煤制气-竖炉生产直接还原铁浅析

以国内磁选铁精矿为原料制备的氧化球团综合性能良好，可作为竖炉直接还原用氧化球团。国内适合于煤气化的褐煤和低变质烟煤资源储量较大，占煤炭资源总量的50%以上，可以满足煤化工发展的需求。综合煤种需求、生产能力、煤气品质以及能耗指标，选取适宜的煤气化工艺，形成以煤制合成气为还原剂，以竖炉为反应器的煤制气-竖炉直接还原炼铁新工艺，是煤资源丰富而天然气匮乏的中国发展直接还原铁生产、实现低碳高效炼铁的有效途径。

Tentative Study on Direct Reduction Iron Production by Gasification-Shaft Furnace

The oxidized pellets, which are prepared form domestic magnetic iron concentrate, show good comprehensive performance and can be used in gas-based shaft furnace to produce direct reduction iron. Lignite and low metamorphic bituminous coal reserves of China for the coal gasification occupies the 50% above of coal reserves about and can meet the needs of the development of the coal chemical industry. Synthesize the demand of coal, the ability of production, the quality of coal gas and the index of energy consumption, select the suitable coal gasification, and finally forms the new gasification-shaft furnace direct reduction iron-making process which takes the coal-formed gas as the reductant and the shaft furnace as the reactor. The new process is an effective way to develop direct reduction iron and low carbon ironmaking in china where nature gas resource is poor and noncoking coal resource is rich.