发明名称 |
WATER CONTINUOUS EMULSION POLYMERS FOR IMPROVING THE EFFICIENCY OF FILTRATION, CLARIFICATION AND SCALE CONTROL IN THE BAYER PROCESS |
摘要 |
The present invention is directed to improvements in the Bayer mining process, used for the recovery of alumina from bauxite ore. Water-continuous emulsion polymers are advantageously used to improve the clarification, filtration and scale control of red-mud containing liquors generated during the Bayer process. Preferred polymers are high molecular weight poly(methyl acrylate/acrylic acid), poly(methyl acrylate), poly(vinyl acetate/acrylic acid/methyl acrylate) and a combination of a high molecular weight poly(methyl acrylate/acrylic acid) with a lower molecular weight poly(methyl acrylate/acrylic acid).
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申请公布号 |
WO9930794(A1) |
申请公布日期 |
1999.06.24 |
申请号 |
WO1998US26207 |
申请日期 |
1998.12.10 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
SELVARAJAN, RADHAKRISHNAN;PHILLIPS, EVERETT, C.;STROMINGER, MICHAEL, G.;COUNTER, JAMES, ADRIAN |
分类号 |
B01D21/01;C01F7/06;C02F1/56;(IPC1-7):B01D21/01 |
主分类号 |
B01D21/01 |
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