发明名称 |
Water continuous emulsion polymers for improving 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 |
US6086771(A) |
申请公布日期 |
2000.07.11 |
申请号 |
US19980203314 |
申请日期 |
1998.11.30 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
SELVARAJAN, RADHAKRISHNAN;PHILLIPS, EVERETT C.;STROMINGER, MICHAEL G.;COUNTER, JAMES A. |
分类号 |
B01D21/01;C01F7/06;C02F1/56;(IPC1-7):B01D21/01 |
主分类号 |
B01D21/01 |
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