace opening, with a feed inlet at the top and a cover for sealing it. A discharge outlet is located on the side of the feed tank, communicating with the furnace opening. The bottom of the feed tank is inclined, with its lower end facing the furnace opening. A limiting ring is installed on the cover, with a sealing element on its inner wall. The limiting ring engages with the outer wall of the upper part of the feed tank, and the sealing element seals the gap between the limiting ring and the outer wall of the upper part of the feed tank. This utility model solves the problems of molten aluminum oxidizing upon contact with air and forming slag when flowing through the water inlet, and some molten aluminum remaining on the inner wall of the water inlet due to temperature drop, forming hardened aluminum slag, requiring regular slag removal and causing raw material waste.

The invention discloses a preparation process of pure aluminum powder capable of reducing iron, sodium and hydrogen in melt, which comprises the following specific steps: step 1, drying a pure aluminum ingot, charging the pure aluminum ingot into a furnace, and continuously stirring the pure aluminum ingot in an inert atmosphere after the pure aluminum ingot is completely molten; 2, under the inert atmosphere, a dried iron removal agent is added into the melt in the step 1, and stirring continues to be conducted; 3, dried inert gas is introduced into the melt obtained in the step 2 for rotary gas and impurity removal; 4, a dried sodium removal agent is added into the melt treated in the step 3 for sodium removal, and scum on the surface of the melt is removed after standing; and 5, the melt treated in the step 4 is vacuumized, atomized and pulverized, and the high-quality pure aluminum powder is obtained.

The invention discloses a smelting furnace slagging-off method and a slagging-off system thereof, the slagging-off system continuously executes a scum cleaning task and a bottom slag cleaning task of a plurality of smelting furnaces, and in the slagging-off process of the two tasks, a linkage mechanism drives a slagging-off piece to complete the slagging-off action; the linkage mechanism is provided with a reference point, and in the RGV mode, the distance between the reference point and the furnace mouth is kept unchanged; when scum is cleaned, the scum removing piece can scrape the liquid level of molten metal in the state of being submerged into the liquid level by a fixed depth. When bottom slag is cleaned, the slagging-off piece can be attached to the shape of the furnace bottom to scrape; in the scum cleaning action and the bottom slag cleaning action, when the slag removing piece is about to make contact with the slope face of the furnace mouth, the telescopic action set can stretch out and draw back in the direction parallel to the slope face of the furnace mouth, and the slag lifting action is achieved. The scraping and lifting type slagging-off action is adopted, the slagging-off action can be efficiently and accurately executed, and the requirement for cleaning floating slag and bottom slag is met.

The present application belongs to the technical field of secondary aluminum ash treatment, and particularly relates to a secondary aluminum ash harmless treatment device and a secondary aluminum ash harmless treatment method, which comprises a tank body one, a feeding port is arranged at the upper end of the tank body one, a discharging pipe one and a discharging pipe two are arranged at the lower end of the tank body one in a penetrating manner, and a valve one is arranged on each of the discharging pipe one and the discharging pipe two; a material body supporting assembly, which comprises an internal supporting piece arranged horizontally in the tank body one, and a sieve hole is arranged on the supporting piece; and a reaction agent spraying assembly. The secondary aluminum ash harmless treatment device, the reaction agent solution continuously flushes the material body on the supporting piece, and the material body is fully reacted until the reaction is complete; the device is suitable for the use of the hydrolysis process of the secondary aluminum ash in the treatment process, the reaction agent solution is recycled, and the material body to be reacted is continuously flushed, so that the problem that a large amount of reaction agent solution needs to be consumed in the conventional soaking reaction process is solved.

The invention relates to the technical field of molten aluminum standing furnaces, in particular to an automatic slag discharging device of a molten aluminum standing furnace, which comprises a slag discharging mechanism, the slag discharging mechanism comprises a dross scraping mechanism and a deposited slag scraping mechanism, the dross scraping mechanism is arranged in a furnace body and used for scraping dross positioned in a square accommodating cavity to an outlet of the furnace body, and the deposited slag scraping mechanism is arranged in the furnace body and used for scraping deposited slag in a square accommodating cavity to an outlet of the furnace body. Deposited slag attached to the inner wall of the hemispherical containing cavity is scraped away; the slag removal device has the beneficial effects that the dross scraping mechanism and the deposited slag scraping mechanism are integrated through the slag removal mechanism, and dross on the surface of molten aluminum and deposited slag at the bottom of the furnace can be removed. Meanwhile, the deslagging mechanism is matched with the special structure combining the square containing cavity and the hemispherical containing cavity, and a remarkable synergistic effect is generated. Wherein the straight edge structure of the square accommodating cavity provides an ideal working surface for scraping dross, and the arc-shaped inner wall of the hemispherical accommodating cavity effectively promotes natural collection and concentration of deposited dross.

The invention relates to the technical field of hot-dip galvanizing, in particular to a hot-dip galvanizing device for a steel structure of a power transmission tower. Comprising a hanging bracket arranged above a galvanizing bath, the hanging bracket is provided with an electromagnetic sliding rail, an electric sliding block is slidably connected into the electromagnetic sliding rail of the hanging bracket, the electric sliding block is fixedly connected with a connecting frame, the connecting frame is provided with two containing plates, and a plurality of holes are formed in the containing plates; the two placing plates are used for limiting a to-be-galvanized part, the connecting frame is slidably connected with an inserting plate, and the inserting plate is provided with through holes with the same number as the holes in one placing plate. The angle steel is driven by the placing plate to move in the galvanizing liquid, meanwhile, the angle steel reciprocates relative to the inserting plate, and the scum layer is blocked by the inserting plate in the angle steel moving process, so that the probability that the contact area between the angle steel and the galvanizing liquid is reduced due to the fact that the scum layer wraps the surface of the angle steel is reduced, and the angle steel galvanizing quality and efficiency are guaranteed.

The invention provides an automatic deslagging iron wire hot-dip galvanizing pot which is characterized in that a zinc pot body is filled with molten zinc, the periphery of an iron wire is immersed in the molten zinc to form a galvanized wire, the galvanized wire is led out from one side of the zinc pot body, an outer blowing ring and a guide plate are mounted in the zinc pot body, and the periphery of the galvanized wire penetrates through the outer blowing ring and then is led out from one side of the zinc pot body; and a guide plate is arranged below the outer blowing ring, and the external compressor can blow compressed gas to the periphery of the galvanized wire through the outer blowing ring. According to the zinc pot, redundant zinc materials on the periphery of a galvanized wire can be blown away and recycled into the zinc pot through compressed air, the compressed air is guided to the position above the position where the galvanized wire is guided out of a galvanizing liquid through the guiding effect of the guiding plate, the liquid level can be blown through the compressed air, and the zinc materials are recycled. The oxide dross is prevented from being attached to the outer surface of the galvanized wire to influence the product quality, the utilization rate of compressed air is improved, the use of electrical components is reduced, and the production and maintenance cost is reduced.

The utility model provides a surface treatment device for a hot galvanized plate, which comprises a zinc dross cleaning machine, the zinc dross cleaning machine comprises a cleaning roller chamber, a cleaning roller is arranged in the cleaning roller chamber, a water cleaning chamber is integrally formed at the bottom of the cleaning roller chamber, a water guide channel is arranged at the bottom of one side of the water cleaning chamber, and the bottom of the water guide channel is connected with a water storage chamber. And a plurality of spray heads are arranged on one side of the water cleaning chamber. Under the work of the water pump, clear water in the water storage chamber is supplied to the spray heads, and the spray heads spray water to fill the clear water in the cleaning roller chamber to flow, so that the water flow flushes residual zinc dross on the outer surface of the cleaning roller, the cleaning effect on the cleaning roller is achieved, and the cleaning effect of the cleaning roller on the zinc dross on the surface of a galvanized sheet is guaranteed; water flow for washing the cleaning roller enters the water storage chamber along the water guide channel to be stored, and water flow circulation for cleaning the cleaning roller is formed under the work of the water pump.

The invention belongs to the technical field of aluminum alloy materials, and provides a new energy automobile lightweight aluminum alloy material and a preparation method thereof.The aluminum alloy material comprises, by weight, 0.6%-1.0% of Si, 0.3%-1.5% of Mg, 1.0%-1.5% of Cu, 3.0%-6.0% of Zn, 0.3%-0.6% of Mn, 1.5%-2.0% of Li, 0.35%-0.5% of Ti, 0.6%-0.7% of rare earth elements and the balance Al and inevitable impurities. The preparation method comprises the following steps: step 1, weighing the raw materials according to the weight ratio, and smelting the raw materials to obtain a mixed melt; 2, a refining agent is added into the mixed melt for refining, standing is carried out, surface scum is removed, and aluminum alloy melt is obtained; 3, the aluminum alloy melt is cast, and a cast ingot is obtained; and 4, the cast ingot is subjected to solution treatment and aging treatment, and the aluminum alloy material is obtained after cooling.

The present application relates to a kind of non-ferrous metal processing waste emulsion low-temperature evaporation treatment method and system, solve how to improve water treatment effect problem.Provide a kind of non-ferrous metal processing waste emulsion low-temperature evaporation treatment method, comprising: S1, pretreatment, the surface oil slick and dross of waste emulsion are collected;S2, low-temperature evaporation, after precision filtration waste emulsion is heated in vacuum environment, make the water in waste emulsion evaporate to separate from waste emulsion, and steam is condensed into water, the concentrated solution after waste emulsion evaporation is collected;S3, subsequent treatment, using activated carbon filter condensate water.Provide a kind of non-ferrous metal processing waste emulsion low-temperature evaporation treatment system, comprising sequentially connected: waste emulsion conditioning tank, oil and dross removal device, precision filtration device, low-temperature evaporation device, activated carbon filter device.Compared with reagent demulsification process, this process does not need to add various demulsifiers and acid and alkali, final effluent conductivity is low, system does not produce sludge, no secondary pollution.

The invention relates to the technical field of aluminum smelting furnace control, in particular to a secondary aluminum smelting furnace control method and device. The method comprises the following steps: arranging a visual detection device to monitor dross in the furnace; a preset metallurgical treatment agent is put into the smelting furnace in batches and multiple times, and the metallurgical treatment agent is used for reacting with impurities in the furnace to form dross; the change of the scum is obtained through the visual detection device, and the impurity reaction characteristics in the smelting process are recognized in real time; and based on the impurity reaction characteristics, the subsequent feeding time, type and / or dosage of the metallurgical treatment agent are dynamically adjusted, and the heating temperature of the smelting furnace is regulated and controlled, so that the temperature in the furnace is kept in an expected interval. The invention provides a secondary aluminum smelting furnace control method and device. The secondary aluminum recycling efficiency can be improved.

The application relates to a high-conductivity Al-Fe alloy containing rare earth Ce and a preparation method thereof, and belongs to the field of preparation and processing of conductive aluminum alloys. The components and contents of the Al-Fe alloy are as follows according to percentage by weight: Fe 0.3-0.7%, Ce+B 0.06-0.12%, Ce:B is 2:1, Ce / Fe is 0.08-0.16, Si<=0.06%, Cu<=0.002%, Ga<=0.014%, Mg<=0.003%, and the balance is aluminum. Pure aluminum ingot is melted, iron is added into the melt in the form of pure iron or Al-Fe intermediate alloy, boron is added into the melt in the form of Al-B intermediate alloy, the melt is purified by using inert gas or refining agent, rare earth cerium is added into the melt in the form of high-purity rare earth cerium or Al-Ce intermediate alloy, the scum on the surface of the melt is removed, and the alloy melt is poured into a mold. The aluminum alloy material prepared by the application has excellent conductive performance and mechanical properties, the conductivity is greater than or equal to 61% IACS, the tensile strength is greater than or equal to 85 MPa, and the elongation is greater than or equal to 33%.

The application discloses a continuous casting aluminum-magnesium alloy production line, which comprises a smelting furnace, a tilting pouring furnace, a continuous ingot casting machine provided with a mold, a plug rod tundish and a slag scraping device arranged in sequence. The application relates to the technical field of aluminum-magnesium alloy preparation, and can be buckled on the mold after pouring to perform vacuumizing operation, effectively avoiding the contact between aluminum liquid and air and preventing the generation of fine defects. Meanwhile, the mold periphery is cooled during the vacuumizing operation, which is helpful to the rapid and uniform cooling of the aluminum liquid and improves the overall quality of the aluminum alloy ingot. In the slag scraping process, inert gas is sprayed to the slag scraping plate, so that the tiny blocky dross is concentrated on the slag scraping plate, and the cleaning effect of the dross is improved. In addition, inert gas is directly blown to the surface of the solution after the dross is scraped, so that the impurity residues are minimized, the contact between the aluminum alloy solution and air is further prevented, and the surface quality of the aluminum alloy ingot is ensured.

The present application belongs to the technical field of non-ferrous metallurgy, and particularly relates to a method for cooperatively removing copper, arsenic, tellurium and lead in crude bismuth, which comprises the following steps: S1, obtaining molten bismuth liquid by melting, adding an oxidizing agent to the molten bismuth liquid, and performing a pre-oxidation reaction under stirring; S2, adding a composite removing agent and a fluxing agent to perform a reaction, and then removing surface dross; the composite removing agent comprises iron powder, bismuth phosphate and sodium sulfide; S3, adding the crude bismuth after step S2 to a vacuum rectification furnace, vacuum heat-insulating, and outputting refined bismuth. Through the cooperative design of pre-oxidation activation, in-situ sulfidation and phosphate slagging, the present application realizes the simultaneous and efficient removal of impurities such as Cu, As, Te and Pb, and the effective recovery of Ag. Subsequent vacuum distillation further removes residual lead in depth, and ensures that the refined bismuth product reaches a high standard.

The application provides a vacuum induction melting device for improving the purity of high-temperature alloy base alloy, which comprises an induction coil, a crucible body arranged in the induction coil, a crucible nozzle arranged on one side of the top end of the crucible body, a slag baffle arranged at the joint of the crucible nozzle and the crucible body, and a filtering slag baffle arranged on the top end of the crucible body, wherein a lifting ring structure is arranged on the side of the filtering slag baffle away from the crucible body. The vacuum induction melting device can better remove the floating dross on the surface of the alloy liquid and the inclusions in the alloy liquid before the alloy liquid flows out of the crucible. The filtering slag baffle can be used for multiple cycles by replacing the filter screen and used for on-line melting. The slag baffle arranged between the crucible nozzle and the crucible pouring nozzle can remove the floating dross on the surface of the alloy liquid twice, thereby improving the purity of the alloy. The method can be used to realize the application proportion of the high-temperature alloy return material and reduce the floating dross brought into the alloy by the return material.