48results about How to "Short manufacturing process" patented technology

The short-process magnesium alloy wire continuous extrusion preparation method comprises the following steps that a, magnesium alloy extrusion materials are prepared, the thickness of the extrusion materials is 0.03-0.1 mm, and the length of the extrusion materials is 0.3-5 mm; b) preheating an extrusion wheel, wherein the preheating temperature is 250-500 DEG C; c) continuous extrusion: continuously introducing inert gas into an extrusion cavity, then feeding the magnesium alloy scraps into the extrusion cavity, and driving the magnesium alloy scraps to pass through an extrusion die along with rotation of an extrusion wheel to extrude a wire; and d) shaping and sizing: carrying out shaping and sizing treatment on the obtained wire material to obtain the magnesium alloy wire material with the final required diameter. According to the method, the problem of lengthy magnesium wire processing flow is solved, the problem of single type of magnesium alloy wires is solved, and the problem of efficient batch production of magnesium welding wires and wires for additive manufacturing of different component systems is solved, so that industrial production of the magnesium alloy wires is realized.

The invention provides a high-damping titanium alloy with a wide temperature range at a high temperature and a preparation method thereof. The titanium alloy is prepared from the following elements in percentage by mass: 3.4 to 5.2 percent of Al, 2.8 to 4.4 percent of Cr, 2.6 to 4.5 percent of Mo, 0.7 to 1.5 percent of Zr, 0.17 to 0.41 percent of O and the balance of Ti. The preparation method of the alloy comprises the following steps: (1) cast ingot smelting; (2) homogenization treatment; (3) beta forging treatment; (4) near beta forging treatment; (5) rolling treatment; and (6) annealing treatment. The method is reasonable in conception, the functional characteristics of wide temperature range and high damping can be obtained at high temperature, the mechanical properties of high strength and high plasticity are achieved, meanwhile, the preparation difficulty of the material is reduced in combination with a traditional titanium alloy machining method, and the method is suitable for large-scale production, popularization and application.

The invention belongs to the field of solar cells, and particularly relates to a hole transport layer, a perovskite solar cell and a preparation method. The hole transport layer comprises a NiOx layer and a self-assembly molecular layer, wherein the self-assembly molecular layer comprises a self-assembly molecular material and a surfactant. The perovskite solar cell comprising the hole transport layer has the advantages of high efficiency, high stability, low production cost and simple preparation process.

The invention discloses an ultrahigh-voltage submarine cable flexible joint insulation recovery method, which comprises the following steps: S1, placement: placing a cable to be processed in a working environment; s2, checking to ensure that the surface of the to-be-processed cable is smooth and clean; s3, mold filling: putting the cable to be processed into an injection mold, installing a cold contraction pipe, and adjusting the position; s4, the cable to be processed in the mold is heated and kept; s5, starting an external plastic extruding machine; s6, the pressure of the mold is kept, discharging is stopped, and the extruder is removed; s7, the injection mold is heated and kept, and cooling is conducted in stages; s8, the injection mold and the cooling pipe are dismantled; according to the recovery method, the steps are simple, only one-time mold installation and extrusion process is needed, the workpiece does not need to be vulcanized after heating is stopped and cooling is completed, and the recovery method can effectively save the preparation process, shorten the process time, improve the production efficiency and be beneficial to guaranteeing the on-time delivery rate of a factory.

The invention discloses a preparation method of a near-net forming refrigerant runner plate, which comprises the following steps: A, aiming at a refrigerant runner plate with a complex structure, designing a mold, a salt core structure and a combination mode of the mold and the salt core structure on the basis of a casting method; b, preparing an alloy raw material, a mold and a salt core, preheating and assembling the mold and the salt core, and casting a melt obtained by melting the alloy raw material to obtain a blank; and C, the blank is subjected to aftertreatment, and the refrigerant runner plate is obtained. According to the invention, the casting process of the runner plate is effectively improved, so that the near-net forming of the runner plate is realized, the machining workload is obviously reduced, the preparation process is shortened, and the cost is reduced.

The invention provides a nano indium oxide catalyst for selective regulation and control of a methanol product synthesized by CO2 hydrogenation, a preparation method and application thereof, and the preparation method comprises the following steps: S1, completely dissolving an indium precursor in a reaction medium, and then heating, stirring and refluxing for a period of time to obtain a mixed solution; s2, after the mixed solution is cooled, washing and centrifuging for multiple times to obtain a solid product; and S3, drying the solid product in a drying oven to obtain the nano indium oxide catalyst. The nano indium oxide catalyst with a controllable particle size and an average particle size of 5 nm-30 nm is prepared by adopting a method of heating, refluxing and decomposing an indium precursor by adopting an organic solvent, can stably operate under a high-temperature condition, is applied to a fixed bed reaction for synthesizing methanol through CO2 hydrogenation, and has the advantages that the yield is high; the catalyst has high CO2 conversion rate and adjustable methanol selectivity.

The invention relates to the technical field of magnesium-air battery electrode materials, and discloses a magnesium-air battery negative electrode material and a preparation method thereof, and the magnesium-air battery negative electrode material comprises the following components by mass: 99.9% of magnesium and 0.1% of germanium. The non-toxic and environment-friendly element germanium is added, and the total adding amount of the element germanium does not exceed 0.1%, so that the cost of the negative electrode material is reduced, the reaction kinetics of the positive electrode is improved, and no second phase is generated. The alloy composed of magnesium and germanium does not have a precipitated phase, has a uniform micron-sized equiaxed grain structure, has an average recrystallization grain size of 16.28 + / -0.29 [mu] m, and has good discharge performance and high dissolution kinetics.

The present invention is applicable to the field of biomedical technology, and provides a preparation method and application of multifunctional nanospheres targeting bacteria. The prepared targeted multifunctional nanospheres have both PDT / PTT functions and target harmful bacteria for antibacterial treatment of periodontitis. By using bismuth silver sulfide hollow nanospheres, photosensitizers and bacterial outer membrane vesicles as raw materials, the raw materials are cheap and the preparation process is simple. The prepared multifunctional nanospheres have unique advantages. They will not cause damage to probiotics, but can accurately target harmful bacteria and exert antibacterial effects, thereby effectively solving the problem of dysbacteriosis. In addition, the direct contact between the multifunctional nanospheres and bacteria will interfere with the electron transfer behavior of the bacteria, which is conducive to strengthening the bactericidal effect on bacteria. The adopted targeting strategy is extremely suitable for the treatment of dysbacteriosis diseases, showing a broad application prospect.

The application belongs to the technical field of powder metallurgy, and particularly discloses a nanoscale oxide particle dispersed aluminum-titanium target material and a preparation method and application thereof. x The nanoscale oxide particle dispersed aluminum-titanium target material has a double-layer structure, including a plated raw material layer and a base layer. x The plated raw material layer is composed of Al, Ti and MeO, wherein the mass percentage of Al and Ti accounts for 80-95%, and the mass percentage of MeO accounts for 5-20%; and the base layer is composed of Al and Ti or pure Al. The nanoscale oxide particle dispersed aluminum-titanium target material and the preparation method and application thereof have the advantages that the aluminum-titanium target material preparation process flow is simple, the production efficiency is high, the method is economic and environmentally friendly, and the method is suitable for batch production; the aluminum-titanium target material prepared by the method solves the binding problem of brittle target material, the target material has high density, meets the demand of hard alloy coating film plating, has no cracking problem in the plating process, and has high coating hardness and good wear resistance.

The application discloses a short-process preparation method of SMA spring and application thereof, and relates to the field of fluid control.The method comprises the following steps: 1) installing an SMA alloy wire reel on a spring machine; 2) starting the spring machine, conveying the SMA alloy wire to a preheating area for preheating, and conveying the preheated SMA alloy wire to a spring winding processing area; and 3) winding and forming the SMA spring according to preset length and shape under the condition that the winding and forming temperature is Af+120 DEG C to Af+240 DEG C.The application adopts a hot winding mode, directly winds and forms the SMA spring under the condition that the winding and forming temperature is Af+120 DEG C to Af+240 DEG C, the spring is stable in size, does not need secondary shaping treatment, the manufacturing efficiency is remarkably improved, and the production cost is effectively reduced.

The invention belongs to the technical field of soft magnetic material processing, and particularly relates to a preparation method of a short-process nanocrystalline magnetic isolation material. The method comprises the following steps: adding an amorphous / nanocrystalline strip into a roll-to-roll film laminating machine, conveying the amorphous / nanocrystalline strip through a compression roller, performing single-sided adhesive film coating treatment, and arranging a linear laser heating device, an electromagnetic induction heating device or a Joule heat treatment device along the width direction of the strip on the other side, coated with the adhesive film, of the strip, linear dynamic crystallization annealing treatment is carried out in the strip conveying process; and the treated strip is subjected to multi-layer attachment and then subjected to magnetic crushing, or the treated strip is subjected to multi-layer attachment and die cutting after magnetic crushing, and the nanocrystalline magnetic isolation material is obtained. A local linear dynamic crystallization annealing treatment process is adopted to replace conventional overall static heat treatment, the controllability of the crystallization process can be improved, and the soft magnetic performance of the material is effectively improved. And the method can be conveniently combined with a film covering protection treatment process before magnetic crushing of the nanocrystalline strip, so that the preparation process flow is reduced, and the production efficiency is effectively improved.

The invention discloses a strong-acid-corrosion-resistant carbon-loaded platinoid all-alloy nano material and a preparation method thereof, and relates to the technical field of new energy materials. The preparation method of the carbon-loaded platinoid all-alloy nano material comprises the following steps: dispersing a carbon carrier in a solvent, adding platinum and copper precursors, dispersing, and adsorbing at constant temperature to obtain a suspension mixed solution; drying by distillation, drying and grinding to obtain a solid compound; calcining in an inert atmosphere, and cooling to obtain a carbon-supported platinoid material; and carrying out strong acid corrosion treatment, washing, drying and grinding to obtain the strong acid corrosion resistant carbon-loaded platinoid all-alloy nano material. The prepared material can keep the crystal structure stable in a strong acid environment and has excellent acid corrosion resistance, and the platinum-copper nano material takes platinum as a solvent and copper as a solute to form a complete alloy phase with the atomic ratio of copper to platinum being greater than or equal to 1: 1. When the material is used as an oxygen reduction catalyst, the atom utilization rate of platinum is high, and meanwhile, the oxygen reduction reaction catalytic activity and long-term stability of the material are remarkably improved.

The invention relates to a device and a method for preparing a high-purity magnesium-zinc alloy, and belongs to the technical field of metal purification. The device for preparing the high-purity magnesium-zinc alloy comprises a smelting unit, a collecting unit, a cooling unit, a heating unit and a vacuum unit. Magnesium-zinc raw materials are smelted in the smelting unit and then subjected to vacuum distillation, impurity elements with low saturated vapor pressure are left in a smelting crucible, impurity elements with high vapor pressure enter a second collecting crucible, and high-purity magnesium-zinc vapor enters a first collecting crucible to be condensed into high-purity magnesium-zinc alloy melt; and further directionally solidifying the magnesium-zinc alloy melt by using a cooling unit to form a high-purity magnesium-zinc alloy cast ingot. The high-purity magnesium-zinc alloy is prepared according to the basic principle that the separation coefficient of magnesium and zinc is close to 1, and magnesium and zinc are volatilized at the same time and are difficult to separate in the vacuum distillation purification process.

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

The application belongs to the technical field of battery manufacturing, and particularly relates to a silicon-carbon negative electrode material, a preparation method thereof and a secondary battery. The preparation method comprises the step of growing a silicon-carbon thin film on the surface of a copper foil by using a cold plasma chemical vapor deposition method, and the deposition source gas is a carbon-containing organosilicon compound or a mixture thereof. The method has a short preparation process, high safety of raw materials, can effectively improve the deposition efficiency, inhibit the crystallization and agglomeration of silicon, improve the carbon coating effect, and enhance the bonding force between the silicon-carbon composite material and the copper foil, so as to improve the overall conductivity, improve the cycle performance and the battery capacity.

The invention discloses a preparation method of a Ni (Al) micro-nano fiber porous material. The method comprises the following steps: 1, smelting elemental nickel and elemental aluminum, and processing to obtain a precursor material; 2, putting sodium hydroxide or potassium hydroxide solid into deionized water, and uniformly stirring to prepare a fibrosis solution; 3, placing the precursor material in a fibration solution, heating, and carrying out fibration reaction to obtain a Ni (Al) fiber porous pre-sintering body; and 4, sintering and curing the Ni (Al) fiber porous pre-sintering body to obtain the Ni (Al) micro-nano fiber porous material. According to the preparation method, an in-situ dealloying method is combined with an in-situ diffusion sintering fibrosis method, the Ni (Al) micro-nano fiber porous material with the micro-nano scale (the wire diameter is 200 nm-1 mu m) and uniform pore distribution is prepared, the porosity and pore precision of the porous material are improved, more catalyst reaction active sites are brought, and the preparation method is suitable for the fields of hyperfine filtration and catalysts.

The invention discloses a preparation method and application of an ordered platinum-cobalt intermetallic compound catalyst, and the preparation method comprises the following steps: step S1, mixing a mixture containing an acidic solution, a platinum-carbon catalyst and a small molecule coordination agent to obtain a mixed solution; s2, heating the mixed solution, adding cobalt salt, adding a reducing agent when the mixed solution is in a homogeneous state, stirring, filtering and drying to obtain a catalyst precursor; and S3, calcining the catalyst precursor in a reducing atmosphere to obtain the ordered platinum-cobalt intermetallic compound catalyst. The platinum-carbon catalyst is directly used as a carrier, and the prepared ordered platinum-cobalt intermetallic compound catalyst is high in order degree, small in particle size and high in oxygen reduction activity.

This invention discloses a magnesium-based composite material containing in-situ self-generated core-shell structured particles and its preparation method, belonging to the field of magnesium-based composite materials. This magnesium-based composite material contains core-shell structured particles generated by an in-situ self-oxidation-reduction reaction of magnesium-rare earth alloy powder and precursor nano-oxide particles; the volume percentage of the core-shell structured particles is 10%~25%; the size of the metal particles in the core is 20nm~100nm, and the thickness of the core is 20nm~200nm; the size of the ceramic particles in the shell is 20nm~30nm, and the thickness of the shell is 20nm~50nm; the precursor nano-oxide particles account for 1wt%~5wt% of the total mass of the magnesium-rare earth alloy powder and the precursor nano-oxide particles. This magnesium-based composite material exhibits good interfacial bonding, high high-temperature strength and plasticity, effectively inhibits crack propagation, and improves the deformation storage energy of the composite material. Its preparation method is simple to operate, has a short process, and low cost.

The invention discloses a magnetic hydrated calcium silicate microcrystalline cellulose nano-microsphere as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. According to the preparation method, the purposes of modifying and optimizing the binding degree are achieved through cellulose chain expansion and dissolution, the complex binding layer preparation process is reduced, and the preparation method has the advantages of being wide in raw material source, simple and convenient in process, low in operation difficulty, high in industrial production replicability and the like. The magnetic hydrated calcium silicate microcrystalline cellulose nano-microsphere prepared by the method is stable in material form and has the characteristics of wide water body coverage range, high heavy metal adsorption efficiency and easiness in separation. As an adsorption material, the material has a wide application prospect in adsorption of heavy metal ions or catalytic degradation of organic matters.

The present invention discloses a microcrystalline phase aggregate prepared from multi-component solid wastes, and a preparation method and application thereof. The present invention uses engineering slag, slag powder, magnesium slag, fly ash and waste glass as main raw materials, designs an artificial aggregate formula according to the chemical composition of wollastonite and anorthite crystals, and adds a nucleating agent to promote the formation and growth of microcrystals, and finally prepares a high-strength artificial aggregate with a microcrystalline glass phase as the matrix. The aggregate prepared by the present invention can utilize a large amount of various solid wastes, and at the same time has a microcrystalline structure of a specified crystal phase, which ensures the low water absorption rate and high strength of the artificial aggregate, and is simpler in preparation process and raw materials, providing a certain basis for its industrialized mass preparation.

This invention discloses an implantable drug delivery chip based on acoustic flow control, comprising a biocompatible substrate, a sharp-edged cantilever micropump, and a drug. The biocompatible substrate has a chamber for containing the drug and an output channel communicating with the chamber. The output channel is used for the output of a liquid containing the drug. The sharp-edged cantilever micropump is disposed in the output channel and includes at least one sharp-edged cantilever unit extending inward into the output channel. The sharp-edged cantilever unit controls the delivery of the liquid containing the drug through acoustic flow effect under ultrasonic excitation. This invention also discloses its fabrication method. This invention enables wirelessly programmable selective drug release from implantable devices, isolates the drug carrier from direct contact with the in vivo environment, and achieves high-precision drug release from the implanted drug delivery device.

The present invention belongs to the field of permanent magnetic materials, and specifically relates to a sintered NdFeB magnetic powder forming release agent and a method for preparing a high coercive force magnet. The specific composition of each component in the release agent is as follows: 1.0-5.0wt.% of zinc stearate, 0.5-2.0wt.% of epoxy resin, 0.5-2.0wt.% of nano Cu, 1.0-10.0wt.% of rare earth organic matter Dy(C5H5)3; the balance is gasoline solvent; when preparing a non-dense green body, the above-mentioned release agent is coated on the inner wall of the mold and the upper and lower pressure heads, and the release agent is coated on the surface of the non-dense green body before sintering. The release agent proposed in the present invention comprehensively considers the multifunctionality of magnet molding lubrication and diffusion. At the same time, in the actual magnet preparation process, there is no need to mix materials, change the existing production process, and no additional long-term heat treatment. The process is simple and the energy consumption is low. While maintaining a high magnetic energy product, the coercive force of the Nd-Fe-B sintered magnet is successfully increased to more than 20kOe. The method is suitable for large-scale production.

This invention belongs to the field of aluminum-based composite material preparation technology, and relates to a continuous casting and rolling method for preparing aluminum-based composite material strips. The method involves preparing a reinforcing preform with a thickness not exceeding the roll gap distance in the aluminum-based composite material strip. Before preparing the aluminum-based composite material strip, the casting rolls are water-cooled and run at a set speed. Molten aluminum is injected into the molten pool, and the liquid level is controlled to a set value. Throughout the preparation process, the molten pool liquid level is maintained at the set value. The molten aluminum cools and solidifies upon contact with the roll surface of the casting rolls. Under the casting action of the two casting rolls, an aluminum alloy strip is formed and continuously output from the lower end of the roll gap. During the preparation process, the reinforcing preform moves from top to bottom at a set speed and is immersed in the molten aluminum pool. The molten aluminum penetrates into and fills the interior of the reinforcing preform. The reinforced preform, filled with molten aluminum, gradually solidifies as it moves to the roll gap until it is completely solidified. Then, under the casting force of the two casting rolls, it undergoes rolling deformation to form the aluminum-based composite material strip.

The invention provides a method for preparing iron phosphate from phosphorus and potassium ores and comprehensively utilizing resources, and belongs to the crossing field of hydrometallurgy and chemical engineering, the method comprises the following steps: S1, slowly adding a hydrochloric acid solution into the phosphorus and potassium ores and iron powder, carrying out solid-liquid separation after the reaction is ended to obtain a leaching solution and acid leaching tailings, and using the acid leaching tailings for preparing a potassium fertilizer; s2, hydrogen peroxide is added into the leachate in the step S1 to oxidize Fe < 2 + >, then ammonium carbonate is added, the pH of the solution is adjusted to 1.5-2.0, crude iron phosphate dihydrate and primary precipitation mother liquor are obtained, the crude iron phosphate dihydrate is washed, dried and calcined, and battery-grade iron phosphate is obtained; s3, ammonium carbonate continues to be added into the primary precipitation mother liquor in the S2, the pH is adjusted to 7.0-7.5, crude CaCO3 and secondary precipitation mother liquor are obtained, and the crude CaCO3 is washed and dried to obtain a calcium carbonate product; and S4, sequentially carrying out evaporation concentration and cooling crystallization on the secondary precipitation mother liquor in S3 to obtain an ammonium chloride product. According to the method, all elements in the phosphorus-potassium ore are comprehensively utilized, and the method has important practical significance for developing and using phosphorus-potassium ore resources.

The invention discloses a method for preparing high-purity gold through purification and one-step electrolysis of crude gold liquid, and relates to the field of high-purity precious metal preparation. According to the method, the crude gold with the purity of 90% is dissolved through a sodium chlorate-hydrochloric acid method, the obtained gold liquid is purified, the purified gold liquid is prepared into the electrolyte for electrolysis, the replenishing liquid is continuously added in the electrolysis process to maintain the gold ion concentration, 5N-grade high-purity gold can be obtained through one-step electrolysis, the electrolysis process is shortened, secondary electrolysis is not needed, the production efficiency is improved, and the method is suitable for industrial production. The production cost is reduced.

The invention discloses a forged aluminum alloy product and a preparation method thereof and an aluminum alloy forged piston, a cast ingot with the radial size of 50-150mm is obtained by at least controlling the continuous casting speed to be more than 200mm / min and the overall cooling rate of the cast ingot to be greater than or equal to 15 DEG C / s, and then soaking treatment, cooling and forging are sequentially performed; in the product, after T6 heat treatment, the residual as-cast structure is below 10%, the sub-grain size is less than 30 microns, the area percentage of the sub-grain structure is more than 60%, the average size of eutectic silicon is below 5 microns, the roundness is more than 0.6, the average size of dispersion particles is 0.1-2 microns, and the number density is 105-1011 particles / cm < 2 >; according to the preparation method, ingot casting extrusion and related procedures which are necessary in the conventional process can be omitted, the preparation process is greatly shortened, the strength, plasticity and other performance are also remarkably improved, and the preparation method can be used for the aluminum alloy forged piston.

This invention relates to a spray-formed microspherical modified titanium-silicon molecular sieve catalyst, its preparation method, and its application in the production of epoxide, belonging to the field of petrochemical catalyst preparation technology. The method first prepares a spray mother liquor containing titanium-silicon molecular sieves, alumina sol, and a pore-forming agent. Then, the spray mother liquor is spray-dried to form a spray-formed product. This product is then dried and calcined to obtain a catalyst precursor. A stable impregnation solution is prepared by mixing a silanizing agent, disodium ethylenediaminetetraacetate, and cyclohexane. The impregnation solution is used to impregnate the catalyst precursor using an equal-volume impregnation method. The catalyst precursor is then removed, dried, and calcined to obtain the spray-formed microspherical modified titanium-silicon molecular sieve catalyst. This catalyst can be applied in the catalytic liquid-phase epoxidation of butene to synthesize epoxide. The method of this invention effectively controls the catalyst structure, and by regulating the structure-property relationship, it greatly improves the production efficiency of epoxide.

The invention discloses a smelting method of a titanium-iron alloy, which comprises the following steps: taking low-grade titanium minerals such as titanium concentrate and titanium slag as titanium ore raw materials, taking carbon and aluminum as reducing agents, and realizing semi-continuous preparation of the titanium-iron alloy in a carbothermic and aluminothermic two-stage reduction mode. According to the method disclosed by the invention, selective directional reduction of an iron element is carried out by adopting a'low-first and high-second 'proportioning mode in a carbon thermal reduction process, so that a high-quality intermediate titanium raw material and low-carbon molten iron are obtained; in the aluminothermic reduction process, a'metal slag blending 'batching mode is adopted for titanium slag-metal bidirectional strengthening reduction, titanium oxidation and uniform mixing of titanium and iron melts are achieved, and finally a titanium-iron alloy product with chemical components meeting the labeling requirements is obtained.

The invention provides a cyclic utilization method and device of acid-containing washing water, and the method comprises the following steps: carrying out reverse osmosis on the acid-containing washing water to obtain a filtrate and a trapped fluid; wherein the trapped fluid comprises chloride ions and silicate ions trapped in the reverse osmosis process and metal ions on the surface of strip steel; the acid-containing washing water comprises an acid mist washing solution and / or rinsing water after strip steel pickling; absorbing furnace gas by using the trapped fluid to obtain regenerated acid; the furnace gas comprises HCl gas; and treating the filtrate through a cation bed, an anion bed and a mixed bed in sequence to obtain desalted water. In the cyclic utilization method of the acid-containing washing water, the trapped fluid absorbs the furnace gas to obtain the regenerated acid, so that the salt substances and the free acid are utilized as components of the regenerated acid, the loss rate of acid circulation of acid pickling and acid regeneration is reduced, and hydrochloric acid is regenerated during acid regeneration by recycling chloride ions. The filtrate is treated by the cation bed, the anion bed and the mixed bed to obtain desalted water, so that the preparation process of the desalted water is shortened, and the filtrate is recycled.

The present invention discloses an alloy powder preparation device and method, and relates to the technical field of metal powder manufacturing. The alloy powder preparation device includes an atomization bin, a gas pressure component, a plasma torch and a wire feeding component. The gas pressure component is connected to the atomization bin, and the gas pressure component is used to adjust the gas pressure and gas content in the atomization bin; the plasma torch is arranged on the atomization bin, and a heating head for placing a first material is provided on the plasma torch, wherein one end of the heating head provided on the plasma torch extends into the atomization bin; the wire feeding component is arranged on the atomization bin, and the wire feeding component is used to convey the second material to dock with the heating head; the plasma torch is used to melt the first material and the second material to form an alloy solution, and the gas pressure component is also used to atomize the alloy solution to form granular powder. The technical solution of the present invention shortens the entire metal powder preparation process, reduces preparation time, and saves preparation cost.