发明名称 |
COMPOSITIONS COMPRISING MINERAL PARTICLES IN SUSPENSION AND METHOD OF TREATING AQUEOUS SYSTEMS THEREWITH |
摘要 |
<p>COMPOSITIONS COMPRISING MINERAL PARTICLES IN SUSPENSION AND METHOD OF TREATING AQUEOUS SYSTEMS THEREWITH 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 |
CA1216781(A) |
申请公布日期 |
1987.01.20 |
申请号 |
CA19830437294 |
申请日期 |
1983.09.22 |
申请人 |
BLUE CIRCLE INDUSTRIES PLC., PORTLAND HOUSE, STAG PLACE, LONDON, S |
发明人 |
MATTHEWS, KENNETH B.;BECKETT, CHRISTINE A.;DAVIDSON, RICHARD R.;SMITH, DAVID E. |
分类号 |
B01D21/01;C02F1/52;C02F1/54;D21H17/67;D21H17/69;(IPC1-7):C02F1/56 |
主分类号 |
B01D21/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|