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Preparation method and application of permanent magnetic ferrite pre-sintering material with high tap density
The invention relates to the technical field of permanent magnetic ferrite pre-sintering materials, and discloses a preparation method and application of a permanent magnetic ferrite pre-sintering material with high tap density. The preparation method of the pre-sintered material comprises the following steps: mixing the raw materials of the pre-sintered material comprising strontium carbonate and iron oxide red, adding water, carrying out ball milling to obtain ball-milled slurry, and drying to remove water; carrying out ball milling, vibration and crushing on the dried and dewatered material at the holding temperature of more than or equal to 80 DEG C to obtain powder; pre-sintering the obtained powder to obtain a pre-sintered material; compared with the prior art that the ferrite pre-sintering material is firstly processed into material balls and then pre-sintered, the preparation method provided by the invention has the advantages that the ball-milled slurry is further subjected to vibration milling treatment under a certain heat preservation condition after being dried, so that primary ferritization is realized, and then pre-sintering is performed. The obtained pre-sintered material is high in tap density and sufficient in ferritization reaction, and the residual magnetism and the maximum magnetic energy product of the prepared permanent magnetic ferrite can be improved.
本发明涉及永磁铁氧体预烧料技术领域，公开了一种高振实密度的永磁铁氧体预烧料的制备方法及应用。所述预烧料的制备方法包括将包括碳酸锶、铁红的预烧料的各原料混合，加水球磨得球磨料浆，然后干燥去水；将干燥去水后的物料在保温温度≥80℃下球磨振动粉碎得到粉体；将所得粉体预烧得到预烧料。与现有铁氧体预烧料制备时先加工成料球后预烧相比，本发明的制备方法通过将球磨料浆干燥后在一定保温条件下进一步振磨处理，实现初步的铁氧体化，然后预烧。所得预烧料振实密度高，铁氧体化反应充分，可提升制备的永磁铁氧体的剩磁和最大磁能积。
Preparation method and application of permanent magnetic ferrite pre-sintering material with high tap density
The invention relates to the technical field of permanent magnetic ferrite pre-sintering materials, and discloses a preparation method and application of a permanent magnetic ferrite pre-sintering material with high tap density. The preparation method of the pre-sintered material comprises the following steps: mixing the raw materials of the pre-sintered material comprising strontium carbonate and iron oxide red, adding water, carrying out ball milling to obtain ball-milled slurry, and drying to remove water; carrying out ball milling, vibration and crushing on the dried and dewatered material at the holding temperature of more than or equal to 80 DEG C to obtain powder; pre-sintering the obtained powder to obtain a pre-sintered material; compared with the prior art that the ferrite pre-sintering material is firstly processed into material balls and then pre-sintered, the preparation method provided by the invention has the advantages that the ball-milled slurry is further subjected to vibration milling treatment under a certain heat preservation condition after being dried, so that primary ferritization is realized, and then pre-sintering is performed. The obtained pre-sintered material is high in tap density and sufficient in ferritization reaction, and the residual magnetism and the maximum magnetic energy product of the prepared permanent magnetic ferrite can be improved.
本发明涉及永磁铁氧体预烧料技术领域，公开了一种高振实密度的永磁铁氧体预烧料的制备方法及应用。所述预烧料的制备方法包括将包括碳酸锶、铁红的预烧料的各原料混合，加水球磨得球磨料浆，然后干燥去水；将干燥去水后的物料在保温温度≥80℃下球磨振动粉碎得到粉体；将所得粉体预烧得到预烧料。与现有铁氧体预烧料制备时先加工成料球后预烧相比，本发明的制备方法通过将球磨料浆干燥后在一定保温条件下进一步振磨处理，实现初步的铁氧体化，然后预烧。所得预烧料振实密度高，铁氧体化反应充分，可提升制备的永磁铁氧体的剩磁和最大磁能积。
Preparation method and application of permanent magnetic ferrite pre-sintering material with high tap density
一种高振实密度的永磁铁氧体预烧料的制备方法及应用
YE HUA (author) / DING BOMING (author) / HU LIANGQUAN (author)
2024-05-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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