| 发明名称 |
PROCESS FOR THE TREATMENT OF A SILICATE MINERAL |
| 摘要 |
A process for the treatment of a silicate mineral, includes: preparing a first composition including an alkali metal magnesium orthosilicate and optionally either (i) magnesium oxide or (ii) an alkali metal silicate, by reaction, at a temperature from 500 to 1200° C., of an alkali metal carbonate compound, which compound is an alkali metal carbonate, an alkali metal bicarbonate or a mixture thereof, with a magnesium silicate, the molar ratio of alkali metal carbonate compound, expressed as alkali metal oxide of the formula R2O, in which R represents an alkali metal, to magnesium silicate, expressed as silicon dioxide, of the formula SiO2, being from 4:1 to 1:4, and contacting the first composition with water to produce a second composition comprising an amorphous magnesium silicate hydrate (M—S—H). |
| 申请公布号 |
US2015299823(A1) |
申请公布日期 |
2015.10.22 |
| 申请号 |
US201314647277 |
申请日期 |
2013.11.26 |
| 申请人 |
LAFARGE |
发明人 |
PISCH Alexander;GARTNER Ellis;MEYER Vincent |
| 分类号 |
C22B26/22;C01F5/24;C22B1/00;B01J20/10;B01J20/30 |
主分类号 |
C22B26/22 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for the treatment of a silicate mineral, said process comprising the-steps-of:
preparing a first composition comprising an alkali metal magnesium orthosilicate and optionally either (i) magnesium oxide or (ii) an alkali metal silicate, by reaction, at a temperature from 500 to 1200° C., of an alkali metal carbonate compound, which compound is an alkali metal carbonate, an alkali metal bicarbonate or a mixture thereof, with a magnesium silicate, the molar ratio of alkali metal carbonate compound, expressed as alkali metal oxide of the formula R2O, in which R represents an alkali metal, to magnesium silicate, expressed as silicon dioxide, of the formula SiO2, being from 4:1 to 1:4, and contacting the first composition with water to produce a second composition comprising an amorphous magnesium silicate hydrate (M—S—H). |
| 地址 |
Paris FR |
