论文部分内容阅读
采用氧气顶吹熔融还原法进行了高磷铁矿和钛铁矿混合矿炼铁的实验研究,考察了熔渣四元碱度、反应温度、碳氧摩尔比、通氧时间、保温时间和氧流量对炼铁效果的影响.结果表明,提高反应温度、在一定范围内增加CaO加入量、提高碳氧摩尔比、延长通氧时间和保温时间、增加氧流量都能不同程度地提高铁还原率.确定的合理工艺条件为:温度1500℃,碱度1.3,碳氧摩尔比1.0,保温时间30 min,通氧时间10 min,氧流量350 L/h,在此条件下渣铁分离较好,铁还原率达96.17%.
The experimental study on ironmaking from high-phosphorus iron ore and ilmenite mixed ore was carried out by oxygen top-blown melt reduction. The effects of slag alkalinity, reaction temperature, molar ratio of oxygen to carbon, oxygen passage time, holding time and oxygen The results show that increasing the reaction temperature can increase the iron reduction rate in a certain range by increasing the amount of CaO, increasing the molar ratio of carbon to oxygen, extending the oxygen passage time and holding time, and increasing the oxygen flow rate The reasonable process conditions were as follows: temperature 1500 ℃, basicity 1.3, molar ratio of carbon to oxygen 1.0, holding time 30 min, oxygen time 10 min, oxygen flow 350 L / h, Iron reduction rate of 96.17%.