【作者】 杨雪峰； 沈峰满； 杨杰康； 代书华；

【Author】 Yang Xuefeng~(1,2) Shen Fengman~2 Yang Jiekang~1 Dai Shuhua~2 (1. Technical Center, Kunming Iron & Steel Company Limited, Kunming 650302; 2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004)

【机构】 昆明钢铁股份有限公司技术中心； 东北大学材料与冶金学院；

【摘要】 昆钢三烧结合自身实际,通过实验室试验研究,选择确定了适宜的CaCl₂试剂以及烧结矿喷洒CaCl₂工艺参数,在工业试验期间,使用约10kg/t、浓度3.1%的CaCl₂溶液可明显改善烧结矿的低温还原粉化性能:低温还原粉化强度RDI_+6.3提高51.31个百分点、低温还原粉化指数RDI_-3.15降低33.20个百分点、磨损指数RDI_-0.5降低5.41个百分点。使用该烧结矿可使高炉操作指标得到提升,昆钢高炉生产条件下,使高炉料柱压差降低2kPa、透气性指数提高188m³/（min·MPa）,高炉炉况顺行,无崩挂料,高炉增产节焦效益显著。更多还原

【Abstract】 According to its own practice, the third sintering plant of KISC finds the adapted reagent that contains CaCl₂ and the technical parameters of industrial test of spraying CaCl₂ to the sinter through lab experimental investigation. During the time of industrial test, spraying 10kg/t 3.1% CaCl₂ solution to sinter, the sinter low temperature reduction disintegration indexes are improved dramatically: RDI_+6.3 increases by 51.31%, RDI_-3.15 decreases by 33.2%, RDI_-0.5 decreases by 5.42%. As a result, the BF operation indexes have been improved,the pressure drop of stock column decreases 2kPa, permeability index increases 188m³/（min·MPa）, the blast furnace is in free driving condition, hanging and slipping don’t happen, production increases dramatically and the consumption of coke decreases obviously.更多还原