CN104671760A - Preparation method of wide-temperature ferrite material - Google Patents

Preparation method of wide-temperature ferrite material Download PDF

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CN104671760A
CN104671760A CN201310636352.1A CN201310636352A CN104671760A CN 104671760 A CN104671760 A CN 104671760A CN 201310636352 A CN201310636352 A CN 201310636352A CN 104671760 A CN104671760 A CN 104671760A
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preparation
ferrite material
temperature
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蒋观忠
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TIANJIN HAOGAO MAGNETS CO Ltd
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TIANJIN HAOGAO MAGNETS CO Ltd
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Abstract

The invention provides a preparation method of a wide-temperature ferrite material. The prepared ferrite material comprises the following components in parts by weight: 70-71 parts of Fe2O3, 18.8-19.8 parts of MnO, 9.7-10.7 parts of ZnO, 0.1-0.5 part of TiO2, 0.1-0.5 part of CaCO3, 0.001-0.008 part of SiO2, 0.05-0.2 part of Co2O3. The preparation method comprises the steps of burning the powders in advance and then sanding for 0.5-2h, controlling the temperature of the inlet to 430-510 degrees centigrade and controlling the temperature of the outlet to 100-180 degrees centigrade, and spraying to obtain a finished product material in a spraying tower. According to the preparation method, the induction temperature zone of the wide-temperature ferrite material is reduced, the induction stability is improved greatly, the material is especially applicable for the aspect of railway signal transmission; with the optimized sintering process, the preparation method is easy to operate, the performance of the ferrite material is improved effectively at the same time, and the requirements of mass industrial production are met.

Description

A kind of preparation method of wide temperature Ferrite Material
Technical field
The present invention relates to a kind of preparation method of Ferrite Material, especially a kind of preparation method of wide temperature Ferrite Material.
Background technology
Ferrite Material (ferrite) is made up of the several oxide compound using ferric ion as main positive ion composition, and presents ferrimagnetism or anti-ferromagnetic material.
Ferrite Material is that one has ferromagnetic metal oxide.With regard to electrical characteristic, ferritic resistivity is more much bigger than metal, alloy magnetic material, and also has higher dielectric properties.Ferritic magnetic property has higher magnetic permeability when also showing high frequency.Thus, ferrite has become the broad-spectrum nonmetal magnetic material in high frequency light current field.Because the magnetic energy stored in ferrite unit volume is lower, full close the specific magnetising moment also lower (usually only having 1/3 ~ 1/5 of pure iron), thus limit its application in the low frequency forceful electric power required compared with high magnetic energy density and high-power field.
Ferrite Material is a kind of nonmetal magnetic material, and it prepares sintering by ferric oxide and one or more other metal oxides (such as: nickel oxide, zinc oxide, manganese oxide, magnesium oxide, barium oxide, strontium oxide etc.) to form.Its relative magnetic permeability can up to several thousand, and resistivity is 1011 times of metal, and eddy-current loss is little, are suitable for making high-frequency electromagnetic device.Ferrite has Hard Magnetic, soft magnetism, square magnetic, gyromagnet and pressure magnetic five class.Be once called as ferrite or magnetic ferrites, its production process and outer appearnce seemingly pottery, thus also referred to as ferrite.Ferrite is the composite oxides of iron and other one or more suitable metallic element, and character belongs to semi-conductor, and usually used as magnetic medium application, between ferrite magnetic material and metal or alloy magneticsubstance, most important difference is electroconductibility.Usually the former resistivity is 102 ~ 108 Ω cm, and the latter only has 10-6 ~ 10-4 Ω cm.Wherein, soft magnetic ferrite mainly contains MnZn system, NiZn system, MgZn system three major types; If press application characteristic parametric classification, power ferrite material, high frequency ferrite material, high resistivity material, very high frequency(VHF) soft magnetic ferrite (hexaplanar high frequency ferrite), high frequency high power ferrite material etc. can be divided into.
MnZn based ferrite has high initial permeability, higher saturation induction density, low loss is had at wireless intermediate frequency or low-frequency range, it is the most excellent Ferrite Material of 1 megahertz following band limits magnetic property, conventional MnZn based ferrite initial permeability μ i=400-20000, saturation induction density Bs=400-530mT.The resistivity of MgZn series ferrite material is higher, is mainly used in the deflector coil magnetic core making picture tube or typotron.
NiZn based ferrite frequency of utilization 100kHz ~ 100MHz, the highest 300MHz that uses, this kind of permeability is lower, and resistivity is very high, is generally 105 ~ 107 Ω cm.Therefore, high frequency eddy current losses is little, is the magnetic permeability μ i=5-1500 of the most excellent material of more than 1MHz high band magnetic property, conventional NiZn based material, saturation induction density Bs=250-400mT.
In recent years, along with the application of Ferrite Material is more and more extensive, Ferrite Material has been applied to the manufacture of various inducer, transformer, wave filter and reactance coil, and as hyundai electronics message areas such as computer and peripheral equipment, business automation equipment, digital communication and artificial traffic equipment, internet, household electrical appliance, electromagnetic compatibility equipment, green illumination device, industrial automations, and automobile, aviation, military field.This just has higher to the characteristic of Ferrite Material and has more requirement targetedly.
Because permeability (μ i) variation with temperature will cause the change of inductance value, thus affect the stability of inductance component work, therefore the Ferrite Material for railway signal transmission requires that temperature factor is the smaller the better, and temperature curve change is tending towards smooth, therefore, according to actual needs, develop the Ferrite Material that more can adapt to railway signal transmission needs, there are very important production practice and be worth.
Summary of the invention
Technical problem to be solved by this invention is the preparation method providing a kind of wide temperature Ferrite Material.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A preparation method for wide temperature Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken by above-mentioned parts by weight 2o 370-71 part, MnO18.8-19.8 part, ZnO9.7-10.7 part, TiO 20.1-0.5 part, CaCO 30.1-0.5 part, SiO 20.001-0.008 part, Co 2o 30.05-0.2 part, and polyvinyl alcohol 3-10 part, dispersion agent (also known as defloculating agent) 0.1-0.5 part, defoamer 0.1-0.5 part;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970-1070 DEG C of preburning powdered material, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 0.5-2 hour;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, be sprayed into finished product material through spray tower.
Preferably, the preparation method of above-mentioned wide temperature Ferrite Material, by its weight parts Fe in described step (1) 2o 370.5 part, MnO19.2 part, ZnO9.8 part, TiO 20.4 part, CaCO 30.3 part, SiO 20.007 part, Co 2o 30.15 part.
Preferably, the preparation method of above-mentioned wide temperature Ferrite Material, controls inlet temperature 460 DEG C in described step (3), temperature out 150 DEG C.
The invention has the beneficial effects as follows:
The preparation method of above-mentioned wide temperature Ferrite Material, combined by the specific consumption of the improvement of formula and each component in preparation process, the inductor temperature interval of Ferrite Material is reduced, substantially increases inductance stabilization, be particularly applicable to the application of railway signal transmission aspect; Effectively improve the performance of Ferrite Material while the sintering process optimized makes preparation method easy and simple to handle, be applicable to the needs that large-scale industrial is produced.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
A kind of wide temperature Ferrite Material, by Fe 2o 3, MnO, ZnO, TiO 2, CaCO 3, SiO 2and Co 2o 3composition, wherein, Fe 2o 370.5kg, MnO19.2kg, ZnO9.8kg, TiO 20.4kg, CaCO 30.3kg, SiO 20.007kg, Co 2o 30.15kg.
The preparation method of above-mentioned wide temperature Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370.5kg, MnO19.2kg, ZnO9.8kg, TiO 20.4kg, CaCO 30.3kg, SiO 20.007kg, Co 2o 30.15kg, and polyvinyl alcohol 7kg, dispersion agent 0.4kg, defoamer 0.3kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970-1070 DEG C of preburning powdered material, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 2 hours;
(3) control inlet temperature 460 DEG C, temperature out 150 DEG C, is sprayed into finished product material through spray tower.
Embodiment 2
A kind of wide temperature Ferrite Material, by Fe 2o 3, MnO, ZnO, TiO 2, CaCO 3, SiO 2and Co 2o 3composition, wherein, Fe 2o 371kg, MnO18.8kg, ZnO10.7kg, TiO 20.1kg, CaCO 30.1kg, SiO 20.008kg, Co 2o 30.2kg.
The preparation method of above-mentioned wide temperature Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 371kg, MnO18.8kg, ZnO10.7kg, TiO 20.1kg, CaCO 30.1kg, SiO 20.008kg, Co 2o 30.2kg, and polyvinyl alcohol 10kg, dispersion agent 0.1kg, defoamer 0.1kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 1070 DEG C of preburning powdered materials, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 0.5 hour;
(3) control inlet temperature 510 DEG C, temperature out 180 DEG C, is sprayed into finished product material through spray tower.
Embodiment 3
A kind of wide temperature Ferrite Material, by Fe 2o 3, MnO, ZnO, TiO 2, CaCO 3, SiO 2and Co 2o 3composition, wherein, Fe 2o 370kg, MnO19.8kg, ZnO9.7kg, TiO 20.5kg, CaCO 30.5kg, SiO 20.001kg, Co 2o 30.05kg.
The preparation method of above-mentioned wide temperature Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370kg, MnO19.8kg, ZnO9.7kg, TiO 20.5kg, CaCO 30.5kg, SiO 20.001kg, Co 2o 30.05kg, and polyvinyl alcohol 3kg, dispersion agent 0.5kg, defoamer 0.5kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970 DEG C of preburning powdered materials, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 1 hour;
(3) control inlet temperature 430 DEG C, temperature out 100 DEG C, is sprayed into finished product material through spray tower.
Embodiment 4
A kind of wide temperature Ferrite Material, by Fe 2o 3, MnO, ZnO, TiO 2, CaCO 3, SiO 2and Co 2o 3composition, wherein, Fe 2o 370.7kg, MnO19.5kg, ZnO10kg, TiO 20.2kg, CaCO 30.4kg, SiO 20.003kg, Co 2o 30.1kg.
The preparation method of above-mentioned wide temperature Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370.7kg, MnO19.5kg, ZnO10kg, TiO 20.2kg, CaCO 30.4kg, SiO 20.003kg, Co 2o 30.1kg, and polyvinyl alcohol 5kg, dispersion agent 0.3kg, defoamer 0.3kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 1000 DEG C of preburning powdered materials, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 1.5 hours;
(3) control inlet temperature 480 DEG C, temperature out 160 DEG C, is sprayed into finished product material through spray tower.
The described component of one of embodiment 1-4 is commercially available prod; wherein; described dispersion agent and defoamer are this area generic noun; for specific product; described dispersion agent is also known as defloculating agent, and purchased from Yuncheng Yu Chuan Chemical Co., Ltd., described defoamer is purchased from rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works; each amounts of components increased according to same ratio or reduce, the parts by weight relation of each component of gained all belongs to protection scope of the present invention.
Performance test example:
Tested object: wide temperature Ferrite Material described in embodiment 1,4.
With T18*8*5 toroidal core around 20 circles, with Hp4192A Meter Test inductance value L(test condition 100KHz, 50mV) high-low temperature chamber probe temperature coefficient, probe temperature point (--20 DEG C, 25 DEG C, 60 DEG C), test result is in table 1.
Table 1
Above-mentioned detailed description of carrying out with reference to the preparation method of embodiment to this kind of wide temperature Ferrite Material; illustrative instead of determinate; several embodiments can be listed according to institute's limited range; therefore in the change do not departed under general plotting of the present invention and amendment, should belong within protection scope of the present invention.

Claims (3)

1. a preparation method for wide temperature Ferrite Material, is characterized in that: concrete preparation process is as follows:
(1) Fe is taken by weight 2o 370-71 part, MnO18.8-19.8 part, ZnO9.7-10.7 part, TiO 20.1-0.5 part, CaCO 30.1-0.5 part, SiO 20.001-0.008 part, Co 2o 30.05-0.2 part, and polyvinyl alcohol 3-10 part, dispersion agent 0.1-0.5 part, defoamer 0.1-0.5 part;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970-1070 DEG C of preburning powdered material, in sand grinding process, add TiO 2, CaCO 3, SiO 2and Co 2o 3and polyvinyl alcohol, dispersion agent, defoamer, sand milling 0.5-2 hour;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, be sprayed into finished product material through spray tower.
2. the preparation method of wide temperature Ferrite Material according to claim 1, is characterized in that: by its weight parts Fe in described step (1) 2o 370.5 part, MnO19.2 part, ZnO9.8 part, TiO 20.4 part, CaCO 30.3 part, SiO 20.007 part, Co 2o 30.15 part.
3. the preparation method of wide temperature Ferrite Material according to claim 1, is characterized in that: control inlet temperature 460 DEG C in described step (3), temperature out 150 DEG C.
CN201310636352.1A 2013-11-29 2013-11-29 Preparation method of wide-temperature ferrite material Pending CN104671760A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105461296A (en) * 2015-11-20 2016-04-06 无锡斯贝尔磁性材料有限公司 A high-BS low-loss manganese zinc ferrite magnetic material and a preparing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105461296A (en) * 2015-11-20 2016-04-06 无锡斯贝尔磁性材料有限公司 A high-BS low-loss manganese zinc ferrite magnetic material and a preparing method thereof
CN105461296B (en) * 2015-11-20 2018-12-14 无锡斯贝尔磁性材料有限公司 A kind of high BS low-loss manganese zine ferrite magnetic material and preparation method thereof

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Application publication date: 20150603