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为了进一步改善5 500m~3特大型高炉精料入炉水平,首钢京唐炼铁作业部在停配白云石熔剂实现自然镁烧结的基础上,结合相关烧结杯试验做了微观组织结构研究。根据生产实际,通过采取优化配矿结构以及调整过程控制参数等措施,逐步降低烧结矿SiO_2与MgO质量分数生产低硅低镁烧结矿。通过低硅低镁烧结技术的应用,首钢京唐炼铁作业部在改善烧结矿品位稳定强度、粒度的基础上保证了入炉精料水平,并取得了较好的效果,为首钢京唐5 500m~3特大型高炉提高综合入炉品位、降低渣比以及喷煤降焦创造了良好的原料条件。
In order to further improve the 5 500 m ~ 3 extra large blast furnace concentrate into the furnace level, Shougang Jingtang Ironmaking Operations Department made the microstructure study on the basis of cementation of dolomite flux to realize the natural magnesium sintering combined with the relevant sintering cup test. According to the actual production, through the measures such as optimizing the mine structure and adjusting process control parameters, the production of low-silicon and low-magnesium sinter is gradually reduced by the mass fraction of sinter SiO2 and MgO. Through the application of low-silicon and low-magnesium sintering technology, Shougang Jingtang Ironmaking Department, on the basis of improving the stability strength and grain size of sinter grade, ensured the quality of the refined materials and achieved good results, 3 large blast furnace to improve the integrated into the furnace grade, lower than the slag and coal-jet coke to create a good raw material conditions.