【摘要】 本文研究了K₂CO₃对高磷鲕状赤铁矿氢还原过程的影响，通过热力学计算了氢气还原过程中脉石与含磷矿物赋存形态的变化。结果表明，添加K₂CO₃可以有效抑制铁铝尖晶石等相的产生，进而促进铁氧化物的还原。在添加K₂CO₃的基础上，再加入少量CaF₂作为助熔剂可以进一步提高铁的熔分回收率，降低铁中磷含量。在复合添加8%K₂CO₃和4%CaF₂的条件下，球团熔分后的金属产物铁回收率达到84.90%,P含量降至0.06%。更多还原

【Abstract】 This study investigated the effects of K₂ CO₃ on the hydrogen reduction process of high-phosphorus oolitic hematite,and the phase transformation behavior of gangue and phosphorus-bearing minerals during hydrogen reduction was analyzed through thermodynamic calculations. The results show that adding K₂ CO₃ effectively suppresses the formation of phases such as hercynite,thereby promoting the reduction of iron oxides. Furthermore,the introduction of a small amount of CaF₂ as a flux further enhances the melting-separation recovery rate of iron and reduces the phosphorus content in the metal product. Under the condition of composite addition of 8% K₂ CO₃ and 4% CaF₂,the iron recovery rate of the metal product after pellet melting-separation reached 84.90%,with the phosphorus content decreasing to 0.06%.更多还原