Effects of process parameters on the growth behavior and granule size distribution of iron ore mixtures in a novel high-shear granulator

作     者：Yang You Jiabao Guo Gang Li Zhuang Zheng Yong Li Xuewei Lü Yang You;Jiabao Guo;Gang Li;Zhuang Zheng;Yong Li;Xuewei Lü

作者机构：College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium–Titanium Metallurgy and New MaterialsChongqing UniversityChongqing 400044China 

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：2022年第29卷第12期

页      面：2152-2161页

核心收录：

学科分类：0819[工学-矿业工程] 081902[工学-矿物加工工程] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51974048 and 52004046) the China Postdoctoral Science Foundation (Nos. 2021T140783 and 2020M673131) the Postdoctoral Science Foundation of Chongqing (No. cstc2020jcyj-bsh X 0030) 

主　　题：horizontal high-shear granulation iron ore granule structure granulation performance size distribution 

摘      要：This work proposes a novel horizontal high-shear granulator for iron ore granulation before sintering process.The granulation behavior such as growth process and structure of granules were firstly analyzed,followed by the effects of operation conditions such as water content,initial particle size distribution,and the concentrate ratio.The results show that the granule size increased significantly with increasing the granulation time,and the structure of granule can be divided into three types:non-nuclei,single-nuclei,and multi-nuclei.Water promotes the coalescence and growth of particles,and a better granulation performance was obtained at the water content of 8.8wt%under the current raw material conditions.Increasing the nuclei particle ratio led to an increase in average size of granules and permeability of the granules bed,but a decrease in growth index.Besides,with increasing of concentrate ratio,granulation performance such as granule size,bed permeability,and uniformity became worse.