中文摘要：

为了克服非高炉炼铁技术存在的缺陷和不足,创新性地设计出一种煤基还原炼铁新工艺.自主研发具有较高的一氧化碳二次燃烧率的新型还原炉,辅以流程短、操作简便的工艺流程,可实现高温熔融还原和直接还原的双向选择.选取从印尼进口的低品位红土镍矿进行试生产,得到的镍铁品位高,有害杂质少,节能环保.验证了煤基还原炼铁新工艺冶炼低品位红土镍矿的可行性,为红土镍矿的有效合理利用提供参考.

英文摘要：

To overcome the defects and insufficiencies of non-blast furnace ironmaking technology emphatically, a new coal-based re- duction ironmaking technology is designed innovatively. Supplemented by the short and simple process, the new restorer was independently created with a high rate of secondary combustion of carbon monoxide, which could realize two-way selection of high-temperature smelting reduction and direct reduction. Using the low-grade nickel laterite ore imported from Indonesia for pilot production, the final nickel iron was gained with favorable results including high grade, less harmful impurities, energy efficiency and environmental protection. The new coal-based reduction iron-making technology was verified feasible so that it could provide a reference for the effective and rational utili- zation of laterite nickel ore.