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A kind of preparation method of manganese zinc ferrite material powder

A technology of manganese zinc ferrite and material powder, which is applied in the direction of magnetic objects, magnetic materials, inorganic materials, etc., can solve the problems of poor product consistency, poor pre-burning uniformity, easy cracking of products, etc., and achieve good temperature characteristics and heat resistance. Uniform, good product consistency

Active Publication Date: 2020-08-04
SHANGHAI BAOSTEEL MAGNETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional preparation process uses an electric furnace for pre-firing. On the one hand, the energy consumption is high, and on the other hand, the uniformity of pre-firing is poor, resulting in poor product consistency, which will cause problems such as easy cracking when the product is formed.

Method used

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  • A kind of preparation method of manganese zinc ferrite material powder
  • A kind of preparation method of manganese zinc ferrite material powder
  • A kind of preparation method of manganese zinc ferrite material powder

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Embodiment 1

[0030] ⑴ Automatic batching and weighing: the raw material Fe 2 o 3 , Mn 3 o 4 , ZnO is weighed according to the following weight using an automatic batching machine, and the weight ratio of the raw material composition is as follows:

[0031] Fe 2 o 3 70wt%

[0032] mn 3 o 4 22wt%

[0033] ZnO 8wt%

[0034] Accessories

[0035]

[0036]

[0037] (2) Mixing and humidification: Mix and humidify the weighted powder with a double-shaft mixing and humidifying mixer. After mixing and humidifying, the moisture content is controlled at 5%. The mixing uniformity requires three points to be randomly selected, and the component deviation does not exceed 0.5%.

[0038] ⑶ Molding: The mixed and humidified powder is molded with automatic powder molding equipment. The shape of the mold is honeycomb round cake. 5 pieces, molding density 1.2g / cm3.

[0039] ⑷Microwave pre-firing: The honeycomb round cake is pre-fired using a new type of microwave pre-fired pusher kiln. The ...

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Abstract

The invention belongs to the technical field of soft magnetic ferrite and in particular relates to a preparation method of manganese-zinc ferrite powder. The preparation method takes Fe2O3, Mn3O4 and ZnO as main raw materials to prepare manganese-zinc soft magnetic ferrite powder through eight procedures of automatically proportioning, mixing and humidifying, molding, carrying out microwave pre-sintering, crushing, roughly crushing, finely crushing and spraying and granulating. The preparation method provided by the invention aims at realizing energy saving and consumption reduction, and automatic production through a novel technology; a device is completely sealed in a mixing and humidifying process and no dust is discharged, so that green, energy-saving, environment-friendly and automatic protection is really realized. The manganese-zinc soft magnetic ferrite powder prepared by the preparation method has relatively high initial magnetic conductivity and also has good temperature characteristic, frequency characteristic, low loss, high impedance and good overlying performance and the like; uniform heating is realized through the microwave pre-sintering so that the molding performance of the powder is better than that of a traditional manufacturing technology.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic ferrite, in particular to a preparation method of manganese zinc ferrite powder. Background technique [0002] Manganese zinc ferrite, also known as magnetic ceramics, is a soft magnetic ferrite material with a spinel structure. Compared with the same type of metal magnetic materials, it has the characteristics of high resistivity and small eddy current loss. Because of its high magnetic Physical properties such as conductivity, low coercive force and low power loss are widely used in the electronics industry, mainly used to manufacture high-frequency transformers, inductors, recording heads and noise filters. With the rapid development of the electronics industry, the requirements for magnetic materials are getting higher and higher. The preparation of high-quality magnetic materials suitable for different occasions has attracted more and more attention. [0003] The traditional preparati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622H01F1/34
CPCC04B35/2658C04B35/622C04B2235/3208C04B2235/3251H01F1/344
Inventor 冯炜徐辉宇李斌黄子谦彭春兰王薪皓
Owner SHANGHAI BAOSTEEL MAGNETICS