发明名称 |
LIME TREATMENT |
摘要 |
Methods of obtaining a solution of calcium ions from lime (e.g. carbide lime ) are disclosed. In one aspect the method comprises (i) treating the lime with an aqueous solution of a polyhydroxy compound (preferably sorbitol) having three or more hydroxy groups and a straight chain of 3 to 8 carbon atoms; an d (ii) optionally separating insoluble impurities from the solution resulting from (i). In another aspect the method comprises (iii) treating carbide lime with an aqueous solution of a polyhydroxy compound (e.g. sorbitol or sucrose ) to extract calcium from the carbide lime; and (iv) separating insoluble impurities from the solution resulting from (i). The solutions obtained may be treated with precipitating agent to obtain a solid calcium containing produc t. The product may be calcium carbonate obtained by treating the solution with carbon dioxide as the precipitating agent.
|
申请公布号 |
CA2354691(A1) |
申请公布日期 |
2000.06.15 |
申请号 |
CA19992354691 |
申请日期 |
1999.12.07 |
申请人 |
CALCITECH LTD. |
发明人 |
DE PAUW GERLINGS, JOHANNES HENDRIKUS MARTINUS |
分类号 |
C01F11/02;C01F;C01F11/00;C01F11/16;C01F11/18;(IPC1-7):C01F11/18 |
主分类号 |
C01F11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|