CN105384428A - 99%-above alumina granulating powder and preparation method thereof - Google Patents
99%-above alumina granulating powder and preparation method thereof Download PDFInfo
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- CN105384428A CN105384428A CN201510760437.XA CN201510760437A CN105384428A CN 105384428 A CN105384428 A CN 105384428A CN 201510760437 A CN201510760437 A CN 201510760437A CN 105384428 A CN105384428 A CN 105384428A
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000000843 powder Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000498 ball milling Methods 0.000 claims abstract description 18
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005469 granulation Methods 0.000 claims abstract description 11
- 230000003179 granulation Effects 0.000 claims abstract description 11
- 239000010419 fine particle Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 15
- 238000005453 pelletization Methods 0.000 claims description 15
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 13
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000011362 coarse particle Substances 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 abstract 1
- 238000013019 agitation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/10—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 aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62695—Granulation or pelletising
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5463—Particle size distributions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to 99%-above alumina granulating powder and a preparation method thereof. The 99%-above alumina granulating powder comprises the following components in parts by weight: 100-200 parts of high-aluminum alumina balls, 50-150 parts of a calcined material CT-3000SG, 1-5 parts of a binder, 0.1-1 part of a dispersant, 0.1-1 part of a demolding agent, 0.1-1 part of yttria, 0.1-1 part of magnesia and 50-150 parts of deionized water. The preparation method comprises the following steps: carrying out ball milling, sieving after pulp is obtained, stirring, and processing with magnets; carrying out centrifugal spraying granulation; removing coarse and fine particles from granulated powder by virtue of a sieve, then removing iron and impurities, and finally homogenizing. The granulating powder is low in water content and high in apparent density; after blank molding, a green body is high in density, good in stability and tenacity and excellent in post-machining performance and does not easily collapse from corners; the preparation method is simple in process and low in cost and has good application prospect.
Description
Technical field
The invention belongs to alumina-ceramic field, particularly a kind of more than 99% aluminum oxide pelletizing and preparation method thereof.
Background technology
The series of characteristics such as alumina-ceramic has high mechanical strength, high volume specific resistance, good electrical insulating property, and high strength is wear-resistant, anti-oxidant.Be widely used as structure unit and functional device porcelain piece, as the wear resistant corrosion resistant component in mechanical chemical industry field, crucible protective tube, the refractory materials that metallurgical industry uses, the used in electronic industry porcelain pieces such as substrate insulator radome microwave ionogen.Dry-pressing formed or isostatic pressing in current Production Technique of Alumina Ceramics, is needed ceramic size to be formed in granular powder by spraying dry, requires good mobility, particle has certain intensity, be not broken in transport and reinforced process.But green density is not high after making base by the powder that current technique finally obtains, post-treatment performance is bad.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of more than 99% aluminum oxide pelletizing and preparation method thereof, and this powder water content is few, loose density is high, green density high, good stability, good toughness after making base, be not easy to collapse angle, post-treatment performance is outstanding; Preparation method's technique is simple, and cost is low, has a good application prospect.
A kind of more than 99% aluminum oxide pelletizing of the present invention, its component comprises: by mass fraction, high alumina alumina balls 100 ~ 200 parts, calcining material CT-3000SG (method Guoan steps Aluminum) 50 ~ 150 parts, binding agent 1 ~ 5 part, dispersion agent 0.1 ~ 1 part, releasing agent 0.1 ~ 1 part, yttrium oxide (as additive, reducing sintering temperature) 0.1 ~ 1 part, 0.1 ~ 1 part, magnesium oxide (as agglutinant) and deionized water 50 ~ 150 parts.
Described high alumina alumina balls purity is more than 99%.
Described binding agent is P-222 (Japanese Zhong jing grease), wax class emulsion.The interpolation of P-222 is in order to green strength is not by humidity effect, and green compact good stability, good toughness, is not easy to collapse angle, and post-treatment performance is outstanding, sinters out high-density green compact.
Described dispersion agent is D-134 (Japanese Zhong jing grease), water system, main component polyethylene carboxylic acid.Adding D-134 is in order to few water had both dispersibled submicron order or nanometer grade powder, in order to better improve the solid content of slurry, controlling water content, improving the loose density of powder, and obtaining high green density.
Described releasing agent is S-920 (Japanese Zhong jing grease), the acid emulsion of hard.The interpolation of S-920 is the mobility in order to improve granulation material, is easy to the demoulding.
Preferably, described component comprises: by mass fraction, high alumina alumina balls 150 parts, calcining material CT-3000SG100 part, binding agent 2 parts, dispersion agent 0.6 part, releasing agent 0.6 part, yttrium oxide 0.2 part, 0.4 part, magnesium oxide and deionized water 50 parts.
Preferably, described component comprises: by mass fraction, high alumina alumina balls 100 parts, calcining material CT-3000SG50 part, binding agent 3 parts, dispersion agent 0.2 part, releasing agent 0.5 part, yttrium oxide 0.4 part, 0.8 part, magnesium oxide and deionized water 80 parts.
Preferably, described component comprises: by mass fraction, high alumina alumina balls 150 parts, calcining material CT-3000SG150 part, binding agent 1 part, dispersion agent 0.6 part, releasing agent 0.6 part, yttrium oxide 0.1 part, 0.2 part, magnesium oxide and deionized water 150 parts.
The preparation method of a kind of more than 99% aluminum oxide pelletizing of the present invention, comprising:
(1) first in ball mill, high alumina alumina balls are added, add calcining material CT-3000SG, deionized water, yttrium oxide, magnesium oxide and dispersion agent ball milling 40 ~ 50h subsequently successively, then add binding agent ball milling 1 ~ 3h, finally add releasing agent ball milling 0.5 ~ 1h;
(2) obtain slurry after ball milling, sieve after pulp, stirred magnet; Carry out centrifugal spray granulation subsequently; Powder after granulation is thick with screen cloth removing, fine particle, then impurity is crossed in deironing, and last homogenizing 24h ~ 36h dry-pressing metal mould forming method makes base.
The processing parameter of the centrifugal spray granulation in described step (2) is: inlet temperature is set as 220 DEG C, and temperature out is set as 95 DEG C, and rotating speed is 15000rpm, and negative pressure is 120pa.
beneficial effect
Powder water content of the present invention is few, loose density is high, green density high, good stability, good toughness after making base, be not easy to collapse angle, post-treatment performance is outstanding; Preparation method's technique is simple, and cost is low, has a good application prospect.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Ball mill adopts anistree ball mill, the high alumina alumina balls (specification Φ 6, Φ 8, Φ 12 (mm) 3:3:4 in mass ratio) of more than 150Kg99% are put in bucket, drop into 100KgCT-3000SG, 50Kg deionized water, 200g yttrium oxide, 400g magnesium oxide, 600gD-134 carry out ball milling 46h, add 2kgP-222 ball milling 1.5h, 600gS-920 ball milling 0.5h after pulp, filter with 80 eye mesh screens after slurry pulp, slurry enters agitation vat and carries out stirred magnet.
Start atomizer tablets press, inlet temperature is set as 220 DEG C, and temperature out is set as 95 DEG C, and rotating speed is 15000rpm, and negative pressure is 120pa.
Powder after granulation 60 orders, 325 eye mesh screens, remove thick, fine particle, powder must carry out deironing and cross impurity, and powder carries out homogenizing 24h and uses dry-pressing metal mould forming method to make base.
Detection data are as follows:
Embodiment 2
Ball mill adopts anistree ball mill, the high alumina alumina balls (specification Φ 6, Φ 8, Φ 12 (mm) 3:3:4 in mass ratio) of more than 100Kg99% are put in bucket, drop into 50KgCT-3000SG, 80Kg deionized water, 400g yttrium oxide, 800g magnesium oxide, 200gD-134 carry out ball milling 40h, add 3kgP-222 ball milling 1h, 500gS-920 ball milling 0.6h after pulp, filter with 80 eye mesh screens after slurry pulp, slurry enters agitation vat and carries out stirred magnet.
Start atomizer tablets press, inlet temperature is set as 220 DEG C, and temperature out is set as 95 DEG C, and rotating speed is 15000rpm, and negative pressure is 120pa.
Powder after granulation 60 orders, 325 eye mesh screens, remove thick, fine particle, powder must carry out deironing and cross impurity, and powder carries out homogenizing 28h and uses dry-pressing metal mould forming method to make base.
Detection data are as follows:
Embodiment 3
Ball mill adopts anistree ball mill, the high alumina alumina balls (specification Φ 6, Φ 8, Φ 12 (mm) 3:3:4 in mass ratio) of more than 150Kg99% are put in bucket, drop into 150KgCT-3000SG, 150Kg deionized water, 100g yttrium oxide, 200g magnesium oxide, 600gD-134 carry out ball milling 50h, add 1kgP-222 ball milling 3h, 600gS-920 ball milling 1h after pulp, filter with 80 eye mesh screens after slurry pulp, slurry enters agitation vat and carries out stirred magnet.
Start atomizer tablets press, inlet temperature is set as 220 DEG C, and temperature out is set as 95 DEG C, and rotating speed is 15000rpm, and negative pressure is 120pa.
Powder after granulation 60 orders, 325 eye mesh screens, remove thick, fine particle, powder must carry out deironing and cross impurity, and powder carries out homogenizing 36h and uses dry-pressing metal mould forming method to make base.
Detection data are as follows:
Claims (10)
1. an aluminum oxide pelletizing, it is characterized in that: its component comprises: by mass fraction, high alumina alumina balls 100 ~ 200 parts, calcining material CT-3000SG50 ~ 150 part, binding agent 1 ~ 5 part, dispersion agent 0.1 ~ 1 part, releasing agent 0.1 ~ 1 part, yttrium oxide 0.1 ~ 1 part, 0.1 ~ 1 part, magnesium oxide and deionized water 50 ~ 150 parts.
2. a kind of more than 99% aluminum oxide pelletizing according to claim 1, is characterized in that: described high alumina alumina balls purity is more than 99%.
3. a kind of more than 99% aluminum oxide pelletizing according to claim 1, is characterized in that: described binding agent is P-222.
4. a kind of more than 99% aluminum oxide pelletizing according to claim 1, is characterized in that: described dispersion agent is D-134.
5. a kind of more than 99% aluminum oxide pelletizing according to claim 1, is characterized in that: described releasing agent is S-920.
6. a kind of more than 99% aluminum oxide pelletizing according to claim 1, it is characterized in that: described component comprises: by mass fraction, high alumina alumina balls 150 parts, calcining material CT-3000SG100 part, binding agent 2 parts, dispersion agent 0.6 part, releasing agent 0.6 part, yttrium oxide 0.2 part, 0.4 part, magnesium oxide and deionized water 50 parts.
7. a kind of more than 99% aluminum oxide pelletizing according to claim 1, it is characterized in that: described component comprises: by mass fraction, high alumina alumina balls 100 parts, calcining material CT-3000SG50 part, binding agent 3 parts, dispersion agent 0.2 part, releasing agent 0.5 part, yttrium oxide 0.4 part, 0.8 part, magnesium oxide and deionized water 80 parts.
8. a kind of more than 99% aluminum oxide pelletizing according to claim 1, it is characterized in that: described component comprises: by mass fraction, high alumina alumina balls 150 parts, calcining material CT-3000SG150 part, binding agent 1 part, dispersion agent 0.6 part, releasing agent 0.6 part, yttrium oxide 0.1 part, 0.2 part, magnesium oxide and deionized water 150 parts.
9. a preparation method for more than 99% aluminum oxide pelletizing as claimed in claim 1, comprising:
(1) first in ball mill, high alumina alumina balls are added, add calcining material CT-3000SG, deionized water, yttrium oxide, magnesium oxide and dispersion agent ball milling 40 ~ 50h subsequently successively, then add binding agent ball milling 1 ~ 3h, finally add releasing agent ball milling 0.5 ~ 1h;
(2) obtain slurry after ball milling, sieve after pulp, stirred magnet; Carry out centrifugal spray granulation subsequently; Powder after granulation is thick with screen cloth removing, fine particle, then impurity is crossed in deironing, and last homogenizing 24h ~ 36h dry-pressing metal mould forming method makes base.
10. the preparation method of a kind of more than 99% aluminum oxide pelletizing according to claim 9, it is characterized in that: the processing parameter of the centrifugal spray granulation in described step (2) is: inlet temperature is set as 220 DEG C, temperature out is set as 95 DEG C, rotating speed is 15000rpm, and negative pressure is 120pa.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107382283A (en) * | 2017-09-06 | 2017-11-24 | 盐城市华康电热绝缘材料厂 | The dry-pressing preparation method of magnesia ceramics |
| CN108911716A (en) * | 2018-08-15 | 2018-11-30 | 娄底市安地亚斯电子陶瓷有限公司 | A kind of auto parts and components manufacture ceramic prilling powder and preparation method thereof |
| WO2019222953A1 (en) * | 2018-05-24 | 2019-11-28 | 湖州晶矽粉体材料有限公司 | Preparation method for inorganic filler powder without magnetic foreign matter, and inorganic filler powder prepared thereby and application thereof |
| CN110790577A (en) * | 2019-12-13 | 2020-02-14 | 东莞信柏结构陶瓷股份有限公司 | Black alumina ceramic granulation powder, preparation method thereof and black alumina ceramic |
| CN114133253A (en) * | 2021-12-06 | 2022-03-04 | 山东硅元新型材料股份有限公司 | Alumina granulation powder, preparation method thereof and ceramic component |
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| CN104129977A (en) * | 2014-06-30 | 2014-11-05 | 金刚新材料股份有限公司 | Preparation method of alumina granulation powder specially used for hot pressing water valve block |
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Cited By (6)
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| CN107382283A (en) * | 2017-09-06 | 2017-11-24 | 盐城市华康电热绝缘材料厂 | The dry-pressing preparation method of magnesia ceramics |
| WO2019222953A1 (en) * | 2018-05-24 | 2019-11-28 | 湖州晶矽粉体材料有限公司 | Preparation method for inorganic filler powder without magnetic foreign matter, and inorganic filler powder prepared thereby and application thereof |
| CN111819161A (en) * | 2018-05-24 | 2020-10-23 | 浙江三时纪新材科技有限公司 | Preparation method of inorganic filler powder without magnetic foreign matters, inorganic filler powder prepared by preparation method and application of inorganic filler powder |
| CN108911716A (en) * | 2018-08-15 | 2018-11-30 | 娄底市安地亚斯电子陶瓷有限公司 | A kind of auto parts and components manufacture ceramic prilling powder and preparation method thereof |
| CN110790577A (en) * | 2019-12-13 | 2020-02-14 | 东莞信柏结构陶瓷股份有限公司 | Black alumina ceramic granulation powder, preparation method thereof and black alumina ceramic |
| CN114133253A (en) * | 2021-12-06 | 2022-03-04 | 山东硅元新型材料股份有限公司 | Alumina granulation powder, preparation method thereof and ceramic component |
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Denomination of invention: A 99% or more alumina granulation powder and its preparation method Effective date of registration: 20230810 Granted publication date: 20180619 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: SHANGHAI COMPANION PRECISION CERAMICS Co.,Ltd. Registration number: Y2023310000453 |
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Denomination of invention: A granulation powder of over 99% alumina and its preparation method Granted publication date: 20180619 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: SHANGHAI COMPANION PRECISION CERAMICS Co.,Ltd. Registration number: Y2024310000746 |