| 发明名称 |
Filtration aids for removal of calcium solids from aqueous phosphoric acid |
| 摘要 |
Separation of gypsum from phosphoric acid liquor produced during the production of phosphoric acid from finely ground phosphate rock. These aids are characterized as containing sulfonate and acrylamide.
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| 申请公布号 |
US4800071(A) |
申请公布日期 |
1989.01.24 |
| 申请号 |
US19880189870 |
申请日期 |
1988.05.03 |
| 申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
KAESLER, RALPH W.;ROBINSON, DONALD G.;MOSS, WAYNE L.;FAILON, BRIAN K. |
| 分类号 |
C01B25/225;(IPC1-7):C01B25/16;B01D21/01;B03D3/00;C02F1/52 |
主分类号 |
C01B25/225 |
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