发明名称 |
Compositions comprising mineral particles in suspension and method of treating aqueous systems therewith. |
摘要 |
<p>An aqueous slurry of mineral particles, for example calcium carbonate and/or calcium hydroxide, has a mineral solids concentration of at least 40% m/m and contains an agent that maintains the slurry at a pumpable viscosity but that acts as a flocculant upon dilution of the slurry. Suitable agents include cationic and amphoteric polyelectrolytes having nitrogen-containing groups, for example polyamines and dimethyl diallyl ammonium chloride polymers. The slurries may contain, other components, for example a synthetic hectorite or a dispersing agent such as a polyacrylate, polymethacrylate or polyphosphate. The slurries are useful in papermaking and in the treatment of sewage.</p> |
申请公布号 |
EP0104904(A1) |
申请公布日期 |
1984.04.04 |
申请号 |
EP19830305667 |
申请日期 |
1983.09.23 |
申请人 |
BLUE CIRCLE INDUSTRIES PLC |
发明人 |
BECKETT, CHRISTINE ANNE;MATTHEWS, KENNETH BRADLAW;SMITH, DAVID ERNEST;DAVIDSON, RICHARD ROBERTSON |
分类号 |
B01D21/01;C02F1/52;C02F1/54;D21H17/67;D21H17/69;(IPC1-7):02F1/52;21H3/78 |
主分类号 |
B01D21/01 |
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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