A preparation method of a soft magnetic composite material with high magnetic flux
A technology of soft magnetic composite materials and high magnetic flux, which is applied in the fields of magnetism of inorganic materials, manufacture of inductors/transformers/magnets, electrical components, etc. Changes, low saturation flux density of soft magnetic composite materials, etc., to achieve the effect of improving the surface insulation performance of magnetic powder, reducing thermal stress residue, and strong high temperature resistance
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[0026]Put 100-120g of pyrolusite ore in a pulverizer and pulverize for 3-4 hours, pass through a 100-mesh sieve to obtain sieved pyrolusite powder, put the pyrolusite powder in a conical flask, and add 40-50g of iron powder into the conical flask , 200-300mL of sulfuric acid solution with a mass fraction of 45% and 20-30g of orange peel were stirred and mixed for 20-30min, the conical flask was moved into a water bath, heated to 50-55°C, and kept for 2-3h to obtain the leaching solution; Add 70-80g of manganese dioxide to the leaching solution, heat up to 80-90°C, and react for 2-3 hours to obtain an oxidized leaching solution. Continue to add 30-40g of manganese carbonate to the oxidizing leaching solution, and stir until no bubbles are generated. Suction filtration, remove the filter residue to obtain the filtrate, transfer the filtrate to a beaker, add ammonia water with a mass fraction of 25% to the beaker, adjust the pH to 6.5-7.0, stir for 5-10 minutes, filter and separat...
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