铜冶炼渣固废资源制备珠铁的研究

发布时间：2018-04-05 11:06

  本文选题：还原焙烧　切入点：转底炉　出处：《矿冶工程》2017年05期

【摘要】：为了最大程度地回收铜渣中的铁资源、得到高品质的珠铁产品,在实验室条件下模拟转底炉,使用高温炉焙烧还原由铜渣、还原煤、石灰石制备的含碳球团,直接还原生成珠铁和渣,再通过人工挑选的方式实现渣铁分离。研究了焙烧温度、焙烧时间、还原煤用量、石灰石用量等因素对焙烧效果、珠铁全铁品位、铁回收率的影响,确定较佳的球团配料比为铜渣∶还原煤∶石灰石=100∶20∶10,较佳的焙烧条件为焙烧温度1 400℃、焙烧时间40 min,最终可获得铁回收率91.04%、全铁品位94.72%、C含量1.23%的高品质珠铁。
[Abstract]:In order to maximize the recovery of iron from copper slag and obtain high quality bead iron products, the carbonaceous pellets prepared from copper slag, raw coal and limestone were reduced by calciner roasting under laboratory conditions.Direct reduction produces bead iron and slag, and then realizes the separation of slag and iron by manual selection.The effects of calcination temperature, roasting time, amount of raw coal and limestone on roasting effect, total iron grade of bead iron and iron recovery rate were studied.The best pellet proportioning ratio is copper slag: raw coal: limestone 100: 20: 10. The best roasting conditions are calcination temperature 1 400 鈩，

本文编号：1714494