GB571276A - Improvements in or relating to the manufacture of magnesium hydroxide - Google Patents
Improvements in or relating to the manufacture of magnesium hydroxideInfo
- Publication number
- GB571276A GB571276A GB431943A GB431943A GB571276A GB 571276 A GB571276 A GB 571276A GB 431943 A GB431943 A GB 431943A GB 431943 A GB431943 A GB 431943A GB 571276 A GB571276 A GB 571276A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydroxide
- solution
- magnesium
- aqueous
- magnesium hydroxide
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
571,276. Magnesium hydroxide, CLARK, L. M., ROBINSON, J. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 17, 1943, No. 4319. [Classes 1 (iii) and 32] Magnesium hydroxide is obtained in coarse crystals and crystal aggregates, e.g., exceeding 30 microns in diameter, by the reaction of an aqueous solution of a magnesium salt with an aqueous suspension or solution of a hydroxide in the presence of a vigorously agitated aqueous suspension of magnesium hydroxide crystals the weight of which is at least 20 times and preferably between 30 and 100 times the weight of magnesium hydroxide precipitated per hour, the volume of the reaction zone and the rates of feed and outflow being so adjusted that the average agitation time of the reaction mixture is not less than half an hour and preferably between 1 and 10 hours. Advantageously the solution of a magnesium salt and the solution or suspension of a hydroxide are added continuously to different points of the vigorously stirred suspension of magnesium hydroxide. The aqueous suspension or solution of the hydroxide and/or the aqueous .solution of magnesium salt may each conveniently contain 0.2-5.0 per cent. by weight of reactant. Sea-water, from which all the calcium bicarbonate has been precipitated may be used as the aqueous solution of the magnesium salt. Examples relate to the reaction of: (1) magnesium chloride with sodium hydroxide; (2) sea-water, freed from bicarbonates, with milk of lime. Specification 482,339 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB431943A GB571276A (en) | 1943-03-17 | 1943-03-17 | Improvements in or relating to the manufacture of magnesium hydroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB431943A GB571276A (en) | 1943-03-17 | 1943-03-17 | Improvements in or relating to the manufacture of magnesium hydroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB571276A true GB571276A (en) | 1945-08-17 |
Family
ID=9774933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB431943A Expired GB571276A (en) | 1943-03-17 | 1943-03-17 | Improvements in or relating to the manufacture of magnesium hydroxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB571276A (en) |
-
1943
- 1943-03-17 GB GB431943A patent/GB571276A/en not_active Expired
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