GB625649A - Improved process of producing magnesium sulphate - Google Patents
Improved process of producing magnesium sulphateInfo
- Publication number
- GB625649A GB625649A GB1544844A GB1544844A GB625649A GB 625649 A GB625649 A GB 625649A GB 1544844 A GB1544844 A GB 1544844A GB 1544844 A GB1544844 A GB 1544844A GB 625649 A GB625649 A GB 625649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- magnesium oxide
- solution
- magnesium
- oxidation
- 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 sulphate is produced by treating calcined magnesium oxide-containing materials with sulphurous acid containing sulphur trioxide to form a solution of normal magnesium sulphite and sulphate, oxidizing by a gaseous oxidizing agent to the sulphate, and crystallizing. Suitable magnesium oxide - containing materials are serpentine, magnesite and brucite. The sulphur dioxide employed may be obtained by roasting pyritic material, enough being used to dissolve all metals and a small amount of the silica present. Oxidation may be effected by the passage of, or spraying the solution into, air or ozonized air. Manganous sulphate may be present as a catalyst. Oxidation may be completed by ozone, chlorine or a hypochlorite. Iron sulphate may be removed as hydroxide from the oxidized solution by the addition of magnesium oxide or original calcine. Silica and calcium sulphate may be removed by concentration and filtration. The insoluble matter after treatment with sulphurous acid need not be removed until after precipitation of the ferric hydroxide. Specifications 597,028, 603,779 and U.S.A. Specification 1,865,224 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1544844A GB625649A (en) | 1944-08-14 | 1944-08-14 | Improved process of producing magnesium sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1544844A GB625649A (en) | 1944-08-14 | 1944-08-14 | Improved process of producing magnesium sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625649A true GB625649A (en) | 1949-07-01 |
Family
ID=10059318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1544844A Expired GB625649A (en) | 1944-08-14 | 1944-08-14 | Improved process of producing magnesium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB625649A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637347A (en) * | 1969-07-31 | 1972-01-25 | Combustion Eng | Air pollution control system with chemical recovery |
| CN115818680A (en) * | 2023-02-21 | 2023-03-21 | 山东天润资源综合利用有限公司 | Treatment method of magnesium-process desulfurization sludge |
-
1944
- 1944-08-14 GB GB1544844A patent/GB625649A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637347A (en) * | 1969-07-31 | 1972-01-25 | Combustion Eng | Air pollution control system with chemical recovery |
| CN115818680A (en) * | 2023-02-21 | 2023-03-21 | 山东天润资源综合利用有限公司 | Treatment method of magnesium-process desulfurization sludge |
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