GB497119A - A process for obtaining magnesia with hydrochloric acid and an alkali sulphate - Google Patents
A process for obtaining magnesia with hydrochloric acid and an alkali sulphateInfo
- Publication number
- GB497119A GB497119A GB403938A GB403938A GB497119A GB 497119 A GB497119 A GB 497119A GB 403938 A GB403938 A GB 403938A GB 403938 A GB403938 A GB 403938A GB 497119 A GB497119 A GB 497119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrochloric acid
- sulphate
- alkali
- steam
- mixture
- 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
Links
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
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
- C01F5/12—Magnesia by thermal decomposition of magnesium compounds by thermal decomposition of magnesium sulfate, with or without reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Magnesium oxide suitable for removal of oxides of sulphur from waste gases from fuel furnaces is obtained by heating a mixture of magnesium sulphate and an alkali metal chloride in the presence of steam to a temperature of 600-700 DEG C., and treating the residue with water to dissolve the alkali sulphate formed. The hydrochloric acid evolved is cooled and recovered as a concentrated solution. Two mols. of alkali metal chloride are used per mol. of magnesium sulphate, and the latter is partly or wholly dehydrated before the mixture is treated with steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB403938A GB497119A (en) | 1938-02-09 | 1938-02-09 | A process for obtaining magnesia with hydrochloric acid and an alkali sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB403938A GB497119A (en) | 1938-02-09 | 1938-02-09 | A process for obtaining magnesia with hydrochloric acid and an alkali sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497119A true GB497119A (en) | 1938-12-13 |
Family
ID=9769577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB403938A Expired GB497119A (en) | 1938-02-09 | 1938-02-09 | A process for obtaining magnesia with hydrochloric acid and an alkali sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711599A (en) * | 1970-04-13 | 1973-01-16 | Dow Chemical Co | Method of preparing fibrous magnesium oxide |
-
1938
- 1938-02-09 GB GB403938A patent/GB497119A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711599A (en) * | 1970-04-13 | 1973-01-16 | Dow Chemical Co | Method of preparing fibrous magnesium oxide |
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