A low-temperature sintering process for manganese-zinc ferrite

A low-temperature sintering technology of manganese-zinc ferrite, which is applied in the field of manganese-zinc ferrite, can solve the problem of high energy consumption in the sintering process of manganese-zinc ferrite, and achieve the effect of reducing production costs and energy consumption

Active Publication Date: 2019-01-25
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem of high energy consumption in the prior art manganese-zinc ferrite sintering process, and provides a process with simple steps and strong operability, which can greatly reduce production energy consumption under the premise of ensuring product performance. Low temperature sintering process of manganese zinc ferrite to reduce production cost

Method used

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  • A low-temperature sintering process for manganese-zinc ferrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) One-time sanding: add water to the main material and carry out sand grinding until the particle size of the material is 1 μm, then dry it and wait for use. The main material is composed of the following molar percentage components: 52mol% Fe 2 o 3 , 9mol% ZnO, the balance is MnO;

[0021] (2) Pre-sintering: pre-sintering the dried main material in a nitrogen atmosphere at 600°C for 1 hour to obtain a pre-sintered material;

[0022] (3) Secondary sanding: add dopant to the calcined material and mix evenly, add water for sand milling until the particle size of the material is 0.7 μm, then dry to obtain sand abrasive, in which the dopant is CaCO 3 , Nb 2 o 5 , ZrO 2 and SnO 2 , based on the mass of pre-fired material, add 500ppm CaCO 3 , 200ppm Nb 2 o 5 , 100ppmZrO 2 and 400ppm SnO 2 ;

[0023] (4) Granulation: add 8% of the mass of the abrasive to the sand abrasive, and a PVA solution with a mass percentage concentration of 8%, stir evenly, and then spray a...

Embodiment 2

[0026] (1) One-time sanding: add water to the main material and sand it until the particle size of the material is 1.5 μm, then dry it and wait for use. The main material is composed of the following components in molar percentages: 53mol% Fe 2 o 3 , 10mol% ZnO, the balance is MnO;

[0027] (2) Pre-sintering: pre-sintering the dried main material in a nitrogen atmosphere at 950°C for 3 hours to obtain a pre-sintered material;

[0028] (3) Secondary sanding: add dopant to the calcined material and mix evenly, add water for sand milling until the particle size of the material is 1 μm, then dry to obtain sand abrasive, in which the dopant is CaCO 3 , Nb 2 o 5 , ZrO 2 and SnO 2 , based on the mass of pre-fired material, add 600ppm CaCO 3 , 300ppm Nb 2 o 5 , 200ppmZrO 2 and 500ppmSnO 2 ;

[0029] (4) Granulation: add 10% of the mass of the abrasive to the sand abrasive, and a PVA solution with a mass percentage concentration of 9%, stir evenly, and then spray and granula...

Embodiment 3

[0032] (1) One-time sanding: Add water to the main material and sand it until the particle size of the material is 1.2 μm, then dry it and wait for use. The main material is composed of the following components in molar percentages: 52.5mol% Fe2 o 3 , 9.5mol% ZnO, the balance is MnO;

[0033] (2) Pre-sintering: pre-sintering the dried main material in a nitrogen atmosphere at 850°C for 1.5 hours to obtain a pre-sintered material;

[0034] (3) Secondary sanding: add dopant to the calcined material and mix evenly, add water for sand milling until the particle size of the material is 0.8 μm, then dry to obtain sand abrasive, in which the dopant is CaCO 3 , Nb 2 o 5 , ZrO 2 and SnO 2 , based on the mass of pre-fired material, add 550ppm CaCO 3 , 250ppm Nb 2 o 5 , 150ppmZrO 2 and 450ppm SnO 2 ;

[0035] (4) Granulation: add 9% of the mass of the abrasive to the sand abrasive, and a PVA solution with a mass percentage concentration of 8.5%, stir evenly, and then spray and ...

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Abstract

The invention discloses a process for low-temperature sintering of manganese zinc ferrite. The process comprises a step (1) of primary sanding, a step (2) of presintering, a step (3) of secondary sanding, a step (4) of granulation and a step (5) of sintering. The process for low-temperature sintering of manganese zinc ferrite is improved and optimized, the process steps are simple, the maneuverability is high, the temperature of the manganese zinc ferrite can be reduced by 100-200 DEG C, the production energy consumption is greatly reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of manganese-zinc ferrite, in particular to a low-temperature sintering process of manganese-zinc ferrite. Background technique [0002] The production process of soft magnetic manganese zinc ferrite is a production process with high energy consumption, especially the final sintering process of ferrite materials. Since the sintering temperature of manganese-zinc ferrite generally needs to reach 1300-1400°C, the energy consumption is very large, and it seems inappropriate in today's society where energy conservation and environmental protection are generally required. However, if the sintering temperature is directly lowered, the sintered density of the manganese-zinc ferrite material will decrease sharply, which directly leads to a decrease in the saturation magnetic induction intensity Bs of the ferrite material. , will cause the peak power to fail to meet the requirements, and burn the device. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/64
Inventor 赵旭卢飞翔顾小建
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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