FR2036842A1 - Aluminium oxide low in sodium oxide, prodn - Google Patents
Aluminium oxide low in sodium oxide, prodnInfo
- Publication number
- FR2036842A1 FR2036842A1 FR6910914A FR6910914A FR2036842A1 FR 2036842 A1 FR2036842 A1 FR 2036842A1 FR 6910914 A FR6910914 A FR 6910914A FR 6910914 A FR6910914 A FR 6910914A FR 2036842 A1 FR2036842 A1 FR 2036842A1
- Authority
- FR
- France
- Prior art keywords
- prodn
- oxide
- low
- sodium
- aluminium oxide
- 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.)
- Withdrawn
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 title abstract 2
- 229910001948 sodium oxide Inorganic materials 0.000 title abstract 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 abstract 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 2
- 239000004327 boric acid Substances 0.000 abstract 2
- 229910001679 gibbsite Inorganic materials 0.000 abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
- C01F7/442—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination in presence of a calcination additive
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
Aluminium oxide, low in sodium oxide, prodn. Process comprises calcination of Al(OH)3 with the addn. of boric acid just prior to total conversion into alpha-Al2O3, specif. the Al(OH)3 and the boric acid are introduced into a tubular, rotary oven, then 0.5-2.0% of NH4Cl is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6910914A FR2036842A1 (en) | 1969-04-09 | 1969-04-09 | Aluminium oxide low in sodium oxide, prodn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6910914A FR2036842A1 (en) | 1969-04-09 | 1969-04-09 | Aluminium oxide low in sodium oxide, prodn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2036842A1 true FR2036842A1 (en) | 1970-12-31 |
Family
ID=9032118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR6910914A Withdrawn FR2036842A1 (en) | 1969-04-09 | 1969-04-09 | Aluminium oxide low in sodium oxide, prodn |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2036842A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2441584A1 (en) * | 1978-11-18 | 1980-06-13 | Giulini Chemie | PLATELET ALUMINUM OXIDE MACROCRYSTALS AND PROCESS FOR OBTAINING |
| EP0105025A1 (en) * | 1982-08-24 | 1984-04-04 | Schweizerische Aluminium Ag | Process for the preparation of crystalline aluminium oxide |
-
1969
- 1969-04-09 FR FR6910914A patent/FR2036842A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2441584A1 (en) * | 1978-11-18 | 1980-06-13 | Giulini Chemie | PLATELET ALUMINUM OXIDE MACROCRYSTALS AND PROCESS FOR OBTAINING |
| EP0105025A1 (en) * | 1982-08-24 | 1984-04-04 | Schweizerische Aluminium Ag | Process for the preparation of crystalline aluminium oxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |