中南大学学报（自然科学版）2011，Vol.42Issue(9)：2692-2697,6.
颗粒组分特性对扬矿硬管输送速度的影响
Influence of particles component properties on transporting speed in lifting pipeline
摘要
Abstract
The relationships between mineral component features and lifting speed were comprehensively studied. Theoretical analysis and experimental results show that the slip speed of single particle is its settling velocity. When the water flow speed continues to increase more than its settling velocity, the slip velocity slowly decreases. At the same level of particles gradation, the transport speed increases with the increase of the volume fraction. When it reaches a certain critical value, the growth rate slows down. Different particles gradation has different influences on volume fraction, large dominant particle size distribution requires large speed and small dominant particle size distribution needs smaller speed.关键词
垂直管道/颗粒级配/输送速度Key words
vertical pipes/ particles gradation/ transportation velocity分类
矿业与冶金引用本文复制引用
周知进,刘爱军,夏毅敏,唐达生..颗粒组分特性对扬矿硬管输送速度的影响[J].中南大学学报（自然科学版）,2011,42(9):2692-2697,6.基金项目
国家自然科学基金资助项目(50875081) （50875081）
中国博士后基金资助项目(200804409923) （200804409923）
湖南省科技支撑计划项目(2009SK3159) （2009SK3159）
