Blended coals for improved coal water slurries

作     者：GU Tian-ye WU Guo-guang LI Qi-hui SUN Zhi-qiang ZENG Fang WANG Guang-you MENG Xian-liang 

作者机构：School of Chemical Engineering and Technology China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China 

出 版 物：《Journal of China University of Mining and Technology》 (中国矿业大学学报（英文版）)

年 卷 期：2008年第18卷第1期

页      面：50-54页

核心收录：

学科分类：081901[工学-采矿工程] 0808[工学-电气工程] 0819[工学-矿业工程] 08[工学] 0820[工学-石油与天然气工程] 0817[工学-化学工程与技术] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0827[工学-核科学与技术] 0813[工学-建筑学] 0802[工学-机械工程] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Projects 20060290506 supported by the Doctoral Foundation of the Chinese Education Ministry 2005B013 by the Science and TechnologyFoundation of China University of Mining & Technology 

主　　题：low rank coal coal water slurry coal blending slurryability zeta potential 

摘      要：Three coal samples of different ranks were used to study the effect of coal blending on the preparation of Coal Water Slurry (CWS). The results show that by taking advantage of two kinds of coal, the coal concentration in slurry made from hard-to-pulp coal can be effectively improved and increased by 3%–5% generally. DLT coal (DaLiuTa coal mine) is very poor in slurryability and the stability and rheology of the resulting slurry are not very good. When the amount of easily slurried coal is more than 30%, all properties of the CWS improve and the CWS meets the requirements for use as fuel. Coalification, porosity, surface oxygenic functional groups, zeta potential and grindability have a great effect on the performance of blended coal CWS. This leads to some differences in performance between the slurry made from a single coal and slurry made from blended coal.