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Preparation method of permanent ferrite

A permanent magnet ferrite and raw material technology, applied in the direction of inorganic material magnetism, etc., can solve the problems of performance gap, unable to meet the growing market, limited output, etc., to achieve the effect of reducing production costs

Inactive Publication Date: 2011-03-30
FOSHAN CITY JIANGFEN BALING MAGNETIC MATERIAL
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Problems solved by technology

[0004] According to the current market trend, the demand for high-performance permanent magnet ferrite is increasing with the improvement of the overall requirements of the society, especially the demand for high-performance magnetic tiles and high-performance multi-pole rotors. The overall technology is backward, not only the output is very limited, but also the performance is far from the standard requirements, which is far from meeting the growing demand of the market

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Embodiment Construction

[0030] The present invention will be specifically described below in conjunction with specific embodiments.

[0031] The preparation method of the permanent magnet ferrite of the present invention is actually an application number of the applicant earlier, the application number is: 200610035683.X; The improvement of the manufacturing method of the invention patent application, its specific method steps are as follows:

[0032] A kind of preparation method of permanent ferrite, it comprises following processing steps,

[0033] Step 1: Select raw materials, including Fe 2 o 3 , SrCO 3 , La 2 o 3 、Co 3 o 4 , CaCO 3 and water, when weighing, press (Sr 1-x La x )O·n{(Fe 1-y co y ) m o 3 Carry out metering, wherein x, m, n, y represent molar ratio, satisfy x=mny, range is as follows: x=0.1~0.4, m=1.93~2.00, n=6.2~6.4; Each raw material is: purity is 98% to 99% Fe 2 o 3 , SrCO with a purity of 96% to 98% 3 , with a Co content of 73% to 74% Co 3 o 4 , with a purit...

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Abstract

The invention relates to a preparation method of permanent ferrite, which comprises the following steps of: 1, selecting the raw materials which comprises Fe2O3, SrCO3, La2O3,Co3O4,CaCO3 and water; 2, carrying out wet-mixing; 3, drying; 4, pelletizing and presintering; 5, roughly crushing; 6, putting rough powder into a ball mill and adding CaCO3, SiO2, Al2O3 and calcium gluconate, and fine crushing; 7, filtering sediments; 8, pressing under a magnetic filed in a wet manner; 9, sintering; 10, grinding; 11, cleaning; and 12, testing the property. During the fine crushing of the step 6, H3BO3 is added. According to the preparation method of the permanent ferrite, through improving primary and secondary formulas, the property of the sintered permanent ferrite is increased, the environment problem is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of permanent magnet ferrite. Specifically, the performance of sintered ferrite is improved, the environmental protection problem is improved, and the production cost is reduced by improving the primary and secondary formulations. Background technique [0002] With the increasing development of science and technology, environmental protection and the limitation of energy shortage, various electronic and electrical application products have been upgraded one after another to meet the needs of the market and the environment with high performance, high efficiency and high energy saving. As one of the basic products of electronic devices - permanent magnet ferrite, its performance is bound to develop in the direction of high performance, in order to comply with the development of science and technology and meet the growing demand of the market. [0003] In the research and production of permanent magnet ferrite,...

Claims

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Application Information

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IPC IPC(8): H01F1/10H01F1/11C04B35/26C04B35/622
Inventor 陈国权陈浩雄雷海军罗晓玲
Owner FOSHAN CITY JIANGFEN BALING MAGNETIC MATERIAL
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