发明名称 |
Processes for treating aluminium dross residues |
摘要 |
There is provided a process for preparing aluminium chloride comprising: leaching aluminium dross residues with HCl so as to obtain a mixture comprising a solid and a liquid; and hydrochlorinating the liquid obtained from the mixture, so as to form a precipitate comprising aluminium chloride. Such a sequence can also be used for preparing alumina. In such a case, the process can further comprise the step of converting the so-obtained aluminium chloride into alumina. In the processes previously defined, the solid so-obtained can also be leached with H2SO4, thereby generating a leachate. The leachate can also eventually be hydrochlorinated so as to increase the yield of the desired product obtained i.e. alumina or aluminium chloride.
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申请公布号 |
US7651676(B2) |
申请公布日期 |
2010.01.26 |
申请号 |
US20070944567 |
申请日期 |
2007.11.23 |
申请人 |
GROUPE CONSEIL PROCD INC. |
发明人 |
BEAULIEU MARTIN;CHABOT STEPHANE;CHAREST YVES;SAVARD JEAN-FRANCOIS |
分类号 |
C01F7/56;C01F7/30;C22B21/00 |
主分类号 |
C01F7/56 |
代理机构 |
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代理人 |
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地址 |
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