除尘灰基脱磷剂的研发  

Development of dedusting ash-based dephosphorizer

作　　者：孙国斌 向晓东[1] 邓爱军 李灿华 王昭然 SUN Guo-bin;XIANG Xiao-dong;DENG Ai-jun;LI Can-hua;WANG Zhao-ran(College of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;College of Metallurgical Engineering,Anhui University of Technology,Ma′anshan 243002,Anhui,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]安徽工业大学冶金工程学院,安徽马鞍山243002

出　　处：《钢铁》2019年第10期96-102,共7页Iron and Steel

基　　金：武汉市应用基础研究计划资助项目(2016060101010071)

摘　　要：为实现除尘灰的资源化利用和铁水的有效预脱磷,尝试利用转炉二次除尘灰制备铁水脱磷剂具有现实意义。通过两种转炉二次除尘灰以不同比例替换纯脱磷剂中的有效成分进行脱磷试验,从而找到最佳的除尘灰替换比。试验结果表明,在使用除尘灰基脱磷剂后,两种脱磷剂的最高脱磷率分别达到52%和30%,脱磷终渣中P2O5活度系数明显降低,终渣磷容量显著增加,但磷分配比相对下降。另外,除尘灰基脱磷剂还具有较高的脱硅和脱硫效果,且最大脱除率均超过95%,这说明该脱磷剂能够同时实现铁水的预处理"三脱"作业,从而为除尘灰的二次利用提供了一条新的途径。In order to realize the resource utilization of dusting ash and the effective pre-dephosphorization of hot metal,it is of practical significance to try to prepare the hot metal dephosphorizer by using the converter secondary dedusting ash.The dephosphorization test was carried out by replacing the active ingredients in the pure dephosphorizer by different ratios of the converter secondary dedusting ash from two steel companies to find the best dusting ash replacement ratio.The test results show that the maximum dephosphorization rate of the two dephosphorizers is 52%and 30%respectively after using the dedusting ash-based dephosphorizers,the P2 O5 activity coefficient in the dephosphorization final slag is significantly reduced,and the final slag phosphorus capacity is significantly increased.However,the phosphorus distribution ratio is relatively low.In addition,the dusting ash-based dephosphorizer also has a high desiliconization and desulfurization effect,and the maximum removal rate were over 95%,which indicates that this dephosphorizer can simultaneously realize the pretreatment of the hot metal"three off"operation,and it provides a new way for the secondary utilization of dusting ash.

关 键 词：除尘灰 铁水 脱磷 脱硅 脱硫 

分 类 号：TF7[冶金工程—钢铁冶金]