13 results about "Electrolytic iron" patented technology

The invention belongs to the technical field of iron-silicon-aluminum magnetic materials, and provides a method for preparing an iron-silicon-aluminum magnetic powder core by using silicon steel waste, which comprises the following steps: powder preparation, proportioning, coating, granulation, pressing and annealing. According to the method, the silicon steel waste serves as the raw material, the silicon steel waste, the silicon iron, the aluminum ingot, the ferrophosphorus and the electrolytic iron are placed in the vacuum induction furnace to be smelted and then prepared into powder, the prepared iron-silicon-aluminum powder is coated, granulated, pressed and annealed to obtain the iron-silicon-aluminum magnetic powder core, high-value utilization of the silicon steel waste is achieved, the raw material cost is remarkably reduced, and environmental protection and energy saving are achieved.

The invention belongs to the technical field of metal purification and preparation, and particularly relates to a method for preparing high-purity iron through magnetized electrolyte assisted electrolysis. The method comprises the following steps: 1) obtaining a hydrated ferrous salt solution as an electrolyte; 2) removing impurities from the electrolyte obtained in the step 1); (3) magnetizing the electrolyte subjected to impurity removal; and (4) the magnetized electrolyte obtained in the step (3) is placed in an electrolysis device to be electrolyzed, pure iron with the purity larger than or equal to 99.9% is obtained on a cathode, and in the electrolysis device, the anode material is pure iron with the purity larger than or equal to 99%. According to the invention, the electrolyte is magnetized in a uniform magnetic field, and the magnetized electrolyte is electrolyzed. In the electrolysis process, the deposition rate of the electrolytic iron on the cathode plate is increased, the energy consumption in the electrolysis process is reduced, and meanwhile, the integrity of the electrolytic iron on the cathode plate is also improved.

The invention discloses a wear-resistant steel-based mold material for plastic magnetic injection molding and a preparation method of the wear-resistant steel-based mold material, and relates to the technical field of mold steel materials. When the steel-based mold material is prepared, metal chromium, titanium powder, ferromolybdenum, graphite, ferroboron, lanthanum iron and electrolytic iron are weighed according to a specific proportion, and a cast ingot is obtained through vacuum induction melting and argon protection pouring; a calcium fluoride-aluminum oxide-calcium oxide mixed slag system serves as a remelting medium, electroslag remelting, homogenization treatment and oil quenching are conducted on the cast ingot, and a steel ingot is obtained; the steel ingot is subjected to multidirectional forging and temperature-controlled cooling, and forged die steel is obtained; and finally, the forging die steel is subjected to gas nitriding subzero treatment and multi-stage tempering, gradient titanium nitride and chromium nitride metal ceramic layers are induced to be formed on the surface, and the wear-resistant steel-based die material for plastic magnetic injection molding is prepared. The prepared steel-based mold material has high hardness, high wear resistance and corrosion resistance.

The invention provides a method for preparing electrolytic iron powder from laterite-nickel ore hydrometallurgy tailings. The method comprises the following steps: carrying out deep acid leaching treatment on the laterite-nickel ore hydrometallurgy tailings, and carrying out solid-liquid separation to obtain leachate and acid leaching residues; mixing the leachate with a reducing agent to carry out reduction reaction, adjusting the pH value of the leachate to carry out aluminum and chromium removal reaction, and adding sodium sulfide into a solution obtained by the aluminum and chromium removal reaction to carry out nickel removal reaction, so as to obtain impurity-removed liquid; and electrodeposition treatment is conducted on the liquid obtained after impurity removal, a cathode is stripped after electrodeposition treatment, the cathode is crushed and then subjected to annealing reduction treatment, and the electrolytic iron powder is obtained. According to the method, through the acid leaching-impurity removal-electrodeposition-annealing reduction process, the difficulty of sulfur in the iron ore concentrate process and the interference of chromium in smelting reduction are avoided, the high-purity electrolytic iron powder can be obtained under the condition of low energy consumption, and high-value recycling of iron resources in the laterite-nickel ore hydrometallurgy process is achieved.

The invention belongs to the field of energy and metallurgy. Specifically, the invention discloses an electrolytic iron system based on multi-energy coupling and a surface topography multi-scale control method. A nano-micro-scale special surface microstructure is constructed on the cathode seed plate through a combined process of laser engraving, sand blasting treatment, anodic dissolution and photovoltaic current pre-coating. And meanwhile, magnetic field ultrasonic microwave multi-physical field enhanced ore phase reconstruction, acidolysis, anodic dissolution, photovoltaic current pre-coating, iron electrolysis and other procedures are adopted, and the reaction performance is improved. In the multi-scale control process of the surface appearance of the electrolytic iron, a multi-energy coupled clean energy supply system is adopted. According to the method, the non-uniform deposition problems such as cracking, blackening and dendritic crystals in the iron electrolysis process can be remarkably inhibited, and the current efficiency and the production stability are improved. The method is suitable for surface morphology regulation and control of pure iron prepared through large-scale continuous iron ore electrolysis, and has the advantages of being high in efficiency, low in energy consumption, free of pollution, ultralow in carbon dioxide emission and the like.

To provide a method for producing electrolytic iron foil having high purity and excellent in smoothness and flexibility.SOLUTION: The method for producing an electrolytic iron foil includes a step of forming an electrolytic iron foil F on the surface of a cathode drum 1 by using the cathode drum 1 rotating in a state of being at least partially immersed in an electrolytic solution 3 and an anode 2 arranged so as to face the cathode drum 1 in the electrolytic solution 3 and passing an electric current through the cathode drum 1 and the anode 2. The temperature of the electrolytic solution 3 is 50 to 90 °C, the content of Fe2 + in the electrolytic solution 3 is 40 to 200g / L, the pH of the electrolytic solution 3 is 2.0 to 4.0, and the density of the current is 50 to 500A / m2.SELECTED DRAWING: Figure 1

This invention relates to a method for extracting iron from red mud using microwave biomass reduction-sulfuric acid leaching-electrolytic deposition, belonging to the field of resource comprehensive utilization and hydrometallurgical technology. The method first involves uniformly mixing red mud with a biomass reducing agent, then using a microwave field for rapid and efficient reduction, converting the sparingly soluble iron oxides in the red mud into readily soluble elemental iron or low-valence iron oxides. The reduction product is then leached with sulfuric acid, allowing the iron to enter the solution and separate from most impurities. Finally, the iron-rich leachate is electrolytically deposited to directly obtain high-purity electrolytic iron. This invention utilizes the selectivity and holistic nature of microwave heating, coupled with the green and renewable characteristics of the biomass reducing agent, to achieve efficient, energy-saving, and environmentally friendly recovery of iron from red mud. The process is short, energy-efficient, and has significant industrial application prospects.

This invention discloses a method for preparing high-frequency, low-loss Fe-Ni-Mo permalloy powder using an atomization and heat treatment process, relating to the field of soft magnetic functional materials technology. The invention includes the following steps: first, electrolytic iron, electrolytic nickel, molybdenum plate, ferroboron, silicon, and sponge yttrium are smelted to obtain an alloy liquid; then, the alloy liquid is atomized and solidified to form powder; the resulting atomized powder is cleaned and treated in an argon atmosphere at 600-620℃ for 30-40 minutes; subsequently, it is coated with Y-Al-F-O sol, followed by silica coating; finally, it is treated in an argon atmosphere at 380℃ for 30-40 minutes, and after sieving, high-frequency, low-loss Fe-Ni-Mo permalloy powder is obtained. This preparation method effectively improves the insulation resistance, high-frequency low-loss capability, and frequency stability of the permeability of the Fe-Ni-Mo permalloy powder.

The invention provides a microwave preheating mineral powder-molten salt electrolysis ironmaking co-production system and a co-production method, and relates to the technical field of green low-carbon ironmaking systems and methods. The system comprises a feeding unit, a microwave preheating device, a molten salt electrolytic bath, a product treatment device and a gas circulation unit which are sequentially connected through a pipeline. The microwave preheating device is provided with a reducing gas inlet, preheated mineral powder is directly fed into a molten salt electrolytic bath, direct current is introduced into a molten salt medium for electrolysis, metal iron liquid is obtained at a cathode, and a gas product is separated out at an anode; and anode gas generated by electrolysis and tail gas generated by preheating are purified and separated by the gas circulating unit and then are recycled. According to the method, the high efficiency of microwave preheating and the greenness of molten salt electrolysis are combined, so that the energy consumption is obviously reduced, the method is green and low-carbon, the process is short, the production efficiency is high, the raw material adaptability is wide, high-value products are co-produced, and industrial large-scale production, popularization and application are facilitated.

This invention belongs to the technical field of iron-silicon-aluminum magnetic materials and provides a method for preparing iron-silicon-aluminum magnetic powder cores using silicon steel waste. The method includes the following steps: powder preparation, proportioning, coating, granulation, pressing, and annealing. This invention uses silicon steel waste as raw material, which is smelted with ferrosilicon, aluminum ingots, ferrophosphorus, and electrolytic iron in a vacuum induction furnace and then powdered. The resulting iron-silicon-aluminum powder is then coated, granulated, pressed, and annealed to obtain the iron-silicon-aluminum magnetic powder core. This method achieves high-value utilization of silicon steel waste, significantly reduces raw material costs, and is environmentally friendly and energy-saving.

The invention relates to the technical field of electrolytic metallurgy, in particular to a method for preparing pure iron through acid solution electrolysis. Comprising the following steps: separating a cathode chamber from an anode chamber by using a diaphragm in an electrolytic cell; the electrolyte of the anode chamber is a Na2SO4 or K2SO4 solution; the electrolyte in the cathode chamber is a mixed solution of FeSO4 and Na2SO4 or K2SO4, wherein the amount of substance of Na2SO4 or K2SO4 is 30%-50% of the amount of substance of FeSO4; and the pH of the electrolyte in the cathode chamber and the pH of the electrolyte in the anode chamber are the same and are both 2.5-4. According to the method, a proper amount of Na2SO4 or K2SO4 is added into the electrolyte in the cathode chamber, the conductivity of the electrolyte is maintained, the electrolytic efficiency is improved, meanwhile, the nanoscale iron powder is adopted for adjusting the pH of the electrolyte in the cathode chamber, Fe (OH) 3 colloid is prevented from being generated, the surface flatness of electrolytic iron is guaranteed, and therefore the quality, efficiency and purity of pure iron preparation are effectively improved.

The invention discloses a light-storage-iron-based material circulation co-production system, and the system comprises an iron flow battery which is used for charging through photovoltaic power distributed by an intelligent micro-grid system, reducing Fe < 2 + > in a negative electrode electrolyte into metal iron, and depositing the metal iron; the molten electrolytic iron device comprises an electrolytic bath; the ternary composite anode has a gradient porous structure; the molten electrolytic iron device is used for carrying out electrolytic purification on iron deposited on the negative electrode of the iron liquid flow battery to obtain an iron ingot; the lithium iron phosphate synthesis system is used for enabling the iron ingot produced by the molten electrolytic iron device to react with Li2CO3 and ammonium dihydrogen phosphate NH4H2PO4 to obtain LiFePO4; the monitoring system is used for monitoring the electrolyte concentration and the electrode temperature in the molten electrolytic iron device; and the EMS system is configured to execute an energy distribution algorithm to regulate and control the real-time input power of the molten electrolytic iron device based on the electrolyte concentration and the temperature of the electrode. According to the method, CO2 emission per ton of iron does not exceed 0.38 ton, and the performance of the electrolyte is reduced by 1t after 50 times of circulation; 2%, the payback period is lt; 5 years.