发明名称 |
PRODUCTION OF SODIUM FLUORIDE AND SILICA |
摘要 |
Process for the production of sodium fluoride and silica by a reaction of sodium silicofluoride and sodium hydroxide at an elevated temperature. Advantageously solid silicofluoride is added to a solution of the hydroxide, in a quantity of about 85 % of the stoichiometric ratio resulting in a precipitate of sodium fluoride followed by addition of the second part of the silicofluoride, precipitating further sodium fluoride and also silica.
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申请公布号 |
WO9719893(A1) |
申请公布日期 |
1997.06.05 |
申请号 |
WO1996IL00155 |
申请日期 |
1996.11.19 |
申请人 |
HAREL, SIMCHA;HAVKIN, YOAV |
发明人 |
HAREL, SIMCHA;HAVKIN, YOAV |
分类号 |
C01B33/12;C01D3/02;C01F11/22;(IPC1-7):C01B33/12 |
主分类号 |
C01B33/12 |
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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