CN1218874C - Method Fr manufacturing ultramicro alumina powder - Google Patents
Method Fr manufacturing ultramicro alumina powder Download PDFInfo
- Publication number
- CN1218874C CN1218874C CN 03117890 CN03117890A CN1218874C CN 1218874 C CN1218874 C CN 1218874C CN 03117890 CN03117890 CN 03117890 CN 03117890 A CN03117890 A CN 03117890A CN 1218874 C CN1218874 C CN 1218874C
- Authority
- CN
- China
- Prior art keywords
- alumina
- dispersion agent
- powder
- product
- fine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a method for producing ultramicro fine alumina powder, which uses gamma-alumina or alpha-alumina as a base material, and 0% to 5% of a mineralizing agent and 0.1% to 10% of dispersing agent are prepared and used as adjuvant materials according to the weight of the base material; or the gamma-alumina and the mineralizing agent are blended evenly, calcined conventionally and then added with a dispersing agent; or the gamma-alumina and the dispersing agent are evenly blended directly; or the alpha-alumina and the dispersing agent are blended evenly; then the evenly blended materials are processed through fine grinding firstly and through superfine grinding into powder with granularity d50 which does not exceed 1.5 mu m; a finished product is manufactured. The present invention has the characteristics of compact production equipment, short construction period, short technological process, small investment and low production cost, and can be used for the production of ultramicro fine alumina powder.
Description
Technical field
The present invention relates to a kind of preparation method of alumina powder, particularly a kind of preparation method of super fine alumina powder.
Technical background
In alumina powder, ultramicro powder is meant the micro mist about diameter 1 μ m, has wide application field.Thin more its sintering temperature of aluminum oxide grain size is also low more.Therefore, super fine alumina has good sintering character and use properties.Simultaneously also be the good disperse phase of preparation dispersion strengthened material.The super fine alumina powder now has been widely used in aspects such as light transmitant aluminium oxide sintered compact, fluor carrier, additive, monocrystal material, high-pressure mercury lamp, physics and chemistry instrument, artificial bone, semiconductor material substrate, mrt stopping composition, ruby laser material, abrasive substance.The preparation method of super fine alumina powder is a lot, and methods such as gaseous state method of evaporation, plasma method, metal alkoxide method are arranged.These method technical process are long, and the construction period is long, and investment is big, and the production cost height is difficult for industrialization promotion.
Summary of the invention
The objective of the invention is to, a kind of method of new production super fine alumina powder is provided, adopt this method to produce, have less investment, the characteristics that production cost is low.
The present invention realizes like this.A kind of method of producing the super fine alumina powder; It is characterized in that, undertaken by following step;
A, batching: with gama-alumina or Alpha-alumina is base-material, by base-material weight be on the waiting list 0～5% mineralizer, 0.1～10% organic dispersing agent is an auxiliary material, is added with the lanthanum trioxide or the cerium oxide of dispersion agent weight 0.1～10% in the dispersion agent in addition;
B, goods:, after conventional roasting, add dispersion agent and get the B product again with gama-alumina and mineralizer mixing; Or the B product will be got behind gama-alumina and the direct mixing of dispersion agent; Or the B product will be got behind Alpha-alumina and the dispersion agent mixing;
C, grinding: the B product are carried out fine grainding earlier, become granularity d through super-fine-ground again
50Be no more than the powder of 1.5 μ m, get finished product.
Compared with the prior art, the present invention utilizes suitable dispersion agent to adopt polishing to produce the super fine alumina powder.The present invention has used production unit compactness, and the cycle of founding the factory is short, and technical process is short, invest little, the characteristics that production cost is low.Can be used in the production of super fine alumina powder.
Embodiment
Embodiment 1.
A, batching: with the gama-alumina is base-material, is on the waiting list 3% mineralizer by base-material weight, and 3% dispersion agent (for example acrylic acid sodium etc.) is an auxiliary material; Mineralizer does not have particular requirement, and mineralizer is mainly used in the reduction maturing temperature, also can, common mineralizer gets final product; Be added with the rare earth compound (for example lanthanum trioxide, cerium oxide etc.) of dispersion agent weight 0.5% in the dispersion agent in addition.
B, goods:, after conventional roasting, add dispersion agent and get the B product again with gama-alumina and mineralizer mixing.
C, grinding: the B product are carried out fine grainding earlier, become granularity d through super-fine-ground again
50Be no more than the powder of 1.5 μ m, get Alpha-alumina ultramicro powder finished product.
Embodiment 2.
A, batching: with the Alpha-alumina is base-material, and being on the waiting list 5% dispersion agent by base-material weight is auxiliary material; Be added with the rare earth compound of dispersion agent weight 4% in the dispersion agent in addition; The A product will be got behind Alpha-alumina and the dispersion agent mixing;
B, grinding: the A product are carried out fine grainding earlier, become granularity d through super-fine-ground again
50Be no more than the powder of 1.5 μ m, get Alpha-alumina ultramicro powder finished product.
Embodiment 3.A kind of method of producing fine aluminum oxide powder; It is characterized in that, undertaken by following step;
A, batching: with the gama-alumina is base-material, and being on the waiting list 6% dispersion agent by base-material weight is auxiliary material; Be added with the rare earth compound of dispersion agent weight 8% in the dispersion agent in addition; The A product will be got behind gama-alumina and the dispersion agent mixing;
B, grinding: the A product are carried out fine grainding earlier, become granularity d through super-fine-ground again
50Be no more than the powder of 1.5 μ m, get gama-alumina ultramicro powder finished product.
Claims (1)
1, a kind of method of producing the super fine alumina powder; It is characterized in that, undertaken by following step;
A, batching: with gama-alumina or Alpha-alumina is base-material, by base-material weight be on the waiting list 0～5% mineralizer, 0.1～10% organic dispersing agent is an auxiliary material, is added with the lanthanum trioxide or the cerium oxide of dispersion agent weight 0.1～10% in the dispersion agent in addition;
B, goods:, after conventional roasting, add dispersion agent and get the B product again with gama-alumina and mineralizer mixing; Or the B product will be got behind gama-alumina and the direct mixing of dispersion agent; Or the B product will be got behind Alpha-alumina and the dispersion agent mixing;
C, grinding: the B product are carried out fine grainding earlier, become granularity d through super-fine-ground again
50Be no more than the powder of 1.5 μ m, get finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117890 CN1218874C (en) | 2003-05-16 | 2003-05-16 | Method Fr manufacturing ultramicro alumina powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117890 CN1218874C (en) | 2003-05-16 | 2003-05-16 | Method Fr manufacturing ultramicro alumina powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519198A CN1519198A (en) | 2004-08-11 |
| CN1218874C true CN1218874C (en) | 2005-09-14 |
Family
ID=34284789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03117890 Expired - Fee Related CN1218874C (en) | 2003-05-16 | 2003-05-16 | Method Fr manufacturing ultramicro alumina powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218874C (en) |
-
2003
- 2003-05-16 CN CN 03117890 patent/CN1218874C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1519198A (en) | 2004-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kang et al. | YAG: Ce phosphor particles prepared by ultrasonic spray pyrolysis | |
| EP1036130B1 (en) | Method of preparing high brightness, shorter persistence zinc orthosilicate phosphor | |
| EP2474590B1 (en) | Phosphor particles and making method | |
| CN1482208A (en) | Blue light-excitated white phosphor powder for LED and production method thereof | |
| EP3553041B1 (en) | Preparation method for ceramic composite material, ceramic composite material, and wavelength converter | |
| Rai et al. | Synthesis, growth mechanism and photoluminescence of monodispersed cubic shape Ce doped YAG nanophosphor | |
| CN1803974A (en) | Method for preparing oxide core shell structured spherical luminescent material | |
| KR20000074761A (en) | A preparing method for green fluorescent body based orthosilicate | |
| CN1442259A (en) | Nano-rare earth tungsten powder and its preparation method | |
| CN111019648A (en) | Molten salt method preparation method of oxysalt or oxynitride fluorescent powder | |
| CN1289432C (en) | Method for preparing proppant in high intensity | |
| CN1900216A (en) | Process for preparing rare-earth excited strontium aluminate long afterglow fluorescent powder | |
| Kang et al. | Ba2+ Co-doped Zn2SiO4: Mn phosphor particles prepared by spray pyrolysis process | |
| CN1218874C (en) | Method Fr manufacturing ultramicro alumina powder | |
| CN103468263B (en) | Blue-light excited narrow size distribution fluorescent powder for white LEDs and manufacturing method thereof | |
| KR101302417B1 (en) | Preparation method of green-emitting phosphor using mesoporous silica, and the green-emitting phosphor thereby | |
| Lei et al. | Influences of sol-gel progress on luminescent properties of Li1. 0Nb0. 6Ti0. 5O3: Eu3+ red phosphor | |
| CN108863362A (en) | A kind of nanometer microwave medium ceramic material and preparation method thereof | |
| Fu et al. | La2Sn2O7: Eu3+ micronanospheres: hydrothermal synthesis and luminescent properties | |
| Roh et al. | Morphological control of Zn2SiO4: Mn phosphor particles by adding citric acid in spray pyrolysis process | |
| CN1123621C (en) | Process for preparing aluminate-base fluorescent powder | |
| CN113213523A (en) | Nano cerium oxide powder with high cutting efficiency and preparation method thereof | |
| US7125539B2 (en) | Ground calcined alumina for input in a precursor composition for refractory material and method for obtaining same | |
| CN1273384C (en) | Preparation of nano aluminum oxide without hard coacervation | |
| CN109133878B (en) | Composite ceramic and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20120516 |