Mn-Zn soft magnetic ferrite for saving energy and lighting, and preparation method of obtained magnetic core

A manganese-zinc soft magnet and soft ferrite technology, which is applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of no μi temperature curve, large difference in μi, and failure to meet the high-quality requirements of energy-saving lighting.

Inactive Publication Date: 2010-10-20
GUANGDONG FENGHUA ADVANCED TECH HLDG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither of these two types of materials has a stable μi temperature curve, and the μi varies greatly at different temperatures, which cannot meet the high-quality requirements of μi temperature stability in the field of energy-saving lighting

Method used

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  • Mn-Zn soft magnetic ferrite for saving energy and lighting, and preparation method of obtained magnetic core
  • Mn-Zn soft magnetic ferrite for saving energy and lighting, and preparation method of obtained magnetic core
  • Mn-Zn soft magnetic ferrite for saving energy and lighting, and preparation method of obtained magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Press Fe 2 o 3 : MnO: ZnO = 52.2: 37.5: 10.3 for a batching, where Fe 2 o 3 German ThyssenKrupp iron red, purity ≥ 99.3wt%, MnO converted to Mn 3 o 4 , using high-purity Mn from Hunan Jinrui 3 o 4 , purity ≥ 98.8wt%, ZnO adopts ZnO from Haimen, Zhejiang, indirect method, purity ≥ 99.7wt%. Pour the three raw materials into a mixing tank, add a dispersant and deionized water, fully stir and mix, and perform a ball mill for 2 to 6 hours. Spray drying and pre-calcination are carried out. The pre-calcination temperature is 800-960° C. and the pre-calcination time is 30-90 minutes to obtain a calcined material. Pre-fired materials are used for secondary batching, put into a ball mill for secondary ball milling, and A and B auxiliary materials are added. The A group auxiliary materials are CaCO with a weight percentage of 50-500ppm 3 , SiO 2 One or two of them, the composition of the auxiliary materials in group B is Bi with a weight percentage of 100-2000ppm 2 o 3 ...

Embodiment 2

[0015] Press Fe 2 o 3 : MnO: ZnO = 53.2: 38: 10.3mol formula for a batching, where Fe 2 o 3 German ThyssenKrupp iron red, purity ≥ 99.3wt%, MnO converted to Mn 3 o 4 , using high-purity Mn from Hunan Jinrui 3 o 4 , purity ≥ 98.8wt%, ZnO adopts the ZnO indirect method in Haimen, Zhejiang, with a purity ≥ 99.7wt%. Pour the three raw materials into a mixing tank, add a dispersant and deionized water, fully stir and mix, and perform a ball mill for 2 to 6 hours. Spray drying and pre-calcination are carried out. The pre-calcination temperature is 800-960° C. and the pre-calcination time is 30-90 minutes to obtain a calcined material. Pre-fired materials are used for secondary batching, put into a ball mill for secondary ball milling, and A and B auxiliary materials are added. The A group auxiliary materials are CaCO with a weight percentage of 50-500ppm 3 , SiO 2 One or two of them, the composition of the auxiliary materials in group B is Bi with a weight percentage of 100...

Embodiment 3

[0017] Press Fe 2 o 3 : MnO: ZnO = 54.2: 37.5: 10.3mol% of the formula for a batching, where Fe 2 o 3 German ThyssenKrupp iron red, purity ≥ 99.3wt%, MnO converted to Mn 3 o 4 , using high-purity Mn from Hunan Jinrui 3 o 4 , purity ≥ 98.8wt%, ZnO adopts ZnO from Haimen, Zhejiang, indirect method, purity ≥ 99.7wt%. Pour the three raw materials into a mixing tank, add a dispersant and deionized water, fully stir and mix, and perform a ball mill for 2 to 6 hours. Spray drying and calcining are carried out, the calcining temperature is 800-960° C., the calcining time is 30-90 minutes, and the calcined material is obtained. The calcined material is used for secondary batching, put into a ball mill for secondary ball milling, and auxiliary materials A, B, and C are added. The auxiliary material of group A is CaCO with a weight percentage of 50-500ppm 3 , SiO 2 One or two of them, the composition of the auxiliary materials in group B is Bi with a weight percentage of 100-200...

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Abstract

The invention relates to a Mn-Zn soft magnetic ferrite for saving energy and lighting, and preparation method of an obtained magnetic core. The soft magnetic ferrite comprises the following main components by molar part: 50.5-55.5 mol% of iron oxide Fe2O3, 34.5-38.3mol% of manganese oxide Mn3O4 and the balance of zinc oxide basically, and also comprises two groups of auxiliary materials A and B, wherein the auxiliary material group A comprises one or two of CaCO3 and SiO2 with the weight percentage of 50-500ppm, and the auxiliary material group B comprises one or more of Bi2O3, Nb2O5, V2O5 and Al2O3 with the weight percentage of 100-2000ppm. The magnetic core obtained from the material has high squareness ratio under the high and low temperature conditions, and simultaneously, the permeability temperature curve has negative temperature coefficient from minus 10 DEG C to 120 DEG C, and the driving characteristics are good under the situations of high and low temperature.

Description

technical field [0001] The invention relates to a ferrite material and a preparation method of the obtained magnetic core, in particular to a manganese-zinc soft magnetic ferrite material applied to energy-saving lighting with wide temperature stability and a preparation method of the obtained magnetic core. Background technique [0002] MnZn soft magnetic ferrite material for energy-saving lamps is a kind of power ferrite material. It is a new type of soft magnetic material with high performance and high added value that has emerged in the past two years. It is mainly used in integrated energy-saving lamps and electronic ballasts. Pulse drive transformers have high technical content, are difficult to manufacture, and require high electromagnetic performance. Generally, in the market, many customers use some general-purpose soft magnetic materials to make drive transformers, such as PC40 and PC44 materials. The electromagnetic performance in specific application practice is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622H01F41/02B22F3/16
Inventor 王京平姚木有胡春元蒋胜勇王宏胡永清周锋赖永学王治群林庆培陶超
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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