发明名称 |
PROCESS FOR THE INSTANTANEOUS CONTROL OF PRECIPITATION OF NICKEL AND COBALT PRESENT IN THE LEACH LIQUOR, BY ADJUSTING THE PH OF THE SOLUTION |
摘要 |
The present invention concerns a process for the instantaneous control of the precipitation of nickel and cobalt present in a leach liquor by adjustment of the pH-value. Said leach liquor is obtained by pressurized acidic leaching of laterile ores and additionally contains aluminium, ferric and ferrous iron and chromium among others. The process comprises the following steps: precipitation of aluminium, ferric and ferrous iron, chromium etc. by increasing the pH- value by adding a suitable reagent such as lime and/or limestone, following precipitation of nickel and cobalt by further increasing the pH-value of the liquor, finally separating the precipitate from the low-content nickel and cobalt solution. The nickel and cobalt precipitate can be used for further refinement. In order to keep the process conditions constant, the steps of increasing the pH-value are controlled simultaneously.
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申请公布号 |
US2009241733(A1) |
申请公布日期 |
2009.10.01 |
申请号 |
US20070306880 |
申请日期 |
2007.06.25 |
申请人 |
TORRES VANESSA MACEDO;DA COSTA MARCELO AUGUSTO CASTRO LOPES;EVELIN SALOMAO SOLINO |
发明人 |
TORRES VANESSA MACEDO;DA COSTA MARCELO AUGUSTO CASTRO LOPES;EVELIN SALOMAO SOLINO |
分类号 |
C22B23/00;C22B3/04;C22B3/20 |
主分类号 |
C22B23/00 |
代理机构 |
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