GB403860A - Improved processes for making magnesium hydroxide - Google Patents
Improved processes for making magnesium hydroxideInfo
- Publication number
- GB403860A GB403860A GB12901/33A GB1290133A GB403860A GB 403860 A GB403860 A GB 403860A GB 12901/33 A GB12901/33 A GB 12901/33A GB 1290133 A GB1290133 A GB 1290133A GB 403860 A GB403860 A GB 403860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- hydroxide
- solution
- magnesium hydroxide
- treating
- 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
- C01F5/14—Magnesium hydroxide
- C01F5/20—Magnesium hydroxide by precipitation from solutions of magnesium salts with ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Magnesium hydroxide is obtained in readily filterable condition and in good yield by treating a solution of a magnesium salt such as the sulphate or chloride with a large excess of ammonia, say three times the quantity theoretically necessary, which is preferably added in the gaseous form. Excess ammonia is recovered from the mother liquor, which may then be concentrated to obtain the ammonium salt remaining in solution. A light form of hydroxide may be obtained by treating a solution containing at least 8 per cent of MgS04 with ammonia gas in an amount say 3.23 times that theoretically necessary; whilst a heavier, crystalline form may be produced by adding a solution containing 16 per cent of Mg S04 gradually and with agitation to an equal volume of water, whilst slowly introducing ammonia gas in an amount double the theoretical quantity, a further quantity of ammonia being then added more quickly. The heavy form of hydroxide may be used in the preparation of fertilisers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US403860XA | 1932-05-24 | 1932-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403860A true GB403860A (en) | 1934-01-04 |
Family
ID=21910699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12901/33A Expired GB403860A (en) | 1932-05-24 | 1933-05-03 | Improved processes for making magnesium hydroxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB403860A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908014C (en) * | 1949-10-15 | 1954-04-01 | Dr Hellmuth Keitel | Process for the production of easily filterable magnesia and ammonium-magnesium double salt |
| DE965227C (en) * | 1950-02-23 | 1957-06-06 | Wintershall Ag | Process for the production of easily filterable magnesia and ammonium-magnesium double salt |
| US2977186A (en) * | 1957-03-12 | 1961-03-28 | Soc Etu Chimiques Ind Et Agri | Separation of potassium and/or magnesium ions from double salts containing potassium and magnesium |
| US4695445A (en) * | 1985-08-14 | 1987-09-22 | Asahi Glass Company Ltd. | Magnesium hydroxide and process for its production |
| US4698379A (en) * | 1985-01-19 | 1987-10-06 | Asahi Glass Company Ltd. | Magnesium hydroxide, process for its production and resin composition containing it |
| CN114956133A (en) * | 2022-05-27 | 2022-08-30 | 华东理工大学 | Method for preparing magnesium hydroxide by extracting potassium, old bittern, magnesium chloride and ammonia gas |
-
1933
- 1933-05-03 GB GB12901/33A patent/GB403860A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908014C (en) * | 1949-10-15 | 1954-04-01 | Dr Hellmuth Keitel | Process for the production of easily filterable magnesia and ammonium-magnesium double salt |
| DE965227C (en) * | 1950-02-23 | 1957-06-06 | Wintershall Ag | Process for the production of easily filterable magnesia and ammonium-magnesium double salt |
| US2977186A (en) * | 1957-03-12 | 1961-03-28 | Soc Etu Chimiques Ind Et Agri | Separation of potassium and/or magnesium ions from double salts containing potassium and magnesium |
| US4698379A (en) * | 1985-01-19 | 1987-10-06 | Asahi Glass Company Ltd. | Magnesium hydroxide, process for its production and resin composition containing it |
| US4695445A (en) * | 1985-08-14 | 1987-09-22 | Asahi Glass Company Ltd. | Magnesium hydroxide and process for its production |
| CN114956133A (en) * | 2022-05-27 | 2022-08-30 | 华东理工大学 | Method for preparing magnesium hydroxide by extracting potassium, old bittern, magnesium chloride and ammonia gas |
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