发明名称 |
PROCESS FOR PRODUCING BRIGHTENED MINERALS |
摘要 |
A process for producing brightened minerals with a high degree of brightness, in particular for preparing brightened laminated silicates, carbonates and the like, has the following steps: (1) a mineral suspension is mixed with a soda lye; (2) the mixture is dispersed by strongly agitating it; (3) a bleaching agent is added to the dispersion; (4) the mixture is ground then dispersed again; and (5) the dispersion is processed in a high gradient magnetic separator to remove paramagnetic colouring metal oxides. |
申请公布号 |
EP0844988(B1) |
申请公布日期 |
1999.03.24 |
申请号 |
EP19960933316 |
申请日期 |
1996.08.13 |
申请人 |
GEBRUEDER DORFNER GMBH & CO. KAOLIN- UND KRISTALLQUARZSANDWERKE KG |
发明人 |
FORKEL, GUENTER;GASSENHUBER, RUDOLF |
分类号 |
B03C1/015;C04B33/14;C09C1/02;C09C1/28;C09C1/42;(IPC1-7):C04B33/10 |
主分类号 |
B03C1/015 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|