发明名称 |
PROCESS OF TREATING CONTAMINATED SOILS |
摘要 |
Contaminated soils are treated in that an aqueous slurry of the soil is separated into a coarse fraction and a fine fraction, the fine fraction is subjected to flotation, the resulting froth is dewatered and then carried away as a pollutant concentrate, and the underflow from the flotation is dewatered and is then carried away as purified soil. An emulsified oily vegetable oil is used as a collector agent for the selective flotation or an emulsified light mineral oil is used as a collector agent for the selective flotation and a light mineral oil is stirred as a conditioning agent into the fine fraction before it is subjected to the selective flotation.
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申请公布号 |
US5223147(A) |
申请公布日期 |
1993.06.29 |
申请号 |
US19910802948 |
申请日期 |
1991.12.06 |
申请人 |
METALLGESELLSCHAFT AKTIENGESELLSCHAFT |
发明人 |
ROSENSTOCK, FRIEDRICH;GUENTNER, JOCHEN;HAITE, ELMAR;DITTMANN, HORST |
分类号 |
B03D1/004;B03D1/006;B03D1/008;B03D1/02;B09B3/00;B09C1/02;B09C1/04 |
主分类号 |
B03D1/004 |
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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