铁矿粉的烧结基础特性及最佳配矿试验研究  

Experimental study on basic sintering characteristics and optimum ore blending scheme of iron ore powder

作　　者：任强 王艺慈[1] 罗果萍[1] 田硕 柴轶凡[1] 宋巍[1] Ren Qiang;Wang Yici;Luo Guoping;Tian Shuo;Chai Yifan;Song Wei(School of Materials and Metallurgy,Inner Mongolia University of Science&Technology,Baotou 014010,Inner Mongolia)

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

出　　处：《烧结球团》2020年第2期26-30,共5页Sintering and Pelletizing

基　　金：内蒙古自治区自然科学基金资助项目(2018LH05026);国家自然科学基金资助项目(51664045);国家青年科学基金资助项目(51904161);内蒙古自治区高等学校科学研究资助项目(NJZY20091)。

摘　　要：为了探索某钢厂所用铁矿粉的最佳配矿方案,采用微型烧结试验装置对铁矿粉进行烧结基础特性及其影响因素研究,并对铁矿粉以不同配比搭配寻找最佳配矿方案。结果表明:B矿粉具有较好的同化能力和较高的液相流动性,而A矿粉具有较好的铁酸钙生成特性和较高的粘结相强度;铁矿粉中MgO、Fe2O3、CaO、SiO2和结晶水质量分数等是影响铁矿粉烧结基础特性的主要因素;在考虑铁矿粉成本的条件下得出这两种铁矿粉的最佳配矿方案,即A∶B为2∶8时,混合矿粉的综合性能最好。在最佳配矿条件下混合矿粉的同化温度最低、液相流动性指数最高、铁酸钙生成能力较好、粘结相强度较高、价格最低,相应数值分别为1190℃、3、22.49%、0.859 kN/P、537.91元/t。In order to explore the best blending scheme of iron ore powder used in a steel plant,the basic sintering characteristics and influencing factors of iron ore powder are studied by using a micro sintering test device,and the best ore blending scheme is found by using different proportion of iron ore powder.The results show that B ore powder has better assimilation ability and higher liquid phase fluidity,while A ore powder has better calcium ferrite formation characteristics and higher binding strength;MgO,Fe2O3,CaO,SiO2 and mass fraction of crystal water in iron ore powder are the main factors affecting its basic sintering characteristics;the optimal blending scheme of these two kinds of iron ore powder is obtained considering its cost.The comprehensive performance of iron ore powder is the best when A∶B is 2∶8.Under the optimum ore blending conditions,the assimilation temperature of the mixed ore powder is the lowest,the fluidity index of liquid phase is the highest,the ability of producing calcium ferrite and the strength of binding phase is higher,the price is the lowest.The corresponding values are 1190℃,3,22.49%,0.859 kN/P,537.91 yuan/t,respectively.

关 键 词：铁矿石 烧结基础特性 影响因素 优化配矿 

分 类 号：TF046.4[冶金工程—冶金物理化学]