转底炉生产直接还原铁的工业性试验

Industrial Trial on Direct Reduction Iron Production by Rotary Hearth Furnace

为验证转底炉生产直接还原铁的可行性和经济性,采用云南铁矿资源组织开展了转底炉生产直接还原铁的工业性试验,共生产金属化率为79.29%的直接还原铁991.67 t。主要技术经济指标为:还原剂煤耗301 kg/t,发生炉煤耗290 kg/t,生产成本1 179.23元/t。试验结果为转底炉直接还原铁工艺的开发提供了理论依据。

Abstract ： In order to verify the feasibility of technology and economy on the production of direct reduction iron by ro- tary hearth furnace, KISC has exploited the iron ore resources of Yunnan Province to carry out large-scaled industri- al trial of RHF production, under the cooperation with Shanxi Ruito Smelting Reduction Ironmaking Company. Dur- ing the industrial trial, totally 991. 67 t DRI products have been produced, whose metallization rate is about 79.29 %. The primary technologic and economic parameters include that reductant coal rate is 301 kg/t-DRI, coal rate of gasification furnace is 290 kg/t-DRI, and the production cost is 1179. 23 RMt3/t-DRI. The experimental results will provide the valuable reference for development of rotary hearth furnace direct reduction technology in China.