铁水包加废钢再受铁可行性探究

Feasibility Study on Ladle with Scrap Add Iron

摘要: 为了降低生产成本，提高生存能力，挖潜增效，永钢通过在2#~5#高炉和1#钢厂实施“铁水包加废钢再受铁”的工业性试验，来间接提高废钢比，并探索废钢预热、加入量、停留时间等对炼钢用铁水的影响。研究结果表明：废钢未预热，铁水包无结底；废钢种类选择了材质较薄的散装电工钢；废钢加入量占铁水包容量的百分比为3%；加废钢的铁水包对铁水停留时间影响不大。综合计算1#钢厂的废钢比由16%提高至18%，效果十分显著，为“铁水加废钢”常态化运行提供了依据。

Abstract: In order to reduce the production cost and improve survival ability, tapping potential and in-creasing efficiency, Yong Steel indirectly increases the scrap steel rate through the implementation of test ladle with scrap in 2#~5# blast furnace and 1# steel mill, and explores the effect of scrap preheating and residence time on molten iron of steelmaking; the industrial test begins to take effect in Yong Steel. The results show that: without preheating, the hot metal ladle bottom is clean; the bulk electrical steel scrap material is thin and easy to be melted in the high temperature molten iron; each hot metal ladle add some scrap steel, and the amount of steel added to each ladle accounts for 3 percent of the iron ladle; The hot metal ladle packing with scrap steel has little impact on the residence time of the hot metal. The steel scrap ratio of 1# steel mill is increased from 16% to 18%, and the effect is remarkable. Thus it can be seen that it provides a basic research for normalizing operation of “the adding scrap steel into ladle”.