Method for efficiently manufacturing ferrite rubber and plastic magnetic powder

A technology of rubber-plastic magnetic powder and ferrite, which is applied in magnetic core manufacturing, chemical instruments and methods, inductor/transformer/magnet manufacturing, etc. Cycle time, performance improvement, process optimization effect

Active Publication Date: 2020-07-03
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 mass ratio of ball: water is 1:3:1, and 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%;

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

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 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 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 integrated...

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Abstract

The invention relates to the technical field of ferrite rubber and plastic magnetic powder preparation. Aiming at the problems of complex process, long production period and high cost of the existingferrite rubber and plastic magnetic powder manufacturing method, the invention discloses an efficient method for manufacturing ferrite rubber and plastic magnetic powder, wherein the method comprisesthe following steps of: directly putting a pre-sintered ball material with a particle size of less than or equal to 10 mm into a ball mill, carrying out wet fine grinding, spraying into a drying and annealing integrated kiln, and carrying out annealing calcining; and dispersing through a 60-100-mesh sieve mesh to obtain the ferrite rubber and plastic magnetic powder. According to the invention, adrying and annealing integrated kiln and slurry spraying combined drying and annealing mode is adopted, so that drying and annealing integration is achieved on the basis that the performance of ferrite rubber and plastic magnetic powder is kept, the procedures of dry grinding, deep filter pressing dehydration and screening after drying are omitted, the production period is shortened, and the costis reduced; and the slurry is sprayed and dried, and the wet fine grinding process is optimized, so that more than 65% of the granularity of the fine grinding material is intensively distributed nearthe average granularity, and the performance of the annealed rubber and plastic magnetic powder 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 Applications(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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