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Method for preparing isotropic calcium lanthanum permanent magnetic ferrite material
The invention relates to a method for preparing an isotropic calcium-lanthanum permanent magnetic ferrite material, which comprises the following steps: preparing 0.9-1 part of Ca, 0.05-0.1 part of La and 5.7-6 parts of Fe; the preparation method comprises the following steps: metering the raw materials of CaCO3, La2O3 and Fe2O3 with qualified purity according to the weight calculated by the formula, uniformly dry-mixing in a dry mixer, pre-sintering to obtain a pre-sintered material, carrying out wet ball-milling and crushing on the pre-sintered material by a ball mill, discharging after reaching a certain particle size, and sintering to obtain the high-purity CaCO3-La2O3-Fe2O3 composite material. And carrying out magnetic field orientation molding, oxygenation sintering and precise grinding on the obtained slurry to obtain the isotropic calcium lanthanum permanent magnetic ferrite material magnet. The material provided by the invention is a strontium-free isotropic ferrite material, and has the advantage of lower cost than other anisotropic ferrite materials.
本发明涉及一种制造各向同性钙镧永磁铁氧体材料的方法，其制造方法步骤如下：Ca：0.9～1份、La：0.05～0.1份、Fe5.7～6份；在将纯度合格的CaCO3、La2O3、Fe2O3原材料按配方计算的重量进行计量，经干混机中干混均匀后预烧得到预烧料，再将所述预烧料经球磨机湿法球磨粉碎，达到一定粒度后出料，将得到的料浆进行磁场取向成型、充氧烧结、精密磨加工得到各向同性钙镧永磁铁氧体材料磁体。本发明材料是一类不含锶的各向同性铁氧体材料，具有比其他各向异性铁氧体材料成本更低的优点。
Method for preparing isotropic calcium lanthanum permanent magnetic ferrite material
The invention relates to a method for preparing an isotropic calcium-lanthanum permanent magnetic ferrite material, which comprises the following steps: preparing 0.9-1 part of Ca, 0.05-0.1 part of La and 5.7-6 parts of Fe; the preparation method comprises the following steps: metering the raw materials of CaCO3, La2O3 and Fe2O3 with qualified purity according to the weight calculated by the formula, uniformly dry-mixing in a dry mixer, pre-sintering to obtain a pre-sintered material, carrying out wet ball-milling and crushing on the pre-sintered material by a ball mill, discharging after reaching a certain particle size, and sintering to obtain the high-purity CaCO3-La2O3-Fe2O3 composite material. And carrying out magnetic field orientation molding, oxygenation sintering and precise grinding on the obtained slurry to obtain the isotropic calcium lanthanum permanent magnetic ferrite material magnet. The material provided by the invention is a strontium-free isotropic ferrite material, and has the advantage of lower cost than other anisotropic ferrite materials.
本发明涉及一种制造各向同性钙镧永磁铁氧体材料的方法，其制造方法步骤如下：Ca：0.9～1份、La：0.05～0.1份、Fe5.7～6份；在将纯度合格的CaCO3、La2O3、Fe2O3原材料按配方计算的重量进行计量，经干混机中干混均匀后预烧得到预烧料，再将所述预烧料经球磨机湿法球磨粉碎，达到一定粒度后出料，将得到的料浆进行磁场取向成型、充氧烧结、精密磨加工得到各向同性钙镧永磁铁氧体材料磁体。本发明材料是一类不含锶的各向同性铁氧体材料，具有比其他各向异性铁氧体材料成本更低的优点。
Method for preparing isotropic calcium lanthanum permanent magnetic ferrite material
一种制造各向同性钙镧永磁铁氧体材料的方法
LU YANGCHENG (Autor:in) / YANG HUI (Autor:in) / LEI QINGSONG (Autor:in)
24.01.2023
Patent
Elektronische Ressource
Chinesisch
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