Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process

作     者：Dong-hui Liu Hao Liu Jian-liang Zhang Zheng-jian Liu Xun Xue Guang-wei Wang Qing-feng Kang 

作者机构：School of Metallurgy and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China Xuanhua Iron&Steel Group Co.Ltd.Xuanhua 075100China Beijing Shenwu Environment&Energy Technology Co.Ltd.Beijing 102200China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2017年第24卷第9期

页      面：991-998页

核心收录：

学科分类：080602[工学-钢铁冶金] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Basic Research Program of China (No. 2012CB720401) the National Natural Science Foundation of China (U1260202) 

主　　题：iron ore concentrate limonite basic characteristics sinter properties sintering process 

摘      要：The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot methods. The results show that the Ore-A exhibits good granulation properties, strong liquid flow capability, high bonding phase strength and crystal strength, but poor assimilability. With increasing Ore-A ratio, the tumbler index and the reduction index (RI) of the sinter first increase and then decrease, whereas the softening interval (Delta T) and the softening start temperature (T (10%)) of the sinter exhibit the opposite behavior; the reduction degradation index (RDI+3.15) of the sinter increases linearly, but the sinter yield exhibits no obvious effects. With increasing Ore-A ratio, the distribution and crystallization of the minerals are improved, the main bonding phase first changes from silico-ferrite of calcium and aluminum (SFCA) to kirschsteinite, silicate, and SFCA and then transforms to 2CaO center dot SiO2 and SFCA. Given the utilization of Ore-A and the improvement of the sinter properties, the Ore-A ratio in the high-limonite sintering process is suggested to be controlled at approximately 6wt%.