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Low-temperature sintered MnZn ferrite material and preparation and sintering method thereof

A ferrite material, low-temperature sintering technology, applied in the fields of electrochemistry and metal surface treatment, can solve the problems of huge power consumption and nitrogen, and achieve the effect of reducing energy consumption, excellent performance and low sintering temperature

Inactive Publication Date: 2018-01-09
成都圻坊生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since MnZn ferrite needs to be sintered at high temperature, usually the sintering temperature is 1330-1400°C, the holding time is 4-8 hours, the sintering cycle is as long as 26-36 hours, and it is also sintered under nitrogen protection. This requires a lot of electricity and nitrogen

Method used

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  • Low-temperature sintered MnZn ferrite material and preparation and sintering method thereof
  • Low-temperature sintered MnZn ferrite material and preparation and sintering method thereof
  • Low-temperature sintered MnZn ferrite material and preparation and sintering method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh each component in the ferrite material according to the following formula.

[0033] Fe 2 o 3 54mol%

[0034] ZnO 10.8mol%

[0035] MnO 35.2mol%;

[0036] The addition amount of each component in the auxiliary additive in the ferrite material is:

[0037]

[0038] Will weigh the Fe 2 o 3 , ZnO, and MnO are put into a ball mill pre-added with deionized water to grind the steel balls, and the average particle size is controlled to 0.5±0.1μm. After one spray granulation, the electric heating rotary kiln is used for pre-calcination at a temperature of 850±20°C to obtain Pre-calcined particles with a particle size of 0.9-1.2 mm, and then put the pre-calcined particles into the ball mill for secondary ball milling. During the ball milling process, add auxiliary additives such as calcium oxide, sodium peroxide, potassium peroxide, molybdenum trioxide, di Silicon oxide, zinc metaborate; add pure water, control the average particle size of the ball mill to 1.0±0....

Embodiment 2

[0040] Weigh each component in the ferrite material according to the following formula.

[0041] Fe 2 o 3 54mol%

[0042] ZnO 10.8mol%

[0043] MnO 35.2mol%;

[0044] The addition amount of each component in the auxiliary additive in the ferrite material is:

[0045]

[0046]

[0047] Will weigh the Fe 2 o 3 , ZnO, and MnO are put into a ball mill pre-added with deionized water to grind the steel balls, and the average particle size is controlled to 0.5±0.1μm. After one spray granulation, the electric heating rotary kiln is used for pre-calcination at a temperature of 850±20°C to obtain Pre-calcined particles with a particle size of 0.9-1.2 mm, and then put the pre-calcined particles into the ball mill for secondary ball milling. During the ball milling process, add auxiliary additives such as calcium oxide, sodium peroxide, potassium peroxide, molybdenum trioxide, di silicon oxide, zinc metaborate, lanthanum oxide, cerium oxide, and thorium oxide; and add pure w...

Embodiment 3

[0050] Weigh each component in the ferrite material according to the following formula.

[0051] Fe 2 o 3 54mol%

[0052] ZnO 10.8mol%

[0053] MnO 35.2mol%;

[0054] The addition amount of each component in the auxiliary additive in the ferrite material is:

[0055]

[0056] Will weigh the Fe 2 o 3 , ZnO, and MnO are put into a ball mill pre-added with deionized water to grind the steel balls, and the average particle size is controlled to 0.5±0.1μm. After one spray granulation, the electric heating rotary kiln is used for pre-calcination at a temperature of 850±20°C to obtain Pre-calcined particles with a particle size of 0.9-1.2 mm, and then put the pre-calcined particles into the ball mill for secondary ball milling. During the ball milling process, add auxiliary additives such as calcium oxide, sodium peroxide, potassium peroxide, molybdenum trioxide, di silicon oxide, zinc metaborate, lanthanum oxide, cerium oxide, and thorium oxide; and add pure water to cont...

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Abstract

The invention provides a low-temperature sintered MnZn ferrite material and a preparation and sintering method thereof. The ferrite material is prepared from the following main components according torespective standard substances: 49.5 to 56.5 mol percent of Fe2O3, 6.5 to 16 mol percent of ZnO, and 29.5 to 41 mol percent of MnO; auxiliary additives comprise calcium oxide, sodium peroxide, potassium peroxide, molybdenum sesquioxide, silicon dioxide and zinc metaborate; the total amount of the auxiliary additives is 0.1 to 0.5 weight percent of the total amount of the main components; the ferrite material is subjected to ball grinding, granulation, secondary ball grinding and spraying to obtain ferrite material powder; after being pressed for molding, the ferrite material powder is sintered at 1,180 + / - 30 DEG C for 3 to 5.5 hours, thereby obtaining a sintered magnetic core. The sintering temperature of the low-temperature sintered MnZn ferrite material provided by the invention is substantially reduced, so that the low-temperature sintered MnZn ferrite material can be sintered at about 1,180 DEG C; the sintering heat preservation time length is shortened to 3 to 5 hours; low-power-consumption and low-power ferrite with high performance is obtained, which is low in sintering temperature, short in heat preservation time and low in magnetic core production energy consumption.

Description

technical field [0001] The invention relates to the technical field of electrochemistry and metal surface treatment, in particular to a low-temperature sintered MnZn ferrite material and a preparation and sintering method thereof. Background technique [0002] With the rapid development of the world's electronic market, ferrite materials have special electromagnetic properties, such as: high electromagnetic rate, excellent high-frequency characteristics, etc., various electronic components made from ferrite cores, including high-frequency Magnetic core electronic devices, such as deflection coils, flyback transformers, ordinary transformers, rotary transformers, anti-electromagnetic interference transformers, inductors and choke coils, etc. These components are usually used as the core of the work and control of the system or equipment, and are widely used In: computers, mobile phones, communications, office automation, remote monitoring, audio-visual equipment, household ap...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/626C04B35/64
Inventor 张欢
Owner 成都圻坊生物科技有限公司
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