发明名称 |
RECOVERY OF ZINC FROM LEAD SLAG |
摘要 |
<p>A method for recovering zinc from slag derived from lead smelting comprises subjecting the slag to a leaching step under conditions in which zinc is dissolved into solution and silica present in the slag dissolves and re-precipitates in a form that is readily separable from liquid, and recovering zinc from the solution. The slag may be subjected to leaching in at least two stages in which in a first leaching stage only part of the zinc is removed from the slag and further zinc leaching from the slag occurs in a second stage to form a pregnant leaching solution and recovering zinc from the solution. The method may be used to remove SO2 from a gas stream by using the SO2- containing gas stream to leach a slurry of the slag.</p> |
申请公布号 |
WO2014022882(A1) |
申请公布日期 |
2014.02.13 |
申请号 |
WO2013AU00865 |
申请日期 |
2013.08.06 |
申请人 |
GLENCORE QUEENSLAND LIMITED |
发明人 |
VOIGT, PAUL |
分类号 |
C22B3/20;B01D53/50;B01D53/80;C22B19/00 |
主分类号 |
C22B3/20 |
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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