Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing permanent magnetic ferrite by microwave pretreatment
The invention relates to the field of permanent magnetic materials, and discloses a method for preparing permanent magnetic ferrite by microwave pretreatment, which comprises the following steps: 1) crushing iron scale and then carrying out microwave pretreatment under an oxygen supply condition to obtain pre-oxidized iron scale without an oil film; 2) mixing the iron scale with strontium carbonate or barium carbonate, carrying out wet ball milling, and dehydrating to obtain a dehydrated material; 3) transferring the dehydrated material into a clustering and pre-sintering integrated kiln for clustering and pre-sintering to obtain a pre-sintered material; and 4) preparing the pre-sintered material into the permanent magnetic ferrite. On one hand, the iron scale raw material is subjected to oil removal and oxidation by adopting microwave pretreatment, so that foams caused by high oil content of the iron scale during ball milling can be avoided, and by adopting the microwave pretreatment for oxidation, the energy consumption is lower, and the efficiency is higher; and on the other hand, the automatic agglomeration of the oxidized dehydrated material in the agglomeration and presintering integrated kiln can be realized by adopting the agglomeration and presintering integrated kiln, and independent pelletizing is not needed, so that the production continuity of the process is better, and the production efficiency can be obviously improved.
本发明涉及永磁材料领域，公开了一种利用微波预处理制备永磁铁氧体的方法，包括：1）将铁鳞破碎后在供氧条件下进行微波预处理，得到除油膜且预氧化的铁鳞；2）将铁鳞与碳酸锶或碳酸钡混合，湿法球磨，脱水后获得脱水料；3）将脱水料转移至成团预烧一体窑中进行成团和预烧，得到预烧料；4）将预烧料制备为永磁铁氧体。一方面，本发明采用微波预处理对铁鳞原料进行除油和氧化，可避免球磨时因铁鳞含油量高而产生泡沫，采用微波预处理进行氧化能耗更低，效率更高。另一方面，采用本发明的成团预烧一体窑可实现氧化后的脱水料在成团预烧一体窑中自动成团，无需单独造球，因此本发明工艺的生产连续性更好，可显著提升生产效率。
Method for preparing permanent magnetic ferrite by microwave pretreatment
The invention relates to the field of permanent magnetic materials, and discloses a method for preparing permanent magnetic ferrite by microwave pretreatment, which comprises the following steps: 1) crushing iron scale and then carrying out microwave pretreatment under an oxygen supply condition to obtain pre-oxidized iron scale without an oil film; 2) mixing the iron scale with strontium carbonate or barium carbonate, carrying out wet ball milling, and dehydrating to obtain a dehydrated material; 3) transferring the dehydrated material into a clustering and pre-sintering integrated kiln for clustering and pre-sintering to obtain a pre-sintered material; and 4) preparing the pre-sintered material into the permanent magnetic ferrite. On one hand, the iron scale raw material is subjected to oil removal and oxidation by adopting microwave pretreatment, so that foams caused by high oil content of the iron scale during ball milling can be avoided, and by adopting the microwave pretreatment for oxidation, the energy consumption is lower, and the efficiency is higher; and on the other hand, the automatic agglomeration of the oxidized dehydrated material in the agglomeration and presintering integrated kiln can be realized by adopting the agglomeration and presintering integrated kiln, and independent pelletizing is not needed, so that the production continuity of the process is better, and the production efficiency can be obviously improved.
本发明涉及永磁材料领域，公开了一种利用微波预处理制备永磁铁氧体的方法，包括：1）将铁鳞破碎后在供氧条件下进行微波预处理，得到除油膜且预氧化的铁鳞；2）将铁鳞与碳酸锶或碳酸钡混合，湿法球磨，脱水后获得脱水料；3）将脱水料转移至成团预烧一体窑中进行成团和预烧，得到预烧料；4）将预烧料制备为永磁铁氧体。一方面，本发明采用微波预处理对铁鳞原料进行除油和氧化，可避免球磨时因铁鳞含油量高而产生泡沫，采用微波预处理进行氧化能耗更低，效率更高。另一方面，采用本发明的成团预烧一体窑可实现氧化后的脱水料在成团预烧一体窑中自动成团，无需单独造球，因此本发明工艺的生产连续性更好，可显著提升生产效率。
Method for preparing permanent magnetic ferrite by microwave pretreatment
一种利用微波预处理制备永磁铁氧体的方法
LIAN JIANGBIN (Autor:in) / WANG JIHUI (Autor:in) / MA XIAOWEI (Autor:in) / KIM HO-YUN (Autor:in)
19.04.2024
Patent
Elektronische Ressource
Chinesisch
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