Fabrication method of broad-band high-conductive manganese-zinc ferrite magnetic core
A manganese-zinc ferrite and manufacturing method technology, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor magnetic core, inorganic material magnetism, etc., can solve the problem of high cost, reduce the cost of preparation, and eliminate the problem of environmental pollution , The effect of enhancing market competitiveness
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Embodiment 1
[0022] A manufacturing method of a broadband high-conductivity manganese-zinc ferrite core according to the present invention includes processes such as leaching, reduction, purification, co-precipitation, pre-calcination, refining, ball mill mixing, spray granulation, compression molding and sintering . The specific process is:
[0023] After the calcined powder is refined, put it into a ball mill to grind and mix, and add 60ppm Bi 2 o 3 , 50ppmMoO 3 , 30ppmSiO2 2 and 20ppmCaCO 3 Additives, the slurry after grinding and mixing is sprayed and granulated, and the bulk ratio of the granules is 1.31g / cm 3 , moisture content 0.3%, angle of repose 28.6°, particle distribution 60-180 mesh accounts for 87%, 60-100 mesh accounts for 42%. The chemical purity is very high, the content of impurity elements is extremely low, and the silicon content is 58ppm.
[0024] Put the pellets into the mold and press to form, the forming pressure is 0.8T / cm 2 , the density of the pressed gre...
Embodiment approach 2
[0035] A manufacturing method of a broadband high-conductivity manganese-zinc ferrite core according to the present invention includes processes such as leaching, reduction, purification, co-precipitation, pre-calcination, refining, ball mill mixing, spray granulation, compression molding and sintering . The specific process is:
[0036] After the calcined powder is refined, put it into a ball mill to grind and mix, and add 50ppm Bi 2 o 3 , 50ppmMoO 3 , 15ppm SiO 2 Additives, the slurry after grinding and mixing is sprayed and granulated, and the bulk ratio of the granules is 1.33g / cm 3 , moisture content 0.2%, angle of repose 29.4°, particle distribution 60-180 mesh accounts for 89%, 60-100 mesh accounts for 45%. The chemical purity is very high, the content of impurity elements is extremely low, and the silicon content is 53ppm.
[0037] Put the pellets into the mold and press to form, the forming pressure is 0.9T / cm 2 , the density of the pressed green body is 3.0g / c...
Embodiment approach 3
[0046] A manufacturing method of a broadband high-conductivity manganese-zinc ferrite core according to the present invention includes processes such as leaching, reduction, purification, co-precipitation, pre-calcination, refining, ball mill mixing, spray granulation, compression molding and sintering . The preparation of the wet powder has been patented, and the specific process of the ferrite that matches the powder is:
[0047] After the calcined powder is refined, put it into a ball mill to grind and mix, and add 50ppm Bi 2 o 3 , 40ppmMoO 3 , 10ppm SiO 2 Additives, the slurry after grinding and mixing is sprayed and granulated, and the bulk ratio of the granules is 1.34g / cm 3 , moisture content 0.4%, angle of repose 28.9°, particle distribution 60-180 mesh accounts for 86%, 60-100 mesh accounts for 40%. The chemical purity is very high, the content of impurity elements is extremely low, and the silicon content is 51ppm.
[0048] Put the pellets into the mold and pre...
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