发明名称 |
PRODUCTION OF PURE MAGNESIUM CHLORIDE SOLUTION FROM SILICEOUS MAGNESIUMMINERALS |
摘要 |
A process for the production of pure magnesium chloride liquor from siliceous magnesium minerals comprises the steps of leaching the siliceous magnesium mineral with a hydrochloric acid solution at a temperature higher than 50.degree.C but below the boiling point and in such a manner as to maintain the pH of the slurry below 1.5 to prevent the formation of silica gel, reacting such slurry with a reactive magnesia in order to raise the pH to 4.0-7.0 to precipitate substantially all the impurities from solution while preventing silica gel formation, and performing a solid/liquid separation of the slurry on suitable filtration equipment to obtain pure magnesium chloride liquor. |
申请公布号 |
CA1303327(C) |
申请公布日期 |
1992.06.16 |
申请号 |
CA19880585034 |
申请日期 |
1988.12.05 |
申请人 |
NORANDA INC. |
发明人 |
HARRIS, G. BRYN;PEACEY, JOHN G. |
分类号 |
C01F;C01F5/30;C22B3/00;C22B26/22 |
主分类号 |
C01F |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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