Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of low-cost high-remanence barium ferrite
The invention discloses a preparation method of low-cost high-remanence barium ferrite, and belongs to the technical field of ferrite magnetic materials. The method comprises the following steps: mixing iron ore concentrate with barium carbonate, drying, pelletizing, and pre-sintering for the first time; the preparation method comprises the following steps: pre-sintering iron ore concentrate and barium carbonate, crushing a pre-sintered material after the pre-sintering is finished, adding a secondary auxiliary material, mixing, carrying out secondary ball milling, pressing into a blank after the ball milling is finished, and carrying out secondary sintering to finally obtain the permanent magnetic barium ferrite with high remanence, the hard magnetic ferrite is prepared by using the iron ore concentrate instead of iron oxide red and barium carbonate instead of strontium carbonate, so that the manufacturing cost of the hard magnetic ferrite is reduced; compared with common iron oxide red, ferrite prepared from iron ore concentrate under the same condition is more excellent in magnetic performance, two-stage roasting oxidation heating is adopted, the temperature is firstly increased to the oxidation temperature, then the temperature is slowly increased to the crystal transformation temperature, it is guaranteed that the super iron ore concentrate is fully oxidized in the presintering stage, and the magnetic performance of barium ferrite is improved.
本发明公开了一种低成本高剩磁钡铁氧体的制备方法，属于铁氧体磁性材料技术领域。本发明将铁精矿与碳酸钡混合后，烘干后造球进行一次预烧。预烧结束后将预烧料破碎后，加入二次辅料混合再进行二次球磨，球磨结束后压制成毛坯再进行二次烧结，最终得高剩磁的永磁钡铁氧体，本发明以铁精矿代替铁红，碳酸钡代替碳酸锶制备硬磁铁氧体，不仅降低了硬磁铁氧体的制造成本，而且相比普通铁红，相同条件下铁精矿制备的铁氧体磁性能更加优秀，采用了两段式的焙烧氧化升温，先升温至氧化温度，再缓慢升温至晶型转变温度，保证超级铁精矿在预烧阶段被充分氧化，提升了钡铁氧体的磁性能。
Preparation method of low-cost high-remanence barium ferrite
The invention discloses a preparation method of low-cost high-remanence barium ferrite, and belongs to the technical field of ferrite magnetic materials. The method comprises the following steps: mixing iron ore concentrate with barium carbonate, drying, pelletizing, and pre-sintering for the first time; the preparation method comprises the following steps: pre-sintering iron ore concentrate and barium carbonate, crushing a pre-sintered material after the pre-sintering is finished, adding a secondary auxiliary material, mixing, carrying out secondary ball milling, pressing into a blank after the ball milling is finished, and carrying out secondary sintering to finally obtain the permanent magnetic barium ferrite with high remanence, the hard magnetic ferrite is prepared by using the iron ore concentrate instead of iron oxide red and barium carbonate instead of strontium carbonate, so that the manufacturing cost of the hard magnetic ferrite is reduced; compared with common iron oxide red, ferrite prepared from iron ore concentrate under the same condition is more excellent in magnetic performance, two-stage roasting oxidation heating is adopted, the temperature is firstly increased to the oxidation temperature, then the temperature is slowly increased to the crystal transformation temperature, it is guaranteed that the super iron ore concentrate is fully oxidized in the presintering stage, and the magnetic performance of barium ferrite is improved.
本发明公开了一种低成本高剩磁钡铁氧体的制备方法，属于铁氧体磁性材料技术领域。本发明将铁精矿与碳酸钡混合后，烘干后造球进行一次预烧。预烧结束后将预烧料破碎后，加入二次辅料混合再进行二次球磨，球磨结束后压制成毛坯再进行二次烧结，最终得高剩磁的永磁钡铁氧体，本发明以铁精矿代替铁红，碳酸钡代替碳酸锶制备硬磁铁氧体，不仅降低了硬磁铁氧体的制造成本，而且相比普通铁红，相同条件下铁精矿制备的铁氧体磁性能更加优秀，采用了两段式的焙烧氧化升温，先升温至氧化温度，再缓慢升温至晶型转变温度，保证超级铁精矿在预烧阶段被充分氧化，提升了钡铁氧体的磁性能。
Preparation method of low-cost high-remanence barium ferrite
一种低成本高剩磁钡铁氧体的制备方法
LI XIN (Autor:in) / PEI XIAODONG (Autor:in) / WANG FAN (Autor:in) / QIAN YOUJUN (Autor:in) / QIU WEIGUO (Autor:in) / OUYANG JIANTAO (Autor:in) / SHE SHIJIE (Autor:in) / LIU CHEN (Autor:in)
03.02.2023
Patent
Elektronische Ressource
Chinesisch
Preparation technology of high-remanence M-type barium ferrite for self-biased circulator
| Europäisches Patentamt | 2022
Low-cost high-remanence permanent magnetic ferrite and preparation method thereof
| Europäisches Patentamt | 2021
Garnet ferrite material with high power and high remanence ratio and preparation method thereof
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2021