CN101058504A - Preparation technique for soft-magnetic manganese-zinc ferrite powder - Google Patents
Preparation technique for soft-magnetic manganese-zinc ferrite powder Download PDFInfo
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- CN101058504A CN101058504A CN 200610020741 CN200610020741A CN101058504A CN 101058504 A CN101058504 A CN 101058504A CN 200610020741 CN200610020741 CN 200610020741 CN 200610020741 A CN200610020741 A CN 200610020741A CN 101058504 A CN101058504 A CN 101058504A
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Abstract
The invention discloses a manufacturing technique of magnetic ferrite material, in particular to a manufacturing technique of flexible magnetic manganese-zinc ferrite powder, which comprises the following steps: wetting to grind; spraying; graining; pre-sintering; vibrating and balling the pre-sintered material; proceeding secondary wet-grinding and secondary spraying graining. The invention is beneficial to finish solid phase completely during pre-sintering, which reduces power consumption and power dust pollution with high original magnetic conductivity.
Description
(1) technical field
The present invention is the production technique of the production technique of ferrite magnetic material, particularly soft-magnetic manganese-zinc ferrite powder.
(2) background technology
Ferrite magnetic material is the basic function material of hyundai electronics, communication equipment and components and parts.The powder production technique of ferrite magnetic material generally is: once do and mix → make ball → pre-burning → sand milling → mist projection granulating.Doing mixed is that main raw material(s) ferric oxide, zinc oxide, trimanganese tetroxide (or manganous carbonate) are mixed in mixer by a certain percentage.It is spherical to the back formation of compound water spray making ball, is convenient to pre-burning.The shortcoming that above-mentioned existing powder production technique exists is:
A, to make behind the ball in the raw material water content higher, particle is bigger and inhomogeneous, solid state reaction is insufficient in the pre-burning process, so its ferrite magnetic material initial permeability of making is lower and power loss is higher, can not adapt to the requirement of modern electronic product to miniaturization, lightweight and the high reliability of magneticsubstance.
B, because starting material are by do mixing, corresponding its working space powder is seriously polluted, is difficult to reach environmental requirement.
C, by the product of this explained hereafter, performance can only reach the level that is equivalent to the Japanese TDK PC40 of company material.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned prior art deficiency, providing a kind of can solid phase reflect fully in the pre-burning process, the ferrite magnetic material initial permeability of making is higher, power loss is less, its performance reaches and is equivalent to the Japanese TDK PC44 of company material horizontal, and the production technique of the magnetic powder of working space no dust pollution.
Solution of the present invention is:
A, starting material are carried out carrying out mist projection granulating one time after the wet-milling;
Carry out pre-burning, vibratory milling again behind b, a mist projection granulating;
Carry out the secondary wet-milling after c, the vibratory milling, the secondary mist projection granulating.
A wet-milling is that raw material is inserted in the sand mill of deionized water in the solution of the present invention, and by the rotation of stirring rod, the steel ball of sand mill lower end mixes, grinds raw material.Vibratory milling is that pre-imitation frosted glass is inserted in the vibromill in the solution of the present invention, and the steel ball in the vibromill carries out vibration to pre-imitation frosted glass in vibration processes, and the material powder after levigate leaks down to collect by screen cloth.
The secondary wet-milling is the circulation sand milling in the solution of the present invention.
Advantage of the present invention:
A, since raw material before pre-burning, adopt wet-milling, so improved Working environment, reduced dust pollution.
Through a wet-milling, slurry mixes more abundant, even before b, the raw material pre-burning, and pre-burning is after vibratory milling, pre-imitation frosted glass mean particle size reaches about 1.5 μ m, can reduce the secondary sand milling time, improves effect, cut down the consumption of energy, compare with existing powder, the present invention cuts down the consumption of energy about 10%.
C, raw material through its slurry after the wet-milling behind mist projection granulating, water content is lower, particle is little and even, more help fully finishing of solid state reaction in the pre-burning process, thereby make that the ferrite initial permeability of producing is higher, power loss is littler, can adapt to miniaturization, lightweight and the high reliability request of modern electronic product to magneticsubstance.
(4) embodiment
The embodiment of the invention is as follows: the production technique of soft-magnetic manganese-zinc ferrite powder, and its production technique is carried out according to the following steps:
A, will be inserted in the sand mill of deionized water by starting material ferric oxide, zinc oxide, trimanganese tetroxide (or manganous carbonate), by the rotation of stirring rod, the steel ball of sand mill lower end mixes, grinds raw material.Slurry after will grinding then carries out mist projection granulating, and its mean particle size is controlled at about 2.5 μ m;
B, the mist projection granulating material is carried out pre-burning, then pre-imitation frosted glass is inserted vibromill, the steel ball in the machine carries out vibration to pre-imitation frosted glass in vibration processes, and fineness reaches the following pre-imitation frosted glass of 1.5 μ m and will leak down by screen cloth;
Fines after c, the vibratory milling carries out the secondary circulation wet-milling again, carries out the secondary mist projection granulating then.
The every after testing index contrast of PC44 soft magnetic MnZn ferrite material that the Ferrite Material of being produced through present embodiment technology and existing and world-renowned TDK company produce is as following table:
| Prior art | The present invention | The PC44 of TDK company | ||
| Initial permeability μ i | 2300±25％ | 2400±25％ | 2400±25％ | |
| Curie temperature ℃ | ≥210 | ≥215 | ≥215 | |
| Coercivity H/A.m-1 | 14.3 | 12.0 | 13.0 | |
| Core loss mw/cm 3 | 25℃ | 600 | 600 | 600 |
| 60℃ | 450 | 400 | 400 | |
| 100℃ | 410 | 300 | 300 | |
| 120℃ | 500 | 370 | 420 | |
Claims (4)
1, a kind of production technique of soft-magnetic manganese-zinc ferrite powder is characterized in that carrying out according to the following steps:
A, raw material is carried out mist projection granulating after the wet-milling;
Carry out pre-burning, vibratory milling again behind b, a mist projection granulating;
Carry out the secondary wet-milling after c, the vibratory milling, the secondary mist projection granulating.
2, the production technique of soft-magnetic manganese-zinc ferrite powder according to claim 1, it is characterized in that a described wet-milling is that raw material is inserted in the sand mill of deionized water, by the rotation of stirring rod, the steel ball of sand mill lower end mixes, grinds raw material.
3, the production technique of soft-magnetic manganese-zinc ferrite powder according to claim 1, it is characterized in that described vibratory milling is that pre-imitation frosted glass is inserted in the vibromill, steel ball wherein carries out levigate in vibration processes to pre-imitation frosted glass, the powder after levigate leaks down to collect by screen cloth.
4, the production technique of soft-magnetic manganese-zinc ferrite powder according to claim 1 is characterized in that the secondary wet-milling is the circulation sand milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100207411A CN100418921C (en) | 2006-04-18 | 2006-04-18 | Preparation technique for soft-magnetic manganese-zinc ferrite powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100207411A CN100418921C (en) | 2006-04-18 | 2006-04-18 | Preparation technique for soft-magnetic manganese-zinc ferrite powder |
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| Publication Number | Publication Date |
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| CN101058504A true CN101058504A (en) | 2007-10-24 |
| CN100418921C CN100418921C (en) | 2008-09-17 |
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| CNB2006100207411A Active CN100418921C (en) | 2006-04-18 | 2006-04-18 | Preparation technique for soft-magnetic manganese-zinc ferrite powder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388268B (en) * | 2008-07-11 | 2011-02-09 | 临沂中瑞电子有限公司 | High magnetic conductive low temperature sintered NiCuZn ferrite material |
| CN102161585A (en) * | 2011-01-20 | 2011-08-24 | 绵阳开磁科技有限公司 | High-frequency wide-temperature low-power-consumption soft magnetic Mn-Zn ferrite and preparation method thereof |
| CN101376590B (en) * | 2008-10-13 | 2012-06-27 | 北京科技大学 | Method for preparing manganese-zinc ferrite powder by self-propagating high temperature synthesis |
| CN102531559A (en) * | 2010-12-22 | 2012-07-04 | 上海宝钢磁业有限公司 | Preparation method for high-performance manganese zinc ferrite powder |
| WO2015106568A1 (en) * | 2014-01-14 | 2015-07-23 | 四川省德阳博益磁性材料有限公司 | Preparation process for mnzn soft ferrite having ultra-low value loss and high uq |
| CN106083069A (en) * | 2016-06-06 | 2016-11-09 | 怀远县金浩电子科技有限公司 | A kind of preparation method of electric elements electronic ceramic powder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1023935C (en) * | 1990-03-29 | 1994-03-09 | 天津大学 | Prodn process of hard-magnetic ferrite material by using open hearth dust as raw material |
| JP3636292B2 (en) * | 2000-06-22 | 2005-04-06 | Ｔｄｋ株式会社 | Method for producing ferrite sintered body |
-
2006
- 2006-04-18 CN CNB2006100207411A patent/CN100418921C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388268B (en) * | 2008-07-11 | 2011-02-09 | 临沂中瑞电子有限公司 | High magnetic conductive low temperature sintered NiCuZn ferrite material |
| CN101376590B (en) * | 2008-10-13 | 2012-06-27 | 北京科技大学 | Method for preparing manganese-zinc ferrite powder by self-propagating high temperature synthesis |
| CN102531559A (en) * | 2010-12-22 | 2012-07-04 | 上海宝钢磁业有限公司 | Preparation method for high-performance manganese zinc ferrite powder |
| CN102531559B (en) * | 2010-12-22 | 2015-09-30 | 上海宝钢磁业有限公司 | A kind of manufacture method of high-performance manganese-zinc ferrite material powder |
| CN102161585A (en) * | 2011-01-20 | 2011-08-24 | 绵阳开磁科技有限公司 | High-frequency wide-temperature low-power-consumption soft magnetic Mn-Zn ferrite and preparation method thereof |
| WO2015106568A1 (en) * | 2014-01-14 | 2015-07-23 | 四川省德阳博益磁性材料有限公司 | Preparation process for mnzn soft ferrite having ultra-low value loss and high uq |
| CN106083069A (en) * | 2016-06-06 | 2016-11-09 | 怀远县金浩电子科技有限公司 | A kind of preparation method of electric elements electronic ceramic powder |
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| Publication number | Publication date |
|---|---|
| CN100418921C (en) | 2008-09-17 |
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Assignee: Ganzhou City surmounts precision electronics corporation, Ltd. Assignor: Mianyang Kaiyuan Magnetic Material Co., Ltd. Contract record no.: 2012360000006 Denomination of invention: Preparation technique for soft-magnetic manganese-zinc ferrite powder Granted publication date: 20080917 License type: Exclusive License Open date: 20071024 Record date: 20120224 |