文献类型：期刊文献

英文题名：Theoretical and experimental investigation on angle of repose of biomass-coal blends

作者：Guo, Zhiguo;Chen, Xueli;Liu, Haifeng[1];Guo, Qiang;Guo, Xiaolei;Lu, Haifeng

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2014

卷号：116

起止页码：131

外文期刊名：FUEL

收录：;EI(收录号：20133616696562);WOS:【SCI-EXPANDED(收录号:WOS:000326943400019)】；

基金：This study was supported by the National Key Technologies R&D Program (2012BAA09B02), the National Natural Science Foundation of China (21176079), the National Development Programming of Key Fundamental Researches of China (2010CB227005), the Fundamental Research Funds for the Central Universities, and Program for New Century Excellent Talents in University (NCET-12-0854).

语种：英文

外文关键词：Angle of repose; Secondary particle; Base particle; Biomass-coal blends

摘要：The angle of repose of granular materials has been extensively studied, for it is a very important macroscopic parameter in characterizing the flowability of granular materials. The primary objective of the work is to develop a linear model, and to propose a quantitative expression about the angle of repose (Phi(R)) of mixed granular system, which gives a qualitative understanding of the influence of physical parameters on mixed granular flow behavior. The results show that the variation amplitude of tangent Phi(R) is linear with the related particle physical properties (density, particle size and secondary particle mass fraction). It is shown that the most important parameters determining the mixed granular system angle of repose are density variation and surface roughness for the similar particle size. In addition, whether the particle size of base particle material or secondary particle varies or not, the linear relationship always exists. And the slope k is determined primarily by particle shape and surface friction coefficient. (C) 2013 Elsevier Ltd. All rights reserved.