CN106083025A - A kind of preparation method of high-performance Strontium ferrite powder - Google Patents
A kind of preparation method of high-performance Strontium ferrite powder Download PDFInfo
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- CN106083025A CN106083025A CN201610464816.9A CN201610464816A CN106083025A CN 106083025 A CN106083025 A CN 106083025A CN 201610464816 A CN201610464816 A CN 201610464816A CN 106083025 A CN106083025 A CN 106083025A
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- 239000000843 powder Substances 0.000 title claims abstract description 66
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 63
- 229910052712 strontium Inorganic materials 0.000 title claims abstract description 53
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 48
- 239000002994 raw material Substances 0.000 claims description 46
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 20
- 229910052681 coesite Inorganic materials 0.000 claims description 16
- 229910052906 cristobalite Inorganic materials 0.000 claims description 16
- 239000000377 silicon dioxide Substances 0.000 claims description 16
- 229910052682 stishovite Inorganic materials 0.000 claims description 16
- 229910052905 tridymite Inorganic materials 0.000 claims description 16
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 230000005389 magnetism Effects 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 238000003746 solid phase reaction Methods 0.000 description 12
- 238000010671 solid-state reaction Methods 0.000 description 12
- 239000013078 crystal Substances 0.000 description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 10
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 10
- 239000011268 mixed slurry Substances 0.000 description 10
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 10
- 238000005245 sintering Methods 0.000 description 10
- 229910000018 strontium carbonate Inorganic materials 0.000 description 10
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 10
- QZQVBEXLDFYHSR-UHFFFAOYSA-N gallium(III) oxide Inorganic materials O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 description 9
- 229910052746 lanthanum Inorganic materials 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910052684 Cerium Inorganic materials 0.000 description 4
- 229910000421 cerium(III) oxide Inorganic materials 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium oxide Inorganic materials [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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Abstract
The invention discloses the preparation method of a kind of high-performance Strontium ferrite powder.The method is the most specifically carried out: (1) dispensing；(2) mixing；(3) anhydrate；(4) shatter；(5) pre-burning；(6) powder process；(7) test.The preparation method of the high-performance Strontium ferrite powder of the present invention, it uses pressure filter to anhydrate, treating capacity is big and speed is fast, the part water in slurry can be removed, mixtures of materials water content is made to be reduced to 15 19%, more traditional production technology 40% 50% water content ratio, is greatly lowered, reduces energy consumption needed for pre-burning；The present invention anhydrate process after material be bulk, it is simple to be delivered to shatter device by belt conveyor；Being 10 30mm through shatter process material block footpath, on the one hand piece material entrance roller-way electrical kiln burn-in time is short and abundant, and the material on the other hand obtained after piece material pre-burning is spherical, is conducive to improving the grinding efficiency of ball mill.
Description
Technical field
The invention belongs to magnetic material preparing technical field, particularly relate to the preparation of a kind of high-performance Strontium ferrite powder
Method.
Background technology
Strontium ferrite powder is a kind of magnetic material with ferrum oxide as primary raw material, as important electric function material
Material, is made into various permanent magnet devices, is widely used among automobile, electric tool, household electrical appliance, the most in recent years, and household electric
Promoting the use of of device variable-frequency direct-current motor, the demand to high-performance Strontium ferrite powder, in the trend that doubles year by year.
Domestic and international existing Strontium ferrite powder traditional processing technology flow process is: feedstock analysis → dispensing → batch mixing → return
Rotary kiln pre-burning → coarse crushing → strontium ferrite preburning powdered material.Concrete production uses two kinds of methods: the first is former with hot rolling iron scale
Material, uses dry method mode to produce, and the batch mixing existing for dry type material preparation technology is uneven, and dispersive property is poor, it is difficult to obtain
Higher magnetic property magnet Strontium ferrite powder；The second is with cold rolling iron oxide red as raw material, uses wet method mode to produce
Preburning material, the magnet made, magnetic property is higher, is used in various fields widely.But use wet type production technology
The water content of slip is more (typically at 40%-50%), and energy resource consumption is relatively big, and (energy resource consumption of more than 80% is used for being evaporated slip
In moisture content), production efficiency is low, and magnetic property fluctuation is big.
Summary of the invention
The present invention is directed to the batch mixing existing for existing dry preparation process uneven, dispersive property is poor, it is difficult to obtain relatively
The shortcoming of the Strontium ferrite powder of high magnetic property, it is provided that a kind of preparation method, the method can make the contact surface of material powder
Long-pending increase, good dispersion, various supplementary materials are sufficiently mixed, and can obtain the Strontium ferrite powder of higher magnetic property.
Meanwhile, present invention is alternatively directed to water content existing for existing wet method preparation process more, energy resource consumption is relatively big,
Production efficiency is low, the magnetic property big shortcoming of fluctuation, it is provided that a kind of material mix homogeneously, energy resource consumption are less, production efficiency relatively
The preparation method of high strontium ferrite.
In order to realize the technical purpose of the present invention, the technical scheme of employing is:
The preparation method of a kind of high-performance Strontium ferrite powder, described magnet is hexaplanar, and its chemical structural formula is
Sr1-xRx(Fe12-yNy)zO19, wherein 0.03≤x≤0.80,0.02≤y≤0.50,0.6≤z≤1.3, R is La, N (4) Ga, Ce
In at least one element, and must to contain La, N be at least one element in Co, Zn, Ni, Mn, Al, and must contain Co, by with
Lower step is specifically carried out:
(1) dispensing: be Sr according to described chemical structural formula1-xRx(Fe12-yNy)zO19, weigh raw material；
(2) mixing: load weighted raw material is first mixed in water, enters ball mill, material: ball: water=1:5:1.5, by weight
Percentage ratio adds additive, then carries out mix and blend 3-8 hour, obtains slurry；
(3) anhydrating: slurry is carried out process of anhydrating, the moisture control of material is at 15-19%；
(4) shatter: the lump material after anhydrating carries out shatter being processed into 10-30mm piece material；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, pushes roller-way electrical kiln pre-burning；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2-3um；
(7) test: use magnetism testing instrument that strontium ferrite powder is carried out magnetic property detection.
Further, the additive described in step (2) includes that the first additive, the first additive are Al2O3、H3BO3、
SiO2、CaCO3、B2O3And Cr2O3Mixture, wherein: 0.05wt%≤Al2O3≤ 0.5wt%, 0.1wt%≤H3BO3≤
0.4wt%, 0.1wt%≤SiO2≤ 0.5wt%, 0.2wt%≤CaCO3≤ 1.2wt%, 0.05≤B2O3≤ 0.3wt%,
0.1wt%≤Cr2O3≤ 0.6wt%, inhibiting grain growth, hydrotropy promotes solid state reaction, improves performance.
Further, the additive described in step (2) also includes Second addition, Second addition be containing Ga, Cr,
The oxide of at least one element in Zn, Si, it accounts for raw material gross mass percentage ratio is 0.5wt%-1.5wt%, and this additive can
Promote that solid state reaction is complete with hydrotropy, crystal grain thinning, improves magnetic property.
Further, the process of anhydrating described in step (3) uses pressure filter, and treating capacity is big and speed is fast.
Further, the high-alumina refractory alms bowl bowl wall described in step (5) is dispersed with a large amount of 5 millimeters of apertures, increases
The oxidation reactions that material occurs after 900 DEG C with the contacting of air, beneficially material in pre-burning in burn-in process can
The most completely, the hexaplanar strontium ferrite that purity is higher is generated.
Further, the roller-way electrical kiln described in step (5) has 48 meters of long kiln body, every plate 22～25 kilograms of things of carrying
Material, fltting speed, at 3-7 minute/plate, enters kiln pre-burning continuously, and calcined temperature controls at 1290 ± 10 DEG C.
Compared with prior art, the invention have the advantage that
1), the preparation method of the high-performance Strontium ferrite powder of the present invention, it uses pressure filter to anhydrate, treating capacity
Big and speed fast, the part water in slurry can be removed, make mixtures of materials water content be reduced to 15-19%, more traditional life
Production. art 40%-50% water content ratio, is greatly lowered, reduces energy consumption needed for pre-burning；
2), the present invention anhydrate process after material be bulk, it is simple to be delivered to shatter device by belt conveyor；
3), be 10-30mm through shatter process material block footpath, on the one hand piece material enter roller-way electrical kiln burn-in time short
And fully, the material on the other hand obtained after piece material pre-burning is spherical, be conducive to improving the grinding efficiency of ball mill；
4), be dispersed with a large amount of 5 millimeters of apertures on the high-alumina refractory alms bowl bowl wall that uses of the method for the present invention, increase material with
The oxidation reaction that the contact of air, beneficially material occur after 900 DEG C can be fully complete, generates the hexagonal that purity is higher
Crystallographic system strontium ferrite.
5), the method for the present invention changes the traditional handicraft of domestic use rotary kiln (owing to using combustion gas, warm area difficulty control
System, atmosphere is poor, especially big by the fluctuation of ambient pressure transformation temperature), use temperature-controllable good, thermograde is notable, furnace atmosphere
Good roller-way electrical kiln, it is ensured that the requirement that the narrow temperature needed for high-performance Strontium ferrite powder is interval and atmosphere is good；
6), the method relatively traditional processing technology of the present invention compare, mixed material remove water, re-using can be collected,
Use as dispensing blending water, rotating wash bowl grinding machine etc., environmentally safe, while reducing energy consumption, it is achieved water resource is efficient
Utilize；
7) the high-performance Strontium ferrite powder performance that, prepared by the inventive method is high, and (prepared by the most domestic traditional method
Be equivalent to TDK9 series high-performance Strontium ferrite powder), good stability.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R be La, N be Co, La2O3:
7.41wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3: 2.01wt%, weigh raw material,
Proportioning raw materials is shown in Table 1；
(2) mixing: mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then presses
Percentage by weight adds 0.5wt%Al2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3；In order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with containing Ga2O3, its
Accounting for raw material gross mass percentage ratio is 1.0wt%, then carries out mix and blend 3 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 19%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1290 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls in 3 μm；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The high-performance Strontium ferrite powder that test obtains, performance data is as shown in table 2, conventional preparation techniques accordingly
Strontium ferrite powder performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 2
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Nd, and N is Co, Ni,
La2O3: 5.41wt%, Nd2O3: 2.0wt%, CaCO3: 3.17wt%, NiO:1.0wt%, Co2O3: 1.26wt%, Fe2O3:
85.15wt%, SrCO3: 2.01wt%, weigh raw material, proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with Ga2O3, it accounts for former
Material gross mass percentage ratio is 1.0wt%, then carries out mix and blend 4 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 16%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 4 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1290 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2.5um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 3
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R be La, N be Co, La2O3:
7.41wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3: 2.01wt%, weigh raw material,
Proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with ZnO, Ga2O3, its
Accounting for raw material gross mass percentage ratio is 1.3wt%, then carries out mix and blend 8 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 17%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 10mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 5 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1290 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2.8um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, the product magnet prepared accordingly
As shown in table 3.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 4
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Ce, and N is Co, Ni,
La2O3: 6.61wt%, CaCO3: 3.17wt%, Ce2O3: 0.8wt%, Co2O3: 1.56wt%, Fe2O3: 85.15wt%, NiO:
0.7wt%, SrCO3: 2.01wt%, weigh raw material, proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with SiO2、Cr2O3、
Ga2O3, it accounts for raw material gross mass percentage ratio is 1.5wt%, then carries out mix and blend 6 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 16%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 4 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1280 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2.5um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 5
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Ce, and N is Co, La2O3:
6.91wt%, Ce2O3: 0.5wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3:
2.01wt%, weighs raw material, and proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with ZnO, Cr2O3、
Ga2O3, it accounts for raw material gross mass percentage ratio is 1wt%, then carries out mix and blend 5 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 15%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1300 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 6
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R be La, N be Co, La2O3:
7.41wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3: 2.01wt%, weigh raw material,
Proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with Ga2O3, it accounts for former
Material gross mass percentage ratio is 1.5wt%, then carries out mix and blend 5 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 16%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1290 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 7
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Nd, and N is Co, Ni,
La2O3: 5.91wt%, Nd2O3: 1.5wt%, CaCO3: 3.17wt%, Co2O3: 1.76wt%, Fe2O3: 85.15wt%, NiO:
0.5wt%, SrCO3: 2.01wt%, weigh raw material, proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with Ga2O3, it accounts for former
Material gross mass percentage ratio is 1.2wt%, then carries out mix and blend 7 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 19%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1300 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 8
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R be La, N be Co, La2O3:
7.41wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3: 2.01wt%, weigh raw material,
Proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improve magnetic property, be also added with ZnO, it accounts for raw material
Gross mass percentage ratio is 1.0wt%, then carries out mix and blend 6 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 15%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1290 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 9
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Ce, and N is Co, Ni,
La2O3: 6.31wt%, Ce2O3: 0.5wt%, CaCO3: 3.17wt%, Co2O3: 1.76wt%, Fe2O3: 85.15wt%, NiO:
1.1wt%, SrCO3: 2.01wt%, weigh raw material, proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with Cr2O3、Ga2O3、
SiO2, it accounts for raw material gross mass percentage ratio is 1.5wt%, then carries out mix and blend 7 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 19%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1300 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Embodiment 10
(1) dispensing: by chemical structural formula Sr0.5R0.5Fe11.7N0.3O19Composition requirement, R is La, Ce, and N is Co, La2O3:
6.71wt%, Ce2O3: 0.7wt%, CaCO3: 3.17wt%, Co2O3: 2.26wt%, Fe2O3: 85.15wt%, SrCO3:
2.01wt%, weighs raw material, and proportioning raw materials is shown in Table 1；
(2) mixing: first mixed in water by load weighted raw material, mixes with ball mill, material: ball: water=1:5:1.5, then
Add 0.5wt%Al by weight percentage2O3, 0.1wt%H3BO3, 0.3wt%SiO2, 0.7wt%CaCO3, 0.3wt%B2O3With
0.1wt%Cr2O3, in order to hydrotropy promotes that solid state reaction is complete, crystal grain thinning, improves magnetic property, has been also added with Cr2O3、Ga2O3、
ZnO, it accounts for raw material gross mass percentage ratio is 0.9wt%, then carries out mix and blend 7 hours；
(3) anhydrate: by above-mentioned mixed slurry, carry out process of anhydrating, material water ratio 19%；
(4) shatter: to carry out the block after above-mentioned anhydrating shatter being processed into a diameter of about 20mm fritter；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, according to 3 minutes/plate, pushes 48m roller-way electrical kiln pre-burning temperature
Degree is set in 1300 DEG C；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2um；
(7) test: use magnetism testing instrument that strontium ferrite pelletized powder samples is carried out magnetic property detection.
The permanent magnetic ferrite magnet that detection sintering obtains, performance data is as shown in table 2, conventional preparation techniques strontium accordingly
Ferrite prefiring material performance (rotary kiln pre-burning) is as shown in table 3.
Table 1 preparation method of the present invention proportioning raw materials
Table 2 preparation method of the present invention high-performance Strontium ferrite powder magnetic property testing result
Table 3 conventional preparation techniques Strontium ferrite powder performance test results accordingly (rotary kiln pre-burning)
Understand from two above table, under identical formula and Slurry Granularity same case, prepared by the present invention
The magnetic property of Strontium ferrite powder is better than conventional preparation techniques (rotary kiln pre-burning), and performance has reached to be equivalent to TDK permanent magnetism material
Material FB9 continuous request.Preparation method of the present invention is simple, saves energy consumption, and production efficiency is high, pollution-free, with traditional preparation methods
The production cost of material per ton is suitable, improves the market competitiveness of Strontium ferrite powder.
Claims (6)
1. a preparation method for high-performance Strontium ferrite powder, described magnet is hexaplanar, and its chemical structural formula is
Sr1-xRx(Fe12-yNy)zO19, wherein 0.03≤x≤0.80,0.02≤y≤0.50,0.6≤z≤1.3, R is La, N (4) Ga, Ce
In at least one element, and must to contain La, N be at least one element in Co, Zn, Ni, Mn, Al, and must contain Co, and it is special
Levy and be, the most specifically carry out:
(1) dispensing: be Sr according to described chemical structural formula1-xRx(Fe12-yNy)zO19, weigh raw material；
(2) mixing: load weighted raw material is first mixed in water, enters ball mill, material: ball: water=1:5:1.5, by weight percentage
Than adding additive, then carry out mix and blend 3-8 hour, obtain slurry；
(3) anhydrating: slurry is carried out process of anhydrating, the moisture control of material is at 15-19%；
(4) shatter: the lump material after anhydrating carries out shatter being processed into 10-30mm piece material；
(5) pre-burning: loaded by piece material in high-alumina refractory alms bowl, pushes roller-way electrical kiln pre-burning；
(6) powder process: using dry ball that the block after pre-burning is broken into powder, coarse granularity controls at 2-3um；
(7) test: use magnetism testing instrument that strontium ferrite powder is carried out magnetic property detection.
The preparation method of high-performance Strontium ferrite powder the most according to claim 1, it is characterised in that in step (2)
Described additive includes that the first additive, the first additive are Al2O3、H3BO3、SiO2、CaCO3、B2O3And Cr2O3Mixing
Thing, wherein: 0.05wt%≤Al2O3≤ 0.5wt%, 0.1wt%≤H3BO3≤ 0.4wt%, 0.1wt%≤SiO2≤
0.5wt%, 0.2wt%≤CaCO3≤ 1.2wt%, 0.05≤B2O3≤ 0.3wt%, 0.1wt%≤Cr2O3≤ 0.6wt%.
The preparation method of high-performance Strontium ferrite powder the most according to claim 1, it is characterised in that in step (2)
Described additive also includes Second addition, and Second addition is containing the oxidation of at least one element in Ga, Cr, Zn, Si
Thing, it accounts for raw material gross mass percentage ratio is 0.5wt%-1.5wt%.
The preparation method of high-performance Strontium ferrite powder the most according to claim 1, it is characterised in that in step (3)
Described process of anhydrating uses pressure filter.
The preparation method of high-performance Strontium ferrite powder the most according to claim 1, it is characterised in that in step (5)
Described in high-alumina refractory alms bowl bowl wall on be dispersed with a large amount of 5 millimeters of apertures.
The preparation method of high-performance Strontium ferrite powder the most according to claim 1, it is characterised in that in step (5)
Described roller-way electrical kiln has 48 meters of long kiln body, and every plate 22～25 kilograms of materials of carrying, fltting speed was at 3-7 minute/plate, even
Continuing into kiln pre-burning, calcined temperature controls at 1290 ± 10 DEG C.
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| CN108975736A (en) * | 2018-08-16 | 2018-12-11 | 山东大学 | A kind of method that electric heating roller kilns fire sulphate aluminium cement |
| CN109336579A (en) * | 2018-11-14 | 2019-02-15 | 横店集团东磁股份有限公司 | A kind of motor Ferrite Material and preparation method thereof |
| CN111362686A (en) * | 2019-12-05 | 2020-07-03 | 横店集团东磁股份有限公司 | Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof |
| CN112939590A (en) * | 2021-03-12 | 2021-06-11 | 电子科技大学 | Hexahexaferrite material for X-band quasi-planar device and preparation method thereof |
| CN115784732A (en) * | 2022-11-25 | 2023-03-14 | 中国科学院宁波材料技术与工程研究所 | Ce-Mn doped strontium ferrite and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975736A (en) * | 2018-08-16 | 2018-12-11 | 山东大学 | A kind of method that electric heating roller kilns fire sulphate aluminium cement |
| CN109336579A (en) * | 2018-11-14 | 2019-02-15 | 横店集团东磁股份有限公司 | A kind of motor Ferrite Material and preparation method thereof |
| CN111362686A (en) * | 2019-12-05 | 2020-07-03 | 横店集团东磁股份有限公司 | Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof |
| CN112939590A (en) * | 2021-03-12 | 2021-06-11 | 电子科技大学 | Hexahexaferrite material for X-band quasi-planar device and preparation method thereof |
| CN112939590B (en) * | 2021-03-12 | 2022-10-14 | 电子科技大学 | Hexahexaferrite material for X-band quasi-planar device and preparation method thereof |
| CN115784732A (en) * | 2022-11-25 | 2023-03-14 | 中国科学院宁波材料技术与工程研究所 | Ce-Mn doped strontium ferrite and preparation method and application thereof |
| CN115784732B (en) * | 2022-11-25 | 2023-09-05 | 中国科学院宁波材料技术与工程研究所 | Ce-Mn doped strontium ferrite and preparation method and application thereof |
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