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采用模拟HIsmelt的富氧顶吹熔融还原技术冶炼惠民高磷铁矿与勐桥钛铁矿配矿,在温度为1 500K,碱度为1.3,配碳比为1.0的条件下,恒温时间20min(在升温过程中,没有通入惰性气体),恒温过程中通入O2(流量250L/h、纯度为99%)10min。恒温时间结束后,调整氧气流量为5L/h,保持其氧化性气氛至冷却。研究了不同配矿比例对铁回收率、生铁中磷、硫含量以及磷、硫分配比的影响。研究结果表明,在惠民铁矿和勐桥精矿的比例为1∶1时,其冶炼结果比较理想:铁的回收率为95.1%,生铁中磷的质量分数约为0.32%,硫的质量分数为0.054%,钛的质量分数为0.031%。
Using HIsmelt oxygen-rich top-blown melting reduction technology to smelt Huimin high-phosphorus iron ore and Mengqiao ilmenite ore, under the conditions of a temperature of 1500K, a basicity of 1.3 and a carbon ratio of 1.0, the constant temperature time is 20min (In the heating process, there is no access to inert gas), pass into the constant temperature O2 (flow 250L / h, purity 99%) 10min. After the thermostatic time is over, adjust the oxygen flow rate to 5L / h, maintaining its oxidizing atmosphere to cool down. The effects of different proportions of iron ore on iron recovery, phosphorus and sulfur content in pig iron and phosphorus and sulfur distribution ratio were studied. The results show that when the ratio of Huimin Iron Mine and Mengqiao Concentrate is 1: 1, the smelting result is quite satisfactory: the recovery rate of iron is 95.1%, the phosphorus content of pig iron is about 0.32%, the quality of sulfur The score is 0.054% and the mass fraction of titanium is 0.031%.