F、K、Na对烧结固相反应影响的研究  

Study on Influence of F,K and Na on Solid Phase Reaction of Sintering Process

作　　者：王艺慈[1] 罗果萍[1] 柏京波[1] 郝志忠[2] 邬虎林[3] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]包头钢铁(集团)公司炼铁厂,内蒙古包头014010 [3]包头钢铁集团公司技术中心,内蒙古包头014010

出　　处：《钢铁》2008年第7期12-15,共4页Iron and Steel

基　　金：国家自然科学基金资助项目(50664006)

摘　　要：采用差热分析(DTA)与X射线衍射(XRD)相结合的方法,研究了高碱度烧结矿中F、K、Na对烧结固相反应开始温度与最初形成产物的影响规律,研究结果表明:烧结原料中F、K、Na的存在,促进了烧结固相反应过程中低熔点化合物硅酸钠、铁酸钠、枪晶石的形成,固相反应过程中硅酸钠自702℃,铁酸钠自780℃,枪晶石自900℃开始合成,从而探明了F、K、Na在烧结固相反应过程中的行为规律。The influence of F,K,Na on start temperature and initial product of solid phase reaction in high basicity sinter was studied by means of differential thermal analysis（DTA） and X-ray diffraction（XRD）. The results show that F,K,Na in burden accelerated the formation of low melting corhpounds such as sodium silicate, sodium ferrite, cuspidine. SiO2 started reaction with Na2O to form sodium silicate at 702 ℃, Fe2O3 started reaction with Na2O to form sodium ferrite at 780 ℃, and cuspidine started to be formed from CaO,SiO2 and CaF2 at 900 ℃. The behavior of F,K,Na during solid phase reaction of sintering process was clarified.

关 键 词：烧结固相反应 固相反应开始温度 最初形成产物 

分 类 号：TF046.4[冶金工程—冶金物理化学]