| 发明名称 |
AN IMPROVED PROCESS FOR RECOVERING PRICIPITATED ALUMINA TRIHYDRATE HAVING IMPROVED BRIGHTNESS |
| 摘要 |
<p>Bayer process organic impurities are removed from aqueous caustic solutions of alumina by using a two-step treatment in which a cationic polymer is added between blowoff discharge and prior to feeding the primary settler followed by an anionic polymer, such as starch and/or certain acrylic acid polymers.</p> |
| 申请公布号 |
IN165425(B) |
申请公布日期 |
1989.10.14 |
| 申请号 |
IN1986CA57319 |
申请日期 |
1986.07.29 |
| 申请人 |
AMERICAN CYANAMID COMPANY |
发明人 |
GARLAND ERIC KOESTER |
| 分类号 |
C02F1/52;B01D21/01;C01F7/06;C01F7/47;(IPC1-7):C01F7/02 |
主分类号 |
C02F1/52 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
