锌在高炉内渣铁中溶解行为计算分析

通过分析锌在高炉下部的行为，结合高炉物料平衡和锌平衡计算，建立锌在高炉内渣铁中溶解行为计算模型.定义高炉炉腹煤气锌含量指数，表征锌在高炉内的循环富集程度.运用某钢厂的实际生产数据进行计算，得出该高炉炉腹煤气锌含量指数为568；高炉炉渣、铁水中的锌均处于饱和状态，炉渣、铁水中的锌含量分别为最终冷态下炉渣、铁水中锌含量的316倍和10倍；同时分析了锌在高炉炉底砖衬的堆积机理和锌对高炉风口的侵蚀机理，提出减缓锌对高炉破坏作用的防治措施.

Calculation Analysis of Zinc Dissolution Behaviors of the Slag Iron in Blast Furnaces

Based on the material balance and zinc balance calculation， through the analysis of zinc behaviors in lower part of blast furnace， a calculation model for zinc solution behaviors among the slag and the hot metal was established.Zn index at BF bosh was proposed to represent the degree of circulating enrichment of zinc. The practical data of a steelwork was used for calculation， and the index of the zinc content of the coal gas in bosh of the blast furnace was 568. Zinc was in the saturation state in both slags and hot metals in the furnace， and the content of it was 316 times and 10 times as much as that in the final room temperature condition for the slag and hot metal respectively. The accumulation mechanism in blast furnace bottom brick and the erosion mechanism of zinc on tuyere were also analyzed， offering references for alleviating destructive effects of zinc on the blast furnace.