CN1724461A - Process for mfg. ferrite rubber-plastic magnetic powder - Google Patents
Process for mfg. ferrite rubber-plastic magnetic powder Download PDFInfo
- Publication number
- CN1724461A CN1724461A CN 200410028200 CN200410028200A CN1724461A CN 1724461 A CN1724461 A CN 1724461A CN 200410028200 CN200410028200 CN 200410028200 CN 200410028200 A CN200410028200 A CN 200410028200A CN 1724461 A CN1724461 A CN 1724461A
- Authority
- CN
- China
- Prior art keywords
- ferrite
- manufacture method
- magnetic powder
- rubber magnetic
- ferrite rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 28
- 239000006247 magnetic powder Substances 0.000 title claims description 13
- 239000004033 plastic Substances 0.000 title abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005496 tempering Methods 0.000 claims abstract description 8
- 238000010298 pulverizing process Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 5
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 claims description 7
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 101100004286 Caenorhabditis elegans best-5 gene Proteins 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000007873 sieving Methods 0.000 abstract 1
- 235000019580 granularity Nutrition 0.000 description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 235000012054 meals Nutrition 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910001631 strontium chloride Inorganic materials 0.000 description 1
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Abstract
A process for preparing the magnetic ferrite powder used for rubber or plastic includes such steps as providing SrBa ferrite (SrO1-xBaOx) *nFe2O3 or Sr ferrite SrO*nFe2O3, proportionally mixing raw materials, grinding, adding assistant, pulverizing, granulating, sintering, pulverizing, tempering, water washing, baking, pulverizing and sieving.
Description
Technical field
The present invention relates to a kind of manufacture method of magneticsubstance, especially a kind of manufacture method of ferrite rubber magnetic powder.
Background technology
Ferrite rubber magneticsubstance performance depends primarily on the performance of its magnetic, is being used for being processed into the magnetic device process, and magnetic is the performance requriements height not only, and the processing complexity is also very important.And this workability has much relations with the granularity of magnet powder thickness, and often granularity of magnet powder is thick, and workability is good.At present, homemade and Japanese magnetic mean particle size is 1.0～1.1 microns; The technology of prior art, behind the material by wet type mixing, the sintering temperature height, after the wet method fine grinding, particle diameter is 0.85～0.95 micron, tempering processing temperature height is processed into 1.0～1.1 microns of finished product magnetic particle diameters at last, is difficult to increase the magnetic mean particle size.
Summary of the invention
The objective of the invention is: a kind of manufacture method of ferrite rubber magnetic powder is provided, and it not only makes the magnetic particle diameter big, and additivity is good, the magnetic property height, and also technology is simple, and processing temperature is low, has saved the energy.
The object of the present invention is achieved like this: a kind of ferrite rubber magneticsubstance may further comprise the steps with the manufacture method of magnetic:
(1) molecular formula is (SrO
1-xBaO
x) nFe
2O
3Strontium barium complex ferrite or molecular formula are SrOnFe
2O
3Strontium ferrites, main raw material is: Fe
2O
3Purity 98.5～99% contains SiO
20.04～0.20%; SrCO
3(purity 96～98.5%); Additive: 0.1～0.7wt%CaCO
3(technical pure), Bi
2O
3Be 0～0.2wt%, mol ratio n=5.6～6.2 wherein; X=0.1～0.2.
Main raw material Fe
2O
3Also can replace with the super fine ore of scale oxide or oxidation, purity 98.5～99% contains SiO
20.04～0.20%;
(2) dry method batch mixing;
(3) rolling, interpolation auxiliary agent SrCl
26H
2O or BaCl
26H
2O, with 4～8wt% of batch mixing amount, best 5～7wt%, when adding auxiliary agent that auxiliary agent is water-soluble; Also can use anhydrous SrCl
2Or BaCl
2
(4) pulverizing, granulation, sintering, 1030 ℃～1100 ℃ of sintering temperatures, (SrO
1-xBaO
x) nFe
2O
31060 ℃～1080 ℃ insulations of the optimum temps of strontium barium complex ferrite 1～2 hour; SrOnFe
2O
31040 ℃～1060 ℃ of strontium ferrites optimal sintering temperatures are incubated 1～2 hour;
(5) 1.35～1.50 microns of coarse reductions (A.P.D);
(6) dry method fine powder broken (A.P.D) is 1.0～1.18 microns;
(7) tempering temperature is 800～900 ℃, best 820～850 ℃, is incubated 0.5～1.5 hour;
(8) washing waits and handles (3～6 times);
(9) dry, pulverize, sieve, 1.30～1.40 microns of finished products (A.P.D).
Washing is to remove muriate and non-magnetic substance such as the SrCO in the magnetic
3, Sr (OH)
2Deng.Also can adopt dilute hydrochloric acid solution to handle with washing carries out simultaneously, detailed process is as follows: material is put into agitation vat, add hydrochloric acid soln and stirring, material: hydrochloric acid soln (weight ratio)=1: 1.1～1.3, concentration of hydrochloric acid 2～16%, churning time 5～30 minutes, the water that adds equal dilute hydrochloric acid solution weight then, stirred 1～10 minute, stopped to stir 5～10 minutes, remove the liquid above the precipitation slip; Add water again, stirred 1～10 minute, stopped to stir 5～10 minutes, remove the liquid above the precipitation slip, 2～3 times repeatedly.
The manufacture method of ferrite rubber magnetic powder of the present invention, sintering temperature is low 50～70 ℃ than traditional technology; Adopt the dry method fine grinding, granularity is 0.15～0.23 micron bigger than normal before the tempering, and does not wash and remove fusing assistant muriate in the slip.Tempering process is except that eliminating lattice bending, lattice imperfection and internal stress to improve the magnetic property, and the part fusing assistant still plays facilitates the crystal effect of growing up, so the finished product granularity can reach 1.30～1.40 microns, bigger 0.20～0.30 micron than traditional technology granularity.Granularity of magnet powder is thick, the performance height, and it is desired to make rubber-plastic magnetic plate technology just.
Embodiment
Embodiment 1:
Raw material Fe
2O
3(purity 98.5% contains SiO
20.12%) SrCO,
3(purity 97%), molecular formula are (SrO
0.887BaO
0.113) 6.0Fe
2O
3, 0.5wt%CaCO
3, adopt the high speed disintegrator batch mixing 2 times, (1.0 millimeters of screen cloth diameters) back adds 6.0wt%SrCl
26H
2O, strontium chloride is dissolved in boiling water during interpolation, SrCl
26H
2O: hot water=57.6 gram: 50 milliliters, after high speed pulverization mixes, carry out sintering after making 8～12 millimeters spherules of diameter, 1092 ℃ of sintering temperatures are incubated 1 hour 30 minutes.Reach 1.44 microns (A.P.D) with the ball material coarse crushing of high speed disintegrator after with sintering, after the vibrating mill fine powder is broken to 1.16 microns (A.P.D), tempering temperature will expect to disperse through high speed disintegrator in 846 ℃ of insulations 1 hour.To expect again to drop in the agitation vat and carry out acid treatment and water treatment; Material is 1: 1.26 with the hydrochloric acid soln part by weight, and acid solutions is 5%, stirs after 15 minutes, adds the water that is same as acid solution weight, washes and continues to stir 2 minutes, stops to stir, and the magnetic precipitation was removed solution after 10 minutes; Wash for the second time amount of water 1 times, stirred 2 minutes, precipitate 10 minutes, remove solution for acid solution weight for the first time; Wash so for the third time.With slip oven dry, cross cyclone sieve (120 order) and remove coarse particles, the magnetic finished product.Make binding agent with CPE, open refining through mill, use the rolling press finishing, Magnetic Measurement is carried out in sample preparation.The result is specially: Br=2681Gs, Hc=2478Oe, Hcj=3091Oe, (BH) max=1.75MGOe, 1.39 microns of granularity of magnet powder (A.P.D).
Embodiment 2:
1079 ℃ of sintering temperatures, 1.4 microns of dry method meal granularities (A.P.D), 1.05 microns of fine powder particle degree (A.P.D), other processing condition are with embodiment 1, magnetism testing result: Br=2705Gs, Hc=2566Oe, Hcj=3513Oe, (BH) max=1.79MGOe, 1.32 microns of granularity of magnet powder (A.P.D).
Embodiment 3:
1072 ℃ of sintering temperatures, 1.42 microns of dry method meal granularities (A.P.D), 1.03 microns of fine powder particle degree (A.P.D), other processing condition are with embodiment 1, magnetism testing result: Br=2707Gs, Hc=2549Oe, Hcj=3355Oe, (BH) max=1.80MGOe, 1.32 microns of granularity of magnet powder (A.P.D).
Embodiment 4:
Molecular formula SrO6.0Fe
2O
31057 ℃ of sintering temperatures, 1.41 microns of dry method meal granularities (A.P.D), 1.01 microns of fine powder particle degree (A.P.D), other processing condition be with embodiment 1, magnetism testing result: Br=2692Gs, Hc=2502Oe, Hcj=3162Oe, (BH) max=1.77MGOe, 1.30 microns of granularity of magnet powder (A.P.D).
Embodiment 5:
Molecular formula SrO6.0Fe
2O
3, add Bi during batch mixing
2O
3Be 0.07wt%, 1054 ℃ of calcined temperatures, 1.38 microns of dry method coarse reduction granularities (A.P.D), 1.08 microns of fine powder particle degree (A.P.D), other technology is with embodiment 4.Magnetism testing result: Br=2709Gs, Hc=2505Oe, Hcj=3385Oe, (BH) max=1.80MGOe; 1.40 microns of granularity of magnet powder (A.P.D).
Claims (8)
1, a kind of manufacture method of ferrite rubber magnetic powder step in the following order:
(1) molecular formula is (SrO
1-xBaO
x) nFe
2O
3Strontium barium complex ferrite or molecular formula be SrOnFe
2O
3Strontium ferrites, main raw material is: Fe
2O
3, scale oxide or the super fine ore of oxidation, Fe
2O
3Purity 98.5～99% contains SiO
20.04～0.20%; SrCO
3(purity 96～98.5%); Additive: CaCO
3(technical pure) 0.1～0.7wt%, Bi
2O
3Be 0～0.2wt%, mol ratio n=5.6～6.2 wherein; X=0.1～0.2.
(2) dry method batch mixing;
(3) rolling, interpolation fusing assistant SrCl
26H
2O or BaCl
26H
2O, add-on is 4～8wt% of batch mixing amount, best 5～7wt% is fused to water with auxiliary agent when adding auxiliary agent; Also can use anhydrous SrCl
2Or BaCl
2
(4) pulverizing, granulation, sintering, 1030 ℃～1100 ℃ of sintering temperatures;
(5) 1.35～1.50 microns of coarse reductions (A.P.D);
(6) dry method fine powder broken (A.P.D) is 1.0～1.18 microns;
(7) tempering temperature is 800～900 ℃, is incubated 0.5～1.5 hour;
(8) washing waits and handles (3～6 times);
(9) dry, pulverize, sieve, 1.30～1.40 microns of finished products (A.P.D).
2, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: it is (SrO that main raw material mainly adopts molecular formula
1-xBaO
x) nFe
2O
3Strontium barium complex ferrite.
3, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: (SrO
1-xBaO
x) nFe
2O
31060 ℃～1080 ℃ of the optimal sintering temperatures of strontium barium complex ferrite are incubated 1～2 hour.
4, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: SrOnFe
2O
31040 ℃～1060 ℃ of strontium ferrites optimal sintering temperatures are incubated 1～2 hour.
5, according to the manufacture method of claim 1,2,3 or 4 described a kind of ferrite rubber magnetic powders, it is characterized in that: best 820～850 ℃ of tempering temperature.
6, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: optimum mole ratio n=5.9～6.1, x=0.1～0.2.
7, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: fusing assistant SrCl
26H
2O adds with 5～7wt% of batch mixing amount.
8, the manufacture method of a kind of ferrite rubber magnetic powder according to claim 1 is characterized in that: CaCO
3(technical pure) best 0.4～0.6wt%; Bi
2O
3Be 0～0.1wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100282004A CN1318349C (en) | 2004-07-23 | 2004-07-23 | Process for mfg. ferrite rubber-plastic magnetic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100282004A CN1318349C (en) | 2004-07-23 | 2004-07-23 | Process for mfg. ferrite rubber-plastic magnetic powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1724461A true CN1724461A (en) | 2006-01-25 |
| CN1318349C CN1318349C (en) | 2007-05-30 |
Family
ID=35924110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100282004A Expired - Lifetime CN1318349C (en) | 2004-07-23 | 2004-07-23 | Process for mfg. ferrite rubber-plastic magnetic powder |
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| Country | Link |
|---|---|
| CN (1) | CN1318349C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830693A (en) * | 2010-04-17 | 2010-09-15 | 广东省梅州市磁性材料厂 | Method for manufacturing strontium ferrite rubber plastic magnetic powder with low chlorine content |
| CN101894648A (en) * | 2010-07-02 | 2010-11-24 | 北矿磁材科技股份有限公司 | Bonded ferrite magnetic powder, preparation method thereof and bonded permanent magnet |
| CN102229492A (en) * | 2011-06-09 | 2011-11-02 | 南通万宝实业有限公司 | Method for preparing anisotropic bonded ferrite by compression process |
| CN102424583A (en) * | 2011-09-05 | 2012-04-25 | 吕佳佳 | Magnetic powder for bonding hard ferrite |
| CN101372416B (en) * | 2008-09-22 | 2012-07-18 | 山西国磁磁业有限公司 | Preparation of ferrite rubber magnetic powder |
| CN103304264A (en) * | 2013-06-13 | 2013-09-18 | 浙江凯文磁钢有限公司 | Method for improving intrinsic coercivity of permanent magnetic ferrite |
| CN104609845A (en) * | 2014-12-15 | 2015-05-13 | 横店集团东磁股份有限公司 | Preparation method of injection molding bonded magnetic powder |
| CN105960385A (en) * | 2014-01-31 | 2016-09-21 | 沙特基础工业公司 | Hard magnetic compositions from iron oxide fines and methods for making same |
| CN111825121A (en) * | 2020-06-08 | 2020-10-27 | 横店集团东磁股份有限公司 | Ferrite rubber-plastic magnetic powder and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050641A (en) * | 1989-09-26 | 1991-04-10 | 鞍山市磁性材料厂 | The host element secondary adds the method that improves the iron strontium oxide magnetic energy |
| CN1088351A (en) * | 1992-12-14 | 1994-06-22 | 刘宏 | Strontiam and barium compounded permanent-magnet ferrite and preparation method thereof |
| JP3256377B2 (en) * | 1993-08-12 | 2002-02-12 | 日立金属株式会社 | Manufacturing method of ferrite magnet |
| CN1442388A (en) * | 2002-03-06 | 2003-09-17 | 华能诸暨磁性材料厂 | Method of manufacturing high performance ferrite strontium primary sintered material powder using iron scale |
-
2004
- 2004-07-23 CN CNB2004100282004A patent/CN1318349C/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372416B (en) * | 2008-09-22 | 2012-07-18 | 山西国磁磁业有限公司 | Preparation of ferrite rubber magnetic powder |
| CN101830693A (en) * | 2010-04-17 | 2010-09-15 | 广东省梅州市磁性材料厂 | Method for manufacturing strontium ferrite rubber plastic magnetic powder with low chlorine content |
| CN101894648A (en) * | 2010-07-02 | 2010-11-24 | 北矿磁材科技股份有限公司 | Bonded ferrite magnetic powder, preparation method thereof and bonded permanent magnet |
| CN101894648B (en) * | 2010-07-02 | 2012-10-31 | 北矿磁材科技股份有限公司 | Bonded ferrite magnetic powder, preparation method thereof and bonded permanent magnet |
| CN102229492A (en) * | 2011-06-09 | 2011-11-02 | 南通万宝实业有限公司 | Method for preparing anisotropic bonded ferrite by compression process |
| CN102229492B (en) * | 2011-06-09 | 2013-01-30 | 南通万宝实业有限公司 | Method for preparing anisotropic bonded ferrite by compression process |
| CN102424583A (en) * | 2011-09-05 | 2012-04-25 | 吕佳佳 | Magnetic powder for bonding hard ferrite |
| CN103304264A (en) * | 2013-06-13 | 2013-09-18 | 浙江凯文磁钢有限公司 | Method for improving intrinsic coercivity of permanent magnetic ferrite |
| CN105960385A (en) * | 2014-01-31 | 2016-09-21 | 沙特基础工业公司 | Hard magnetic compositions from iron oxide fines and methods for making same |
| US10614939B2 (en) | 2014-01-31 | 2020-04-07 | Saudi Basic Industries Corporation | Hard magnetic compositions from iron oxide fines and methods for making same |
| CN104609845A (en) * | 2014-12-15 | 2015-05-13 | 横店集团东磁股份有限公司 | Preparation method of injection molding bonded magnetic powder |
| CN111825121A (en) * | 2020-06-08 | 2020-10-27 | 横店集团东磁股份有限公司 | Ferrite rubber-plastic magnetic powder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1318349C (en) | 2007-05-30 |
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Assignee: FOSHAN CITY BALING ELECTRIC MOTOR Co.,Ltd. Assignor: BALING MAGNETOELECTRIC Co.,Ltd. SHUNDE DISTRICT FOSHAN CITY Contract fulfillment period: 2008.7.31 to 2024.7.23 Contract record no.: 2008440000217 Denomination of invention: Method for manufacturing strontium ferrite rubber plastic magnetic powder with low chlorine content Granted publication date: 20070530 License type: Exclusive license Record date: 20080815 |
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Effective date of registration: 20200811 Address after: No. 359, Jinou Road, Jianghai District, Jiangmen City, Guangdong Province:282 Nanshan Road, Jianghai District, Jiangmen City; 126 Gaoxin West Road, Jianghai District, Jiangmen City) No. 359, Jinou Road, Jianghai District, Jiangmen City, Guangdong Province (place of business: No. 282, Nanshan Road, Jianghai District, Jiangmen City; No. 126, Gaoxin West Road, Jianghai District, Jiangmen City) Patentee after: Jiangmen Jiangyi magnetic material Co.,Ltd. Address before: 529000 No. 8, Longwan Road, Jiangmen, Guangdong Patentee before: Guangdong led Limited by Share Ltd. |
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Granted publication date: 20070530 |
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| CX01 | Expiry of patent term |