发明名称 |
VERFAHREN ZUR HERSTELLUNG VON MINERALPIGMENTEN, AUF DIESE WEISE ERHALTENDE MINERALPIGMENTE, UND ANLAGE ZUR DURCHFÜHRUNG EINES SOLCHEN VERFAHRENS |
摘要 |
<p>PCT No. PCT/FR96/01202 Sec. 371 Date May 27, 1998 Sec. 102(e) Date May 27, 1998 PCT Filed Jul. 30, 1996 PCT Pub. No. WO97/06215 PCT Pub. Date Feb. 20, 1997A method for preparing inorganic pigments from steel mill dust, particularly electric steel mill dust, wherein (a) the dust is separated into a magnetic fraction and a non-magnetic fraction; (b) the non-magnetic fraction is subjected to a basic leaching reaction; (c) the resulting solid batch is rinsed until neutralized and then separated; (d) the resulting batch is calcined at 450-650 DEG C.; (e) the calcined batch is treated with sulfuric acid in the presence of a catalyst; (f) the inorganic pigments are recovered; and (g) the solutions from (c) and (e) are used to precipitate other pigments.</p> |
申请公布号 |
AT181096(T) |
申请公布日期 |
1999.06.15 |
申请号 |
AT19960927109T |
申请日期 |
1996.07.30 |
申请人 |
RECUPAC |
发明人 |
ROUX, GILLES;TEDJAR, FAROUK |
分类号 |
C01G49/00;C09C1/00;C09C3/00;C09D5/08;C09D7/12;C09D201/00;C22B3/44;C22B7/00;C22B7/02;C22B19/30;(IPC1-7):C09C1/00 |
主分类号 |
C01G49/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|