High-performance permanent ferrite and dyadic manufacturing method thereof

Abstract

The invention discloses a high-performance permanent magnetic ferrite and a binary production method thereof. The permanent magnetic ferrite is prepared from a material A, a material B and a ball milling additive with accessories. The contents of the ingredients by weight are as follows: 67-90 percent of material A, 9-30 percent of material B and 1-3 percent of ball milling additive; the material A is the once preburning material of strontium ferrite purchased from the market; the material B comprises the following ingredients by weight (the total being 100 percent): 79.0-83.0 percent of ferric oxide with the purity of Fe2O3 of not less than 98.5 percent and the purity of SiO2 of not more than 0.05 percent, 5.0-9.0 percent of lanthana with the purity of La2O3 of not less than 98 percent, 9.0-13.0 percent of strontium carbonate with the purity of SrCO3 of not less than 97.5 percent and 2.7-3.3 percent of cobaltosic oxide with the purity of Co3O4 of not less than 98 percent. The material B is obtained through batching, mixing, drying, dispersing, preburning, grinding and sieving. The invention has the advantages of high magnetic performance of products, relatively low cost, strong market competitiveness, easy forming of magnetic pieces and the like and can be widely applied to the production process of high-performance permanent magnetic ferrite.

Description

technical field [0001] The invention relates to a permanent magnet ferrite and a production method thereof, in particular to a high-performance permanent magnet ferrite and a binary production method thereof. It can be widely used in the production process of high-performance permanent magnet ferrite. Background technique [0002] Permanent magnet ferrite is still the most ideal preferred permanent magnet material in many application fields (such as automobile, motorcycle DC motor, starter motor, small air gap magnetic joint, separator, holding device, etc.), so in recent years, high-grade ferrite The development of permanent magnet is still very fast. [0003] At present, permanent magnet ferrite products account for 42% of applications in high-tech fields, such as home appliances (microwave ovens, air conditioners, small electric appliances), office supplies (copiers, fax machines), automobiles, motorcycles, high-fidelity audio, and instrumentation sensors. Applications ...

AI Technical Summary

Problems solved by technology

The problem of this production method is: when using this production method to produce high-performance permanent magnet ferrite, Co 2 o 3 The amount added is 1 to 3%, while Co 2 o 3 The price is about 600 yuan / Kg, the cost of the product is high, and the market competitiveness is poor; in the secondary ball mill, Fe 2 o 3 Difficulty in forming magnetic parts due to too fine particle size

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