CN105565391A - Preparation process of wide-temperature low-power-consumption manganese zinc ferrite powder - Google Patents
Preparation process of wide-temperature low-power-consumption manganese zinc ferrite powder Download PDFInfo
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- CN105565391A CN105565391A CN201510977069.4A CN201510977069A CN105565391A CN 105565391 A CN105565391 A CN 105565391A CN 201510977069 A CN201510977069 A CN 201510977069A CN 105565391 A CN105565391 A CN 105565391A
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- zinc ferrite
- temperature low
- ferrite powder
- power consumption
- wide temperature
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0072—Mixed oxides or hydroxides containing manganese
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
Abstract
The invention discloses a preparation process of wide-temperature low-power-consumption manganese zinc ferrite powder. The preparation process includes, preparing and mixing materials, sheet rolling, pre-sintering, coarse vibrating, fine grinding, adding PVA and performing component correction, and spray drying. The wide-temperature low-power-consumption manganese zinc ferrite powder prepared by the preparation process is high in saturation flux density, low in power consumption and high in Curie temperature and resistivity in a range of 25-100 DEG C.
Description
Technical field
The disclosure relates to soft magnetic materials field, particularly relates to a kind of preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder.
Background technology
Ferrite has ferromagnetic metal oxide as one, has a wide range of applications at the numerous areas such as electronics, communication.Along with developing rapidly of electronics and information industry, in industry, the requirement of ferrite properties is also progressively improved.Soft magnetic ferrite must work sometimes under high magnetic flux, high frequency state, also require that magnetic property is stable as far as possible in comparatively large-temperature range simultaneously, therefore Ferrite Material is needed to have higher Curie temperature, and in wide temperature range, improve saturation magnetic flux density as far as possible simultaneously and reduce power loss.
At present, can not ensure saturation magnetic flux density under the wide temperature of soft magnetic ferrite, MnZn ferrite material can not ensure the stability of Curie temperature and the magnetic property in wide temperature range, and both are of limited application.
Summary of the invention
In view of above-mentioned defect of the prior art or deficiency, expect the preparation technology that a kind of wide temperature low-power consumption manganese-zinc ferrite powder is provided, according to the produced wide temperature low-power consumption manganese-zinc ferrite powder of preparation technology of the present invention, there is higher saturation magnetic flux density, lower power loss, higher Curie temperature and resistivity.
The preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder of the present invention, comprises the steps:
(1) batching mixing:
Get following component by weight: ferric oxide 68.91-70.31 part, trimanganese tetroxide 21.89-24.86 part, zinc oxide 6.21-9.2 part, add taper blender and mix, vibrating mill sent into by the raw material mixed, and makes mixed powder;
(2) sheet is rolled:
Mixed powder sends into tablets press feed bin, and rolling pressure is 9-11MPa, and mixed powder is rolled into sheet stock;
(3) pre-burning:
By feeder, sheet stock is delivered to pre-burning in rotary kiln, rotary kiln is warming up to 800-850 DEG C, then steady temperature sintering;
(4) slightly shake:
Under water-cooled condition, send pellet burned in advance to vibrating mill, make coarse abrasive by feeder, the feeding speed of feeder is 10-12kg/min;
(5) fine grinding:
Pure water put into by sand milling bucket, and add in sand mill by the coarse abrasive after slightly shaking and pulverizing, add dispersion agent, the sand milling time is 60-90min, and coarse abrasive changes slip state into, and the diameter of particle controlling slip is 0.9-1.1 μm;
(6) add PVA and carry out composition correction:
To in slip, add PVA liquid and defoamer, stir;
Carry out composition timing, get following component by weight:
The total amount of the parts by weight of Niobium Pentxoxide 0.0-0.08 part, calcium oxide 0.12-0.07 part, salt of wormwood and Quilonum Retard is less than 2 parts,
Correction is put into sand mill and to be circulated sand milling;
(7) spraying dry:
Use the dry slip of gun spraying.
According to the produced wide temperature low-power consumption manganese-zinc ferrite powder of preparation technology of the present invention, within the scope of 25-100 DEG C, there is higher saturation magnetic flux density, lower power loss, higher Curie temperature and resistivity.
Embodiment
Embodiment is described in further detail the application below.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Describe embodiment in detail the application below.
Embodiment one:
A preparation technology for wide temperature low-power consumption manganese-zinc ferrite powder, comprises the steps:
(1) batching mixing:
Get following component by weight: ferric oxide 68.91-70.31 part, trimanganese tetroxide 21.89-24.86 part, zinc oxide 6.21-9.2 part, add taper blender and mix, vibrating mill sent into by the raw material mixed, and makes mixed powder;
(2) sheet is rolled:
Mixed powder sends into tablets press feed bin, and rolling pressure is 9-11MPa, and mixed powder is rolled into sheet stock;
(3) pre-burning:
By feeder, sheet stock is delivered to pre-burning in rotary kiln, rotary kiln is warming up to 800-850 DEG C, then steady temperature sintering;
(4) slightly shake:
Under water-cooled condition, send pellet burned in advance to vibrating mill, make coarse abrasive by feeder, the feeding speed of feeder is 10-12kg/min;
(5) fine grinding:
Pure water put into by sand milling bucket, and add in sand mill by the coarse abrasive after slightly shaking and pulverizing, add dispersion agent, the sand milling time is 60-90min, and coarse abrasive changes slip state into, and the diameter of particle controlling slip is 0.9-1.1 μm;
(6) add PVA and carry out composition correction:
To in slip, add PVA liquid and defoamer, stir;
Carry out composition timing, get following component by weight:
The total amount of the parts by weight of Niobium Pentxoxide 0.0-0.08 part, calcium oxide 0.12-0.07 part, salt of wormwood and Quilonum Retard is less than 2 parts,
Correction is put into sand mill and to be circulated sand milling;
(7) spraying dry:
Use the dry slip of gun spraying.
Further, mixed powder is after rolling sheet, and the length of sheet stock is less than 8 ㎜, and width is less than 5 ㎜.
Further, the size controlling of the powder after slightly shaking is at 1-2.5 μm.
Further, the grain diameter after spraying dry is 60-200 order, and peak value is at 100 orders.
Further, the parts by weight of the particle moisture content after spraying dry are 0.2-0.35 part.
Further, in burn in step, kiln temperature rise rate is 100 DEG C/h, and rotary kiln boiler tube rotating speed is 3r/min.
Further, slightly shake in step, the vibrational frequency of vibrating mill is 7Hz.
Further, in fine milling step, the weight adding pure water is 220kg, and adding dispersion agent volume is 500ml, and the coarse abrasive weight adding sand mill is 450kg.
Further, add PVA and carry out in composition aligning step, 10% adds PVA liquid and defoamer by weight percentage, stirs 2 hours, and putting into circulate time of sand milling of sand mill is 1 hour.
Further, in spray drying step, lance outlet temperature-stable is at 103 DEG C.
Embodiment two, embodiment three, embodiment four, embodiment five, embodiment six:
A kind of wide temperature low-power consumption manganese-zinc ferrite powder, the concrete corresponding table 1 of formula composition by weight:
Table 1: wide temperature low-power consumption manganese-zinc ferrite powder formula composition by weight
The technological process of production is substantially identical with embodiment one, concrete technology condition one_to_one corresponding table 2:
Table 2: the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder
Wide temperature low-power consumption manganese-zinc ferrite powder in embodiment one to embodiment six, main raw material(s) quality by weight and the corresponding table 3 of standard:
Table 3: main raw material(s) quality by weight and standard
In embodiment two to embodiment six, wide temperature low-power consumption Mn-Zn ferrite performance is in table 4:
Table 4: wide temperature low-power consumption Mn-Zn ferrite performance
The sample of embodiment six, its initial permeability μ
ibe 3200 ± 25%, saturation magnetic flux density Bs H=1194A/m, 25 DEG C time be 520mT, saturation magnetic flux density Bs H=1194A/m, 100 DEG C time be 410mT, Curie temperature is not less than 220 DEG C, power loss PL 100kHz, 200mT, 25 DEG C time be 400kW/m
3, power loss PL 100kHz, 200mT, 100 DEG C time be 340kW/m
3, resistivity is greater than 7.0 Ω m.Show the magnetic property of good stable at the wide temperature ranges of 25 DEG C to 100 DEG C, and have the feature of high saturation magnetic flux density and low-power consumption concurrently.
More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should be encompassed in when not departing from described inventive concept, other technical scheme of being carried out arbitrary combination by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme formed.
Claims (10)
1. a preparation technology for wide temperature low-power consumption manganese-zinc ferrite powder, is characterized in that, comprises the steps:
(1) batching mixing:
Get following component by weight: ferric oxide 68.91-70.31 part, trimanganese tetroxide 21.89-24.86 part, zinc oxide 6.21-9.2 part, add taper blender and mix, vibrating mill sent into by the raw material mixed, and makes mixed powder;
(2) sheet is rolled:
Mixed powder sends into tablets press feed bin, and rolling pressure is 9-11MPa, and mixed powder is rolled into sheet stock;
(3) pre-burning:
By feeder, sheet stock is delivered to pre-burning in rotary kiln, rotary kiln is warming up to 800-850 DEG C, then steady temperature sintering;
(4) slightly shake:
Under water-cooled condition, send pellet burned in advance to vibrating mill, make coarse abrasive by feeder, the feeding speed of feeder is 10-12kg/min;
(5) fine grinding:
Pure water put into by sand milling bucket, and add in sand mill by the coarse abrasive after slightly shaking and pulverizing, add dispersion agent, the sand milling time is 60-90min, and coarse abrasive changes slip state into, and the diameter of particle controlling slip is 0.9-1.1 μm;
(6) add PVA and carry out composition correction:
To in slip, add PVA liquid and defoamer, stir;
Carry out composition timing, get following component by weight:
The total amount of the parts by weight of Niobium Pentxoxide 0.0-0.08 part, calcium oxide 0.12-0.07 part, salt of wormwood and Quilonum Retard is less than 2 parts,
Correction is put into sand mill and to be circulated sand milling;
(7) spraying dry:
Use the dry slip of gun spraying.
2. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, described mixed powder is after rolling sheet, and the length of described sheet stock is less than 8 ㎜, and width is less than 5 ㎜.
3. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, described slightly shake after the size controlling of powder at 1-2.5 μm.
4. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, the grain diameter after described spraying dry is 60-200 order, and peak value is at 100 orders.
5. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, the parts by weight of the particle moisture content after described spraying dry are 0.2-0.35 part.
6. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, in described burn in step, kiln temperature rise rate is 100 DEG C/h, and rotary kiln boiler tube rotating speed is 3r/min.
7. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, describedly slightly shakes in step, and the vibrational frequency of vibrating mill is 7Hz.
8. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, in described fine milling step, the weight adding pure water is 220kg, and adding dispersion agent volume is 500ml, and the coarse abrasive weight adding sand mill is 450kg.
9. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, it is characterized in that, the described PVA of adding also carries out in composition aligning step, 10% adds PVA liquid and defoamer by weight percentage, stir 2 hours, putting into circulate time of sand milling of sand mill is 1 hour.
10. the preparation technology of wide temperature low-power consumption manganese-zinc ferrite powder according to claim 1, is characterized in that, in described spray drying step, lance outlet temperature-stable is at 103 DEG C.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167402A (en) * | 2016-05-13 | 2016-11-30 | 泰州茂翔电子器材有限公司 | A kind of high-performance manganese-zinc ferrite powder preparation method |
| CN108275991A (en) * | 2018-01-18 | 2018-07-13 | 常熟市三佳磁业有限公司 | Power transformer low-consumption Mn-Zn ferrite material and preparation method thereof |
| CN108865062A (en) * | 2018-08-02 | 2018-11-23 | 西华大学 | A kind of radio-radar absorber and preparation method thereof |
| CN109437877A (en) * | 2018-10-23 | 2019-03-08 | 无锡斯贝尔磁性材料有限公司 | A kind of production technology of high solids content manganese-zinc ferrite slurry |
| CN110661052A (en) * | 2018-07-01 | 2020-01-07 | 临沂春光磁业有限公司 | Production method for preparing wide-temperature low-power-consumption manganese-zinc ferrite powder |
| CN110818402A (en) * | 2019-08-19 | 2020-02-21 | 横店集团东磁股份有限公司 | Preparation method of superfine ferrite powder |
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| CN101241792A (en) * | 2007-02-06 | 2008-08-13 | 昆山尼赛拉电子器材有限公司 | Mn-Zn soft magnetic ferrite and its production technology |
| CN101241791A (en) * | 2007-02-06 | 2008-08-13 | 昆山尼赛拉电子器材有限公司 | Wide-temperature and low-consumption Mn-Zn soft magnetic ferrite and its production method |
| CN102690107A (en) * | 2012-02-15 | 2012-09-26 | 横店集团东磁股份有限公司 | High-temperature low-loss MnZn power ferrite and preparation method thereof |
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| CN103951411A (en) * | 2014-04-15 | 2014-07-30 | 南通冠优达磁业有限公司 | Wide-temperature-range low-power-consumption high-Curie-temperature manganese/zinc ferrite material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167402A (en) * | 2016-05-13 | 2016-11-30 | 泰州茂翔电子器材有限公司 | A kind of high-performance manganese-zinc ferrite powder preparation method |
| CN108275991A (en) * | 2018-01-18 | 2018-07-13 | 常熟市三佳磁业有限公司 | Power transformer low-consumption Mn-Zn ferrite material and preparation method thereof |
| CN110661052A (en) * | 2018-07-01 | 2020-01-07 | 临沂春光磁业有限公司 | Production method for preparing wide-temperature low-power-consumption manganese-zinc ferrite powder |
| CN108865062A (en) * | 2018-08-02 | 2018-11-23 | 西华大学 | A kind of radio-radar absorber and preparation method thereof |
| CN108865062B (en) * | 2018-08-02 | 2021-02-19 | 西华大学 | Electromagnetic wave absorbent and preparation method thereof |
| CN109437877A (en) * | 2018-10-23 | 2019-03-08 | 无锡斯贝尔磁性材料有限公司 | A kind of production technology of high solids content manganese-zinc ferrite slurry |
| CN110818402A (en) * | 2019-08-19 | 2020-02-21 | 横店集团东磁股份有限公司 | Preparation method of superfine ferrite powder |
| CN110818402B (en) * | 2019-08-19 | 2020-10-23 | 横店集团东磁股份有限公司 | Preparation method of superfine ferrite powder |
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Application publication date: 20160511 |