发明名称 |
PRODUCTION OF PURE MGC12 SOLUTION SUITABLE FOR THE PRODUCTION OF MAGNESIUM METAL FROM AN IMPURE MAGNESITE ORE OR CONCENTRATE |
摘要 |
A process for producing a substantially pure, concentrated MgCl2 solution suitable for subsequent molten salt electrolysis to magnesium metal from an impure magnesite ore or concentrate is disclosed. The process comprises the steps of calcining a magnesite ore or concentrate at a temperature greater than 600.degree.C to decompose most of the magnesite and form a reactive magnesia, dissolving such reactive magnesia with either concentrated hydrochloric acid or hydrogen chloride gas with the addition of a surface active wetting agent to produce an impure concentrated MgCl2 solution, and reacting such impure concentrated MgCl2 solution with a minimum of excess magnesia to increase the pH of the solution to at least 5.5 to precipitate undesirable impurities from solution and produce a substantially pure MgCl2 solution. |
申请公布号 |
CA1279976(C) |
申请公布日期 |
1991.02.12 |
申请号 |
CA19860510355 |
申请日期 |
1986.05.29 |
申请人 |
PAMOUR PORCUPINE MINES, LIMITED |
发明人 |
HARRIS, BRYN G.;PEACEY, JOHN G.;MONETTE, SERGE |
分类号 |
C01F5/30;C22B26/22;C25B1/00 |
主分类号 |
C01F5/30 |
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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