摘要
采用高温脱硅—磁选工艺从炼铜水淬渣中回收铁。探讨了脱硅温度、氧化钙用量、通氧时间、缓冷速率对铁回收指标的影响。试验结果表明:在脱硅温度为1 350℃、CaO/SiO2摩尔比为0.9、通氧时间为30min、缓冷速率为5 K/min条件下,可得到品位为62.8%、铁回收率为69.8%的高质量铁精矿。该工艺将铁橄榄石转化为磁铁矿,大大提高了铁的回收率。
Process of desilication under high temperature - magnetic separation was adopted for iron recovery from water quenched slag of copper smelting. The factors which affect iron recovery such as desilication temperature, lime consumption, oxygen feeding time, slow cooling rate were studied. The results indicated that when desilication temperature of 1 350℃, CaO/SiO2 molar ratio of 0.9, oxygen feeding time of 30 minutes, slow cooling rate of 5K/min were used respectively, a high quality iron concentrate of 62.8% Fe and with a recovery of 69.8% was obtained. Iron recovery was greatly improved by transforming fayalite to magnetite.
出处
《矿产保护与利用》
2009年第3期51-54,共4页
Conservation and Utilization of Mineral Resources
关键词
水淬渣
脱硅
铁橄榄石
磁选
water quenched slag
desilication
fayalite
magnetic separation
作者简介
黄自力（1965-），男，湖南祁阳县人，博士，副教授，主要从事矿物加工及二次资源综合利用研究。
