A phenomenological description of moisture capacity of iron ores

作     者：Xuewei Lv Qiugang Yuan Chenguang Bai Xiaobo Huang Lei Lei 

作者机构：School of Materials Science and EngineeringChongqing University 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2012年第10卷第6期

页      面：692-698页

核心收录：

学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 

基　　金：the Fundamental Research Funds for the Central Universities (Grant No. CDJRC10130009) National Natural Science Foundation of China (Grant No.51104192) 

主　　题：Mathematical modelIron oreMoisture capacityWater contentGranulation 

摘      要：Moisture capacity of iron ore, defined as its ability to hold water, has been found to be attected by Its particle size and chemical composition. To explain this phenomenon, mathematical model was developed on the basis of particle size, specific surface area, pore properties and contact angle between the iron ore and water. The specific surface area and the pore volume of iron ores were measured to validate the model, and parametric studies were carried out to investigate the effects of these factors, showing that particle size and surface area of the iron ore and thickness of the water film are the principal factors determining the moisture capacity. The model gave reasonable explanation of the phenomenon that moisture capacity increases with decreasing particle size. A correlation developed can well predict the moisture capacity of iron ores. Deviations between measurements and calculations were analyzed.