JPS56164013A - Preparation of alumina with low content of radioactive element - Google Patents
Preparation of alumina with low content of radioactive elementInfo
- Publication number
- JPS56164013A JPS56164013A JP6791080A JP6791080A JPS56164013A JP S56164013 A JPS56164013 A JP S56164013A JP 6791080 A JP6791080 A JP 6791080A JP 6791080 A JP6791080 A JP 6791080A JP S56164013 A JPS56164013 A JP S56164013A
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- mineral acid
- acid
- solution
- preparation
- 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.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 6
- 230000002285 radioactive effect Effects 0.000 title 1
- 239000002253 acid Substances 0.000 abstract 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 6
- 239000011707 mineral Substances 0.000 abstract 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To obtain alumina suitable for using in a semiconductor memory apparatus, by pulverizing a calcined alumina consisting of substantially an α-crystal, and washing the pulverized crystal with a dilute mineral acid solution.
CONSTITUTION: Calcined α-alumina must be finely pulverized in order to elute uranium and thorium in a solution of a mineral acid, e.g. nitric acid, by the treatment with the mineral acid solution. After the treatment, the alumina is separated from the mineral acid solution by the solid-liquid separation. The nitric acid is most effective as the mineral acid, and followed by sulfuric acid. Hydrochloric acid has a little effect. The concentration of the mineral acid is preferably about 0.5W0.1N. The resultant separated alumina is then washed fully with water and dried.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6791080A JPS56164013A (en) | 1980-05-23 | 1980-05-23 | Preparation of alumina with low content of radioactive element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6791080A JPS56164013A (en) | 1980-05-23 | 1980-05-23 | Preparation of alumina with low content of radioactive element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56164013A true JPS56164013A (en) | 1981-12-16 |
Family
ID=13358526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6791080A Pending JPS56164013A (en) | 1980-05-23 | 1980-05-23 | Preparation of alumina with low content of radioactive element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56164013A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05294613A (en) * | 1991-11-28 | 1993-11-09 | Showa Denko Kk | Spherical corundum particle |
| US6368998B1 (en) | 1998-09-14 | 2002-04-09 | Shell Oil Company | Process for preparing catalyst with improved catalytic properties |
| US7232918B2 (en) | 2001-11-06 | 2007-06-19 | Shell Oil Company | Catalyst composition |
| US7232786B2 (en) | 1998-09-14 | 2007-06-19 | Shell Oil Company | Catalyst composition |
| US7247600B2 (en) | 1998-09-14 | 2007-07-24 | Shell Oil Company | Catalyst composition |
| US7504525B2 (en) | 1998-09-14 | 2009-03-17 | Shell Oil Company | Catalyst composition |
| US7538235B2 (en) | 2004-04-01 | 2009-05-26 | Shell Oil Company | Process for preparing a catalyst, the catalyst, and a use of the catalyst |
| JP2021172546A (en) * | 2020-04-22 | 2021-11-01 | 株式会社アドマテックス | Method for manufacturing spherical particle material |
| CN115947361A (en) * | 2022-11-21 | 2023-04-11 | 江苏联瑞新材料股份有限公司 | Low-radioactivity alumina powder and preparation method thereof |
-
1980
- 1980-05-23 JP JP6791080A patent/JPS56164013A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05294613A (en) * | 1991-11-28 | 1993-11-09 | Showa Denko Kk | Spherical corundum particle |
| US6368998B1 (en) | 1998-09-14 | 2002-04-09 | Shell Oil Company | Process for preparing catalyst with improved catalytic properties |
| US7232786B2 (en) | 1998-09-14 | 2007-06-19 | Shell Oil Company | Catalyst composition |
| US7247600B2 (en) | 1998-09-14 | 2007-07-24 | Shell Oil Company | Catalyst composition |
| US7439375B2 (en) | 1998-09-14 | 2008-10-21 | Shell Oil Company | Catalyst composition |
| US7504525B2 (en) | 1998-09-14 | 2009-03-17 | Shell Oil Company | Catalyst composition |
| US7507689B2 (en) | 1998-09-14 | 2009-03-24 | Shell Oil Company | Catalyst composition |
| US7741499B2 (en) | 1998-09-14 | 2010-06-22 | Shell Oil Company | Catalyst composition |
| US7232918B2 (en) | 2001-11-06 | 2007-06-19 | Shell Oil Company | Catalyst composition |
| US7538235B2 (en) | 2004-04-01 | 2009-05-26 | Shell Oil Company | Process for preparing a catalyst, the catalyst, and a use of the catalyst |
| JP2021172546A (en) * | 2020-04-22 | 2021-11-01 | 株式会社アドマテックス | Method for manufacturing spherical particle material |
| CN115947361A (en) * | 2022-11-21 | 2023-04-11 | 江苏联瑞新材料股份有限公司 | Low-radioactivity alumina powder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS56164013A (en) | Preparation of alumina with low content of radioactive element | |
| NO154164C (en) | PROCEDURE FOR THE PREPARATION OF PURE ALUMINUM OXYDE BY SALTS HOURS CONSUMPTION OF ALUMINUM-containing ores and extraction of impurities by means of sulfuric acid treatment. | |
| JPS56155017A (en) | Preparation of alumina having extremely low content of radioactive element | |
| JPS52124470A (en) | Removal of acidic gas | |
| JPS51130800A (en) | Treatment method by exchange,adsorption,separation,enrichment of cesiu m-137 from radio-active waste liquid | |
| JPS5476595A (en) | Method of separation and recovery of triethylenediamine | |
| JPS573715A (en) | Preparation of alumina having extremely low content of radioactive element | |
| JPS5251161A (en) | Oscillation-type separating device for grains depending upon their spe cific gravities | |
| JPS52104504A (en) | Process for recovering oil from oil sludge | |
| JPS5323926A (en) | Recovery of trifluoromethanesulfonic acid | |
| JPS52147355A (en) | Direct fired absorption type high temperature | |
| JPS5749630A (en) | Recovering method of vinyl chloride resin | |
| JPS5259081A (en) | Method of purifying liquid crystal | |
| JPS5299285A (en) | Cell culturing device | |
| JPS51111380A (en) | Treatment method for build-in reactor vessel of analyzer | |
| JPS53114569A (en) | Apparatus for separating and dehydrating scale | |
| JPS5242473A (en) | Solid-liquid separation method of solutions containing suspended parti cles | |
| JPS51146700A (en) | Processing method of na contained radioactive waste liquid | |
| JPS54118998A (en) | Processing method of radioactive material contained liquid | |
| JPS56139428A (en) | Preparation of isobutylene low polymer | |
| JPS57142930A (en) | Recovering method of ethylene glycol | |
| Horio et al. | Continuous Prehydrolysis in Sulfate Process for Preparation of Dissolving Pulp | |
| JPS51138603A (en) | Process for preparing n-ac etyle-dl-amino acids | |
| JPS5312150A (en) | Apparatus for treating drain water | |
| JPS5238675A (en) | Filtering device of the type of filtering material circulation |