CN1050641A - The host element secondary adds the method that improves the iron strontium oxide magnetic energy - Google Patents
The host element secondary adds the method that improves the iron strontium oxide magnetic energy Download PDFInfo
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- CN1050641A CN1050641A CN 89105176 CN89105176A CN1050641A CN 1050641 A CN1050641 A CN 1050641A CN 89105176 CN89105176 CN 89105176 CN 89105176 A CN89105176 A CN 89105176A CN 1050641 A CN1050641 A CN 1050641A
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- oxide magnetic
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Abstract
A kind ofly add a certain amount of host element by secondary in process of production, improve iron strontium oxide magnetic can production method, it is low to have the cost of raw material, does not increase auxiliary equipment, technology is simple, does not need to add rare element, is suitable for advantage such as big industrial production.In addition, under the situation of formulation ratio fluctuation for the first time, still can add strontium carbonate SrCO because of secondary
3And guarantee every index of product, so also has the comparatively simple advantage of technology controlling and process.
Description
A kind ofly add a certain amount of host element by secondary in process of production, improve iron strontium oxide magnetic can production method.
Strontium ferrite is a kind of high coercive force permanent-magnetic material, is mainly used in production, the manufacturing of products such as the desired magnetic shoe of ultrathin loudspeaker and electrical micro-machine, magnet steel.
At present, the index that is used for the said goods strontium body in the world is:
Br：3600-4000Gs。
BHc：3000-3400Oe。
（BH）max：3.0-3.8MGOe。
What the domestic production strontium ferrite adopted is sintering process or title pyrogenic process.This method has advantages such as the course of processing is simple, cost is lower.But index can only reach:
Br：3600-3900Gs.
BHc：2400-2700Oe.
（BH）max：3.0-3.4MGOe.
Can not satisfy production, manufacturings such as magnetic shoe that ultrathin loudspeaker and electrical micro-machine use, magnet steel.Domestic also have by other a small amount of rare element of adding, raising iron strontium oxide magnetic energy.But production cost improves a lot, and performance index improve not obvious, still can not satisfy the instructions for use of product.
At present, adopt sintering process can produce the strontium ferrite that meets index request in the world.But concrete production method does not have the file record.
Also adopting iron oxide red in the world is the production that raw material carry out strontium ferrite, but prices of raw and semifnished materials costliness is unsuitable for the application of suitability for industrialized production and product.
Also have in the world and adopt intermediate processing to carry out that strontium ferrite produces.The shortcoming of this method is production method complexity (chemical method production), cost height, inapplicable suitability for industrialized production.
The method that the objective of the invention is to add by the host element secondary improves magnetic property, the reduction product cost of strontium ferrite, simplifies production technology.
This courage is by international online retrieval service department of Liaoning Inst. of Scientific and Technic Information hand inspection group and international online retrieval service department, use the exercise question of " secondary of host element adds the technology that improves the iron strontium oxide magnetic energy " and " adding of host element secondary improves the iron strontium oxide magnetic energy " respectively, be that the Chinese invention patent communique in 1985-1989 April of H01F '/34 and 1963-1980 and the present world patents index of 1981-are retrieved to classification number, do not detect the material of relevant prior art.
Prescription of the present invention is as follows:
Mole ratio: Fe
2O
3: S
2O=1: 5.5-5.7.
The addition of high Siberian cocklebur soil: 0.35%-0.5%.
The addition of calcium carbonate: 0.4%-0.6%.
The addition of strontium carbonate: 0.4%-1.2%.
Production process of the present invention is as follows:
One, raw-material preparation:
Raw material have iron scale E
3O
4, strontium carbonate S
CO
3, high Siberian cocklebur soil, calcium carbonate CaCo
3.
Above-mentioned raw-material index request is respectively: iron scale E
3O
4All iron content be 72-74%.Strontium carbonate SrCO
3〉=96%
High Siberian cocklebur soil and calcium carbonate CaCO
3Host element content all should distinguish 〉=97%.
Two, mixing and ball milling
By the basic recipe mole ratio is Fe
2O
3: S
2O=1: 5.5-5.7, high Siberian cocklebur soil dosage are 0.35%-0.5%, calcium carbonate CaCO
3Addition be that 0.4%-0.6% carries out mixing and ball milling.The mixing and ball milling discharging-material size is for-10 μ.
Three, oven dry: the raw material after the mixing and ball milling is dried, dry to water content 3-5%.
Four, sintering: junction temperature is 1290 ℃-1320 ℃, and temperature retention time is 100 minutes-180 minutes.
Five, secondary ball milling: when secondary ball milling begins, add the high Siberian cocklebur soil of 0.4-0.6%, the calcium carbonate CaCO of 0.35-0.55%
3, with the light water of raw material equal weight, 0.4-1.2% strontium carbonate SrCO
3The discharging-material size of secondary ball milling is 0.9-1.2 μ.
Six, sedimentation: the slurry behind the secondary ball milling carries out sedimentation in settling tank.Slurry water content after the sedimentation requires to be 25-30%.
Seven, compacting: to water content after the sedimentation is that the slurry of 25-30% is suppressed.Requiring pulsed magnetic field 6000-8000Oe, pressing pressure during compacting is 250～300KG/cm.
Eight, the oven dry: dry to water content be 1.5-2%.
Nine, sintering: sintering temperature 1230-1260 ℃, the insulation 100-150 minute.
Ten, finished product is processed, gone out to mill
The equipment that uses in the above technical process all is present general equipment, in one's power percentage, all refer to the percentage of comparing with the raw material total weight.
The product index that uses the present invention to produce can reach:
Br：3650-3950G
3
BHc：3000-3500Oe
（BH）max：3.1-3.7MGOe。Be much higher than domestic level, satisfy the requirement of common index in the world, some in addition be higher than general in the world index.
The present invention and process domestic, that produce this product in the world at present relatively have the cost of raw material low, do not increase auxiliary equipment, technology is simple, does not need to add rare element, is suitable for advantages such as big industrial production.
In addition, formulation ratio is strict for the first time for former technology, otherwise influences the index of product.The present invention still can add strontium carbonate SrCO because of secondary under the situation of former technology formulation ratio fluctuation for the first time
3And guarantee every index of product, so except that above-mentioned advantage, also has the comparatively simple advantage of technology controlling and process.
Embodiment:
One, raw material are prepared: iron scale E
3O
4All iron content be 72-74%.Strontium carbonate SrCO
3〉=96%, kaolin and calcium carbonate CaCO
3Main component content all should be respectively 〉=and 97%.
Two, basic recipe: Fe
2O
3: S
2O=1: 5.6, the content of high Siberian cocklebur soil adding is 0.45%, and calcium carbonate adds
Content is 0.4%, and discharging-material size is 5 μ.
Three, oven dry: water content is 3-5%
Four, sintering: sintering temperature is 1305 ℃, temperature retention time 150 minutes.
Five, secondary ball milling: add 0.45% high Siberian cocklebur soil, 0.45% calcium carbonate CaCO
3, with the light water of raw material equal weight, 0.65% strontium carbonate SrCO
3, discharging-material size is 0.9-1.2 μ.
Six, sedimentation: the slurry water content after the sedimentation is 25-30%.
Seven, compacting: pulsed magnetic field is that 8000Oe, pressing pressure are 250-300KG/cm.
Eight, oven dry: dry to water content 1.5-2%
Nine, sintering: it is 1250 ℃ that the sintering temperature is filled, and is incubated 100 minutes.
Claims (1)
1, a kind ofly add a certain amount of host element by secondary in process of production, improve iron strontium oxide magnetic can production method, by by following manufacturing procedure: following prescription: mole ratio: Fe
3O
3: S20=1: 5.5-5.7; The addition of high Siberian cocklebur soil, 0.35%-0.5%; The addition of calcium carbonate: 0.4%-0.6%; The addition of strontium carbonate: 0.4%-1.2%, raw material are prepared, processing such as mixing and ball milling, oven dry, sintering, secondary ball milling, sedimentation, compacting, oven dry, sintering, mill processing and composition when it is characterized in that secondary ball milling begins, add the strontium carbonate SrCO of 0.4-1.2%
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105176 CN1050641A (en) | 1989-09-26 | 1989-09-26 | The host element secondary adds the method that improves the iron strontium oxide magnetic energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105176 CN1050641A (en) | 1989-09-26 | 1989-09-26 | The host element secondary adds the method that improves the iron strontium oxide magnetic energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050641A true CN1050641A (en) | 1991-04-10 |
Family
ID=4855944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105176 Pending CN1050641A (en) | 1989-09-26 | 1989-09-26 | The host element secondary adds the method that improves the iron strontium oxide magnetic energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050641A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318349C (en) * | 2004-07-23 | 2007-05-30 | 佛山市顺德区霸菱磁电有限公司 | Process for mfg. ferrite rubber-plastic magnetic powder |
| CN103065760A (en) * | 2011-10-19 | 2013-04-24 | 南通万宝磁石制造有限公司 | Integral type anisotropic multipolar ferrite bead and preparation method thereof |
| CN103693952A (en) * | 2013-12-04 | 2014-04-02 | 江门安磁电子有限公司 | Preparation method of ultra-low-loss MnZn power ferrite material |
| CN104058738A (en) * | 2014-07-11 | 2014-09-24 | 辽宁工业大学 | Sintering process method of strontium ferrite |
-
1989
- 1989-09-26 CN CN 89105176 patent/CN1050641A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318349C (en) * | 2004-07-23 | 2007-05-30 | 佛山市顺德区霸菱磁电有限公司 | Process for mfg. ferrite rubber-plastic magnetic powder |
| CN103065760A (en) * | 2011-10-19 | 2013-04-24 | 南通万宝磁石制造有限公司 | Integral type anisotropic multipolar ferrite bead and preparation method thereof |
| CN103693952A (en) * | 2013-12-04 | 2014-04-02 | 江门安磁电子有限公司 | Preparation method of ultra-low-loss MnZn power ferrite material |
| CN104058738A (en) * | 2014-07-11 | 2014-09-24 | 辽宁工业大学 | Sintering process method of strontium ferrite |
| CN104058738B (en) * | 2014-07-11 | 2015-08-26 | 辽宁工业大学 | A kind of strontium ferrites sintering process method |
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