厚渣层铁浴熔融还原炼铁工艺的静态模型

Static Model of Iron Bath Smelting Reduction Process with Thick Slag Layer

提出了一种两步三段式厚渣层铁浴熔融还原炼铁工艺,铁浴炉利用厚渣层保证反应器内球团矿的氧化区氧化放热与还原区还原的梯度隔离,煤气改质炉提高煤气利用率,转底炉预还原匹配整个系统能耗最低.依据物料平衡与能量平衡的原理,建立了该工艺的静态模型,依据设定的工艺流程中各个环节的生产指标,掌握了各个环节的物料消耗与能量消耗情况,并与现阶段各种炼铁工艺进行了对比,阐明了本工艺的特点与优势,为该工艺的生产实践提供了参考.

A two-step three-segment iron bath smelting reduction process with thick slag layer was proposed. The thick slag layer in the smelting reduction vessel was adopted to ensure the separation between the oxidation exothermic of oxidation zone and the reduction of reduction zone. The use of gas reforming furnace improved the gas utilization rate, and the use of rotary hearth furnace pre-reduction matched energy consumption of whole system to be lowest. Based on the material balance and energy balance principle, a static model of the process was established. According to all set aspects of process in production, the mass consumption and energy consumption were obtained and compared with other ironmaking processes to clarify the characteristics and advantages of the present process, which could provide a reference to the production practice.