发明名称 |
Process of treating a dust which contains zinc and lead and which is derived from an iron or steel making process. |
摘要 |
<p>Zinc and lead are separated together out of dust derived from a gas-cleaning installation in iron or steel making by a flotation-separation treatment. In order economically to provide a good separation of these metals and to leave a residue which is re-usable in an orepreparation process in the iron and steel industry, the flotation-separation treatment is at a pH of 7 to 9 and is effective to achieve a separation, according to size of the dust particles, of a floated component in which the zinc and lead are concentrated and a non-floated component which is suitable for re-use.</p> |
申请公布号 |
EP0040870(A1) |
申请公布日期 |
1981.12.02 |
申请号 |
EP19810200486 |
申请日期 |
1981.05.07 |
申请人 |
HOOGOVENS GROEP B.V. |
发明人 |
HEIJWEGEN, CORNELIS PETRUS;KAT, WILLEM |
分类号 |
C22B19/30;B03B9/04;B03D1/008;B03D1/02;B03D1/08;C21B3/04;C21C5/38;C22B1/00;C22B7/02;C22B13/00;C22B19/00;(IPC1-7):22B7/02;03D1/00;22B13/04;22B19/00 |
主分类号 |
C22B19/30 |
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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