GB648315A - Process of producing magnesium oxide and products resulting therefrom - Google Patents
Process of producing magnesium oxide and products resulting therefromInfo
- Publication number
- GB648315A GB648315A GB21386/47A GB2138647A GB648315A GB 648315 A GB648315 A GB 648315A GB 21386/47 A GB21386/47 A GB 21386/47A GB 2138647 A GB2138647 A GB 2138647A GB 648315 A GB648315 A GB 648315A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dolomite
- particles
- sea water
- tank
- mesh
- 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
- C01F5/22—Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides
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
Sea water and other solutions containing recoverable magnesium salts are treated with dry calcined dolomite particles, the major proportion by weight of said particles being of a size such that they will sink through the solution and any unreactive particles will settle quickly to the bottom, the precipitate of magnesium hydroxide is washed and filtered, and the resulting paste is calcined, e.g. at 1400 DEG C., to yield the oxide. Thus, the calcined dolomite may have a particle size within the range minus 65 to plus 100 mesh per linear inch, or varying from approximately 100 mesh to a coarse granular state and obtained from dolomite of 1/2 inch mesh prior to calcination, which may be effected at about 1200 DEG C. An apparatus is shown consisting of four shallow conicalbottomed tanks provided with rotating rakes. The dry calcined dolomite, suitably at 600 DEG C., is fed to the first tank containing sea water which has been pretreated with slaked lime or slaked dolomite to remove carbon dioxide and bicarbonates. Ferric chloride, chlorine and hypochlorites may also have been added. Impurities &c. settle to, and are removed from, the bottom of the tank, and the precipitated magnesium hydroxide and sea water overflow to the second (or thickener) tank, from which the settled precipitate passes in succession through two wash tanks, and thence to a filter, and a calciner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US648315XA | 1942-07-15 | 1942-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB648315A true GB648315A (en) | 1951-01-03 |
Family
ID=22058513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21386/47A Expired GB648315A (en) | 1942-07-15 | 1947-08-06 | Process of producing magnesium oxide and products resulting therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB648315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255590A (en) * | 2019-08-02 | 2019-09-20 | 辽宁星空新能源发展有限公司 | A kind of method that rapid precipitation prepares magnesium hydroxide two-dimensional nano piece |
-
1947
- 1947-08-06 GB GB21386/47A patent/GB648315A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255590A (en) * | 2019-08-02 | 2019-09-20 | 辽宁星空新能源发展有限公司 | A kind of method that rapid precipitation prepares magnesium hydroxide two-dimensional nano piece |
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