| 摘要 |
<p>PCT No. PCT/SE94/00376 Sec. 371 Date Mar. 1, 1996 Sec. 102(e) Date Mar. 1, 1996 PCT Filed Apr. 27, 1994 PCT Pub. No. WO94/26419 PCT Pub. Date Nov. 24, 1994The invention relates to a method of floating calcium carbonate ore containing silicates as impurities. Floatation is performed in the presence of a quaternary ammonium compound and an alkylene oxide adduct of an amine compound. The silicate being concentrated in the float.</p> |
