红土型镍矿电炉还原熔炼工厂实验研究

The Pilot Plant Research of Laterite Reduction Smelting in Electric Furnace

本文采用1000 kVA的圆形电炉,研究了300 t红土镍矿的还原熔炼过程。通过调整焙砂还原煤的加入量来研究泡沫渣的形成机理,实验表明在干矿中加入还原煤少于4%（干基）会产生泡沫渣;还原熔炼过程镍铁产品的含镍量在16%~22%之间,降低还原煤的加入量,能够提高镍铁产品中镍的品位;电炉中镍的分配系数为100,镍的回收率为94.4%。电炉的能耗随着实验时间的延长而逐步降低。

300 t of laterite nickel ore was smelted by a 1 000 kVA circle electric furnace in Shenyang pilot plant.Slag foaming could commence if the reductant coal addition to the ore is less than 4%（dry wt）,the Ni content in the produced ferronickel was between 16% and 22%,ferronickel grade increased while the reductant coal addition decreased.The Ni recovery in the electric furnace was 94.4% with the nickel partition coefficient of 100.Power consumption of the electric furnace could decrease with the prolongation of the experiment time.