摘要
在分析多种褐煤无黏结剂成型假说的基础上,提出了影响褐煤成型特性的其他内因。介绍了褐煤无黏结剂成型的粉体力学模型,同时对无桥、液桥、固桥3种黏结类型下的平均颗粒抗拉强度的计算公式进行了推导。探讨了在褐煤成型过程中,不同阶段相应的主要黏结力,并得出褐煤型煤最终产品的强度取决于颗粒间形成的固桥黏结力。研究表明:确定合理的外部条件,使颗粒间形成合适的固桥黏结力,即可满足褐煤运输和加工利用所需强度。
Based on the analysis of many lignite binderless moulding hypotheses, find that there are other internal causes influencing the lignite molding characteristics. Introduce the powder mechanics model of lignite binderless moulding. Deduce the average particle calculation formula of tensile strength under the bond types of binderless, liquid-bridge and solid-bridge. Investigate the main bond forces in different stages of lignite molding and corresponding. The strength of the final product depends on the bond stress between particles, which provides strength for lignite transportation and processing.
出处
《洁净煤技术》
CAS
2013年第5期50-53,共4页
Clean Coal Technology
关键词
褐煤
成型
粉体力学
固桥黏结力
lignite
moulding
powder mechanics
solid-bridge bond stress
