JPS557532A - Production of high purity alumina fine powder - Google Patents
Production of high purity alumina fine powderInfo
- Publication number
- JPS557532A JPS557532A JP7857878A JP7857878A JPS557532A JP S557532 A JPS557532 A JP S557532A JP 7857878 A JP7857878 A JP 7857878A JP 7857878 A JP7857878 A JP 7857878A JP S557532 A JPS557532 A JP S557532A
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- granules
- fine powder
- high purity
- alumina 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.)
- Granted
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To economically produce high purity alumina fine powder with high chemical stability by scattering molten alumina; solidifying the scattered alumina by quenching; acid-treating the resulting hollow granules to remove impurities; and finely pulverizing the granules.
CONSTITUTION: Molten alumina such as Bayer alumina is scattered by spraying compressed air and solidified by quenching to form thin porous hollow corundum crystal granules of low strength and about 0.1W7 mm diameter. The granules are then dipped in a mineral acid soln. such as sulfuric acid to elution-remove impurities, washed with clear water, heat-dried, and finely pulverized to obtain high purity alumina fine powder.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7857878A JPS557532A (en) | 1978-06-30 | 1978-06-30 | Production of high purity alumina fine powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7857878A JPS557532A (en) | 1978-06-30 | 1978-06-30 | Production of high purity alumina fine powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS557532A true JPS557532A (en) | 1980-01-19 |
JPS5760290B2 JPS5760290B2 (en) | 1982-12-18 |
Family
ID=13665777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7857878A Granted JPS557532A (en) | 1978-06-30 | 1978-06-30 | Production of high purity alumina fine powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS557532A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8124048B2 (en) | 2006-12-15 | 2012-02-28 | Nippon Light Metal Company, Ltd. | Process for producing high-purity α-alumina |
-
1978
- 1978-06-30 JP JP7857878A patent/JPS557532A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8124048B2 (en) | 2006-12-15 | 2012-02-28 | Nippon Light Metal Company, Ltd. | Process for producing high-purity α-alumina |
Also Published As
Publication number | Publication date |
---|---|
JPS5760290B2 (en) | 1982-12-18 |
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