发明名称 |
Förfarande för extrahering och koncentrering av små och medelstora kadmiummängder ur avfallsvatten innehållande koncentrerad svavelsyra |
摘要 |
<p>Process for the extraction and concentration of cadmium contained in low and intermediate concentrations in concentrated sulphuric effluents. The objective of the invention is to concentrate the cadmium in order to enable it to be subsequently reclaimed or stored in the form of waste. This objective is met with the aid of a process including four successive extraction steps carried out with the aid of monothiophosphinic acid, hydrochloric acid, trialkyl phosphate and water, respectively. This process applies especially to the treatment of the raffinates originating from the purification of phosphoric acid. <IMAGE></p> |
申请公布号 |
FI946074(A) |
申请公布日期 |
1995.06.25 |
申请号 |
FI19940006074 |
申请日期 |
1994.12.23 |
申请人 |
COMMISSARIAT A L'ENERGIE ATOMIQUE |
发明人 |
LEYBROS, JEAN |
分类号 |
C01B17/90;C01B25/222;C02F;C02F11/00;C22B3/38;C22B17/00;(IPC1-7):C02F |
主分类号 |
C01B17/90 |
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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