COREX流程熔炼煤的选择  

Selection of smelting coal for COREX process

作　　者：郭丽[1] 方觉[1] 赵亮[2] 刘培骁[1] 

机构地区：[1]河北理工大学,河北唐山063009 [2]昆明理工大学,云南昆明650093

出　　处：《南方金属》2006年第5期13-15,共3页Southern Metals

摘　　要：COREX流程的高效生产主要取决于熔炼煤的选取.使用性能适当的熔炼煤可以减少整个流程的净能耗,降低生产成本,并且摆脱对焦炭的依赖.在COREX流程中,主要检测熔炼煤的有效热值、成分和热稳定性.这些指标分别从煤耗、还原气利用率和固定床高度方面影响着整个生产流程.较高的有效热值保证了熔炼造气炉内具有足够的热量熔炼海绵铁,熔炼煤的成分通过气体利用率来确保还原竖炉内具有足够的还原气还原铁矿石.为了减少焦炭的用量,熔炼煤还必须具有一定的热稳定性来形成一个稳定的固定床.A high efficiency of the COREX process relies on the right selection of the smelting coal. Utilization of appropriate smelting coal can reduce energy consumption, lower production cost, and avoid overdue dependence of the smelting on coke. The effective calorific value, composition and thermal stability of the smelting coal are all important for the COREX process, because they can influence the smelting process by influencing the coal consumption, the utilization rate of reduction gas, and the height of the fixed bed. A high effective calorific value will provide adequate thermal energy for smelting the sponge iron; an appropriate composition of the smelting coal and a propor utilization rate of reduction gas are needed to provide sufficient quantity of reduction gas in the reduction shaft to reduce the iron ore; and a high thermal stability of the coal is important for keeping a fixed bed height.

关 键 词：熔炼造气炉 COREX 有效热值 还原气利用率 

分 类 号：TF046.4[冶金工程—冶金物理化学] TQ531[化学工程—煤化学工程]