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A kind of efficient method for manufacturing ferrite rubber plastic magnetic powder

A technology of rubber and plastic magnetic powder and ferrite, which is applied in magnetic core manufacturing, chemical instruments and methods, inductance/transformer/magnet manufacturing, etc., can solve the problems of shortening the production process, long production cycle, and complicated process, and achieve shortened production The effect of cycle, performance improvement and process optimization

Active Publication Date: 2021-06-18
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of complex procedures, long production cycle and high cost in the existing ferrite rubber-plastic magnetic powder manufacturing method, the purpose of the present invention is to provide an efficient method for manufacturing ferrite rubber-plastic magnetic powder, so as to shorten the manufacturing process and reduce the cost Effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An efficient method for manufacturing ferrite rubber and plastic magnetic powder, comprising the following steps:

[0027] (1) Pelletizing: Mix iron-phosphorus with a particle size of 6 μm and barium carbonate to obtain a mixture, wherein the molar ratio of iron element to barium element is 11:1, then add water to mix, pelletize, and obtain pellets;

[0028] (2) Pre-burning: 1200 ℃ high-temperature calcined pellets are made into pre-fired pellets, and the particle size of pre-fired pellets is ≤10mm;

[0029] (3) Fine grinding: directly wet-grind the pre-fired ball material in the ball mill to obtain fine abrasive, the wet fine grinding process is the material: the ball: water mass ratio is 1:3:1, the diameter of the ball is 15-35mm, Among them, the weight of grinding balls below 25mm accounts for 55%, and the weight of balls larger than 25mm accounts for 45%. 50%;

[0030] (4) Baking: Spray the fine abrasive into the integrated drying and annealing kiln for annealing ...

Embodiment 2

[0033] An efficient method for manufacturing ferrite rubber and plastic magnetic powder, comprising the following steps:

[0034] (1) Pelletizing: mix iron red with a particle size of 5 μm and barium carbonate to obtain a mixture, wherein the molar ratio of iron element to barium element is 11.8:1, then add water to mix, pelletize, and obtain pellets;

[0035] (2) Pre-burning: calcining balls at 1150°C to make pre-fired balls, the particle size of the pre-fired balls is ≤10mm;

[0036] (3) Fine grinding: directly wet-grind the pre-fired ball material in the ball mill to obtain fine abrasive, the wet fine grinding process is the material: the ball: water mass ratio is 1:3:1, the diameter of the ball is 15-35mm, Among them, the weight of grinding balls below 25mm accounted for 55%, and the weight of balls larger than 25mm accounted for 45%. 50%;

[0037] (4) Baking: Spray the fine abrasives into the integrated drying and annealing kiln for annealing and calcination, the temper...

Embodiment 3

[0040] An efficient method for manufacturing ferrite rubber and plastic magnetic powder, comprising the following steps:

[0041] (1) Pelletizing: mix iron red and iron phosphorus with a particle size of 7 μm and barium carbonate to obtain a mixture, wherein iron red accounts for 30wt% of iron and phosphorus, and the molar ratio of iron element to barium element is 10.4:1, then add water to mix, Make pellets and obtain pellets;

[0042] (2) Pre-burning: calcining balls at 1150°C to make pre-fired balls, the particle size of the pre-fired balls is ≤10mm;

[0043] (3) Fine grinding: directly wet-grind the pre-fired ball material in the ball mill to obtain fine abrasive, the wet fine grinding process is the material: the ball: water mass ratio is 1:3:1, the diameter of the ball is 15-35mm, Among them, the weight of grinding balls below 25mm accounted for 55%, and the weight of balls larger than 25mm accounted for 45%. 50%;

[0044] (4) Baking: Spray the fine abrasive into the in...

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Abstract

The invention relates to the technical field of preparation of ferrite rubber and plastic magnetic powder, and discloses an efficient method for manufacturing ferrite rubber and plastic magnetic powder in view of the problems of complex procedures, long production cycle and high cost in the existing ferrite rubber and plastic magnetic powder manufacturing method The method is to put the pre-fired ball material with a particle size of ≤10mm directly into the ball mill for wet fine grinding, and then spray it into the drying and annealing kiln for annealing and calcination; and then disperse it through a 60-100 mesh screen to obtain ferrite rubber-plastic magnetic powder . On the one hand, the present invention adopts the drying and annealing method combining the drying and annealing integrated kiln and the slurry injection, and realizes the integration of drying and annealing on the basis of maintaining the performance of the ferrite rubber and plastic magnetic powder, saving dry grinding and deep pressing. The screening process after dehydration and drying shortens the production cycle and reduces the cost; on the other hand, combined with slurry spraying and drying, the wet fine grinding process is optimized, so that the particle size of more than 65% of the fine abrasives is more concentrated. Near the average particle size, the performance of the rubber-plastic magnetic powder after annealing is improved.

Description

technical field [0001] The invention relates to the technical field of ferrite rubber-plastic magnetic powder preparation, in particular to an efficient method for preparing ferrite rubber-plastic magnetic powder. Background technique [0002] As the consumer market for refrigerators and other home appliances continues to increase, the demand for ferrite rubber and plastic magnetic powder used to manufacture refrigerator seals, door and window magnetic seals and other products is also growing rapidly. At present, the traditional process of producing ferrite rubber and plastic magnetic powder is to use iron phosphorus (or iron red) and barium carbonate (or strontium carbonate) as raw materials, through mixing, pre-calcination, coarse crushing, fine grinding, drying, and disintegration. , annealing, dispersion and other processes to prepare ferrite rubber and plastic magnetic powder, the process flow is complicated, the production cycle is long, and the cost is high. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02C01G49/00
CPCC01G49/0036C01P2004/60C01P2006/42H01F41/0206H01F41/0246
Inventor 叶华胡良权丁伯明
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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