高磷赤铁矿烧结气化脱磷的试验研究  

Experimental Study on High- phosphorus Hematite Gasification Dephosphorizing in Sintering Process

作　　者：付俊凯 张伟 邢宏伟 田铁磊 王辉 刘卫星 

机构地区：[1]华北理工大学冶金与能源学院,河北省现代冶金技术重点实验室,河北唐山063009

出　　处：《钢铁钒钛》2016年第2期97-101,共5页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金资助项目(51274081)

摘　　要：采用小球烧结方法研究不同因素对高磷赤铁矿烧结气化脱磷的影响。结果表明:气化脱磷反应主要是气固相反应的过程。在弱氧化气氛条件下,高磷赤铁矿的气化脱磷率随反应温度升高、碱度降低、恒温时间延长而增加。在脱磷剂加入量6.8%的条件下,比较适宜的气化脱磷工艺参数为配碳4%、反应温度1 250℃、碱度1.2、恒温时间30 min,此时气化脱磷率达到了23.8%。并对最终焙烧产物进行了XRD微观检测分析,证实了气化脱磷反应的发生。The effects of various factors on high- phosphorus hematite gasification dephosphorizing in sintering process were studied through pellet sintering. The results show that gasification dephosphorizing is mainly a gas- solid phase reaction process. Under low oxidizing atmosphere,the rate of high- phosphorus hematite gasification dephosphorizing increases when the increasing reaction temperature,reducing the basicity and extending the holding time. When the the content of dephosphorization agent is 6. 8%,the optimal gasification dephosphorizing process parameter are as follows： carbon content 4%,reaction temperature 1 250 ℃,basicity 1. 2,reaction holding time 30 min,and the resulting gasification dephosphorization rate can reach 23. 8%. XRD microscopic detection on the finally calcined product confirmed the occurrence of gasification dephosphorization reaction.

关 键 词：烧结 高磷赤铁矿 气化脱磷 脱磷剂 

分 类 号：TF046.4[冶金工程—冶金物理化学]