摘要
通过对烧结、焦化、炼铁、炼钢、轧钢等工序产生的各种含铁粉尘的成分、产量、粒度、形貌等特性进行分析,介绍了烧结除尘灰和炼钢除尘灰在钢铁厂内部自循环的综合应用.长流程炼钢除尘灰产量为70～90 kg/t钢,其中烧结、焦化、高炉、炼钢工序的除尘灰产量分别占 36.3%、7.1%、32.4%、24.2%.除尘灰冷固压球替代返矿在转炉中做冷却剂和造渣料,前期起渣、化渣效果较好,每增加 1 kg/t冷固压球使用可以减少转炉钢铁料0.3～0.5 kg/t,但随着冷固压球用量增加,转炉炉渣的脱磷能力明显降低.
Abstract
Through the analysis of the composition,output,particle size,morphology and other characteristics of various iron-containing dust generated during sintering,coking,iron-making,steel-making,steel rolling and other processes,the comprehensive application of sintering dust and steel-making dust in the internal self-circulation of steel plants is introduced.The yield of long-process steel-making dust is 70～90 kg/t steel,of which the dust yields from sintering,coking,blast furnace and steel-making processes account for 36.3％,7.1％,32.4％ and 24.2％ respectively.The cold-solid pressure ball of dust is used as a substitute for return ore in the converter as a coolant and slagging material.The early slagging and slagging effects are good,and the use of 1 kg/t cold-solid pressure ball can reduce the steel material in the converter by 0.3～0.5 kg/t.However,as the amount of cold-solid pressure ball increases,the dephosphorization ability of converter slag significantly decreases.
维普
万方数据