Preparation process of ferrite magnetic material
A technology of magnetic material and preparation process, applied in the direction of inductance/transformer/magnet manufacturing, electrical components, circuits, etc., can solve the problems of affecting the production quality of ferrite magnetic materials, reducing production efficiency, insufficient material consistency, etc., to improve production Mass, high friction, strength-reducing effect
Active Publication Date: 2022-04-01
YIXING YUXING IND & TRADE
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Problems solved by technology
[0013] In the ball milling operation of the above production step b, there is a situation where too much water is added. Once too much water is added, it is difficult to recover, and too much water will easily make the consistency of the material insufficient, resulting in too long drying time in the later stage, reducing the production efficiency, which is even more serious The most important thing is to affect the production quality of ferrite magnetic materials
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Embodiment 1
[0053] see figure 1 , the preparation process of ferrite magnetic material, comprises the following production steps:
[0054] S1, pre-crushing, pre-calcining ferric oxide, cerium oxide, promethium oxide, aluminum oxide and cobalt oxide in air according to the proportion, the pre-burning temperature is 700-900 °C, and pre-crushing after the raw materials are cooled naturally;
[0055] S2, ball milling, adding water-retaining balls 2 to the pre-crushed raw materials, please refer to figure 2 , using a ball mill to carry out wet milling, the ball milling time is 6-8 hours, and wet milling powder is obtained;
[0056] S3, pre-burning again, dry the wet mill powder at 120-130°C for 4-6 hours, then put it into a muffle furnace for pre-burning, the pre-burning temperature is 1000-1200°C, keep it warm for 4-6h and then Furnace is cooled to room temperature, obtains mixed powder;
[0057] S4, secondary grinding, grinding the mixed powder obtained by pre-firing again into 5-10 μm m...
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Abstract
The invention discloses a preparation process of ferrite magnetic material, which belongs to the technical field of preparation process of ferrite magnetic material. In the process of ball milling, ferrocene is prefabricated into a spherical shell by utilizing the property that ferrocene is insoluble in water. The water required by the ball mill is filled in the spherical shell, so that the added water is "solidified", and the quantitative addition of water and ferrocene can be realized at the same time, and even if the amount of water added is too much, it is convenient to operate in a short time The personnel take back the excess water to ensure the consistency of the material; during the ball milling process, the spherical shell is continuously broken by the steel ball, so that the required amount of water is gradually incorporated into the material, and the water is automatically and slowly added, with less water in the initial stage, and the material is between the materials. The friction between the material and the steel balls is large, the ball milling effect is better, and the amount of water increases in the later stage, which can carry the powdered material and deposit at the bottom of the block material, making the block material easier to be ground into powder, improving the ferrite Manufacturing quality of magnetic materials.
Description
technical field [0001] The present invention relates to the technical field of preparation technology of ferrite magnetic material, more specifically, relates to the preparation technology of ferrite magnetic material. Background technique [0002] Ferrite is a ferromagnetic metal oxide, which is sintered from iron oxide and other ingredients. In terms of electrical properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrite are also shown to have higher magnetic permeability at high frequencies. Therefore, ferrite has become a widely used non-metallic magnetic material in the field of high frequency and weak current, and it has become an important functional material indispensable to the development of modern industry and social economy. [0003] With the advancement of science and technology and the continuous improvement of people's requirements fo...
Claims
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IPC IPC(8): C04B35/26C04B35/622C04B35/626H01F41/02
CPCC04B35/2675C04B35/622C04B35/62605H01F41/02C04B2235/3217C04B2235/3229C04B2235/3224C04B2235/3275C04B2235/6567
Inventor 单淼陆云飞
Owner YIXING YUXING IND & TRADE