F、K、Na对烧结固相反应影响的研究

钢铁, 2008, 43(7): 12-0.

F、K、Na对烧结固相反应影响的研究

1.1. 内蒙古科技大学材料与冶金学院, 内蒙古包头 014010

2.2. 包头钢铁（集团）公司炼铁厂, 内蒙古包头 014010

3.3. 包头钢铁（集团）公司技术中心, 内蒙古包头 014010

1.1. College of Material and Metallurgy, Inner Mongolia University of Science and Technology， Baotou 014010， Nei Monggol， China；2. Iron Plant, Baotou Iron and Steel（Group）Co, Baotou 014010, Nei Monggol， China；3. Technical Center, Baotou Iron and Steel（Group）Co, Baotou 014010, Nei Monggol， China

关键词：烧结固相反应;固相反应开始温度;最初形成产物

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

WANG Yici , LUO Guoping , BAI Jingbo , HAO Zhizhong , WU Hulin

Keywords： solid phase reaction of sintering process;start temperature;initial product

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 compounds 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.

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