发明名称 |
Hydrometallurgisk behandling for rensing av waelz-oksyder ved utluting med natriumkarbonat |
摘要 |
<p>The hydrometallurgical treatment process provides for the removal of contaminants from waelz oxide, (chlorine, sodium, potassium, sulfur and fluorin, essentially), and comprises the followings steps: lixiviation with soldium carbonate in aqueous alcalin medium, in hot conditions; solid-liquid separation of the effluent and the solid material; purification of the effluent by removing the heavy metals and optionally the undesired anions; washing with water the solid material resulting from the sodic lixiviation; solid/liquid separation of the water and of the purified waelz oxide; recirculation and heating of the effluent obtained in the washing step in order to reuse it in the sodic lixiviation.</p> |
申请公布号 |
NO965257(D0) |
申请公布日期 |
1996.12.09 |
申请号 |
NO19960005257 |
申请日期 |
1996.12.09 |
申请人 |
COMPAGNIE INDUSTRIAL ASUA-ERANDIO SA (ASER SA) |
发明人 |
SIERRA, IKER DANOBEITIA;ALDA, JAVIER VALLEJO OCHOA DE;GANDIAGA, NESTOR GOICIECHEA |
分类号 |
C22B3/04;C22B3/14;C22B7/00;C22B7/02;C22B19/28;C22B19/30;(IPC1-7):C22B |
主分类号 |
C22B3/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|