关于缓冷时间对电炉渣中铜物相颗粒粒度影响的探讨

采用光学显微镜、扫描电子显微镜、矿物自动分析仪(AMICS)及化学物相分析等仪器和手段,对某铜冶炼厂不同缓冷时间条件下的电炉渣进行了系统的工艺矿物学研究。研究结果表明,随着冷却时间的延长,直接喷水冷淋的电炉渣中铜物相的粒度相比自然冷却的电炉渣,分布在0.020mm以下的占有率由52.48%降低至40.37%,电炉渣中的铜物相颗粒粒度有所增加,但增加幅度不大。可见,延长电炉渣的冷却时间,可促使冰铜颗粒的长大,有利于后续浮选回收,但缓冷时间只是影响冰铜颗粒生长的重要的因素之一。

Discussion on the Effect of Slow Cooling Time on the Particle Size of Copper Phase in Electric Furnace Slag

By means of optical microscopy, scanning electron microscopy, mineral automatic analyzer (AMICS) and chemical phase analysis, the process mineralogy of slag from a copper smelter under different cooling time conditions was studied systematically. The results show that the particle size of Copper Phase in slag increases with the increase of cooling time, but the increase is not significant. It can be seen that prolonging the cooling time of electric furnace slag can promote the growth of matte particles, which is conducive to subsequent flotation recovery, but cooling time is only one of the important factors affecting the growth of Copper Phase particles.