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通过300kg级氢-碳熔融还原热模拟试验,从热力学角度分析了氢-碳混合熔融还原条件下磷的分配比,运用熔渣规则溶液模型计算了氧化钙、二氧化硅、氧化镁、氧化铝、氧化亚铁、五氧化二磷六元熔渣组分的活度、活度系数,进而计算出一定温度条件下熔渣的磷容量以及渣金平衡时磷分配比的理论值。通过比较理论计算得出的磷分配比与试验中磷的分配比的差异,解析产生差异的原因,进而为氢-碳混合熔融还原炼铁新工艺冶炼高磷铁矿提供参数。试验结果表明:用熔渣规则溶液模型计算渣金间的磷的分配比是合适的,氢-碳熔融还原工艺可以利用高磷铁矿。
Through 300kg hydrogen-carbon reduction heat simulation experiment, the distribution ratio of phosphorus under the hydrogen-carbon mixed smelting reduction condition was analyzed from the thermodynamic point of view. Calcium oxide, silica, magnesia, alumina , Ferrous oxide, phosphorus pentoxide six yuan slag component activity, activity coefficient, and then calculate the temperature under certain conditions phosphorus slag capacity and phosphorus balance at the distribution of the theoretical value. By comparing the difference between the phosphorus distribution ratio and the phosphorus distribution ratio in the experiment, the reasons for the differences were analyzed and the parameters were provided for the smelting of high-phosphorus iron ore by hydrogen-carbon hybrid smelting reduction ironmaking process. The experimental results show that it is suitable to calculate the phosphorus distribution ratio between slag and slag by using the slag solution model, and the high-phosphorus iron ore can be utilized in the hydrogen-carbon smelting reduction process.