Author:
MIAO Long,NIE Mingqing,GRISHIN Yuri Mihailovich,WANG Xiaoyu,ZHU Zhengxi,SONG Jiahui,LIANG Fuwen,HE Zihao,TIAN Feng,WANG Ningfei
Abstract
Abstract
In the present work, the turbulent mixing process of a polydisperse quartz particle flow with a plasma stream generated by a radio-frequency (RF) inductively coupled plasma torch was numerically studied. The thermobaric stress in the quartz particles under dynamic heating in a heterogeneous plasma flow was determined by a two-stage approximation approach. The effect of the presence of vacuoles in natural quartz on the particle thermobaric destruction conditions was studied. It was found that the equivalent thermal and baric stresses in quartz particles may significantly increase in the presence of vacuoles within a small gas volume fraction. The influence of the regime and energetic working conditions of an RF inductively coupled plasma torch system on the particle thermobaric destruction conditions was examined, and a recommendation was given to promote the degree of thermobaric destruction of quartz particles, which is of substantial importance for improving the overall enrichment efficiency of quartz concentrates.
Funder
Science Foundation for Youth Scholars of the Beijing Institute of Technology
Advanced Space Propulsion Laboratory of BICE and the Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology
National Key R&D Program of China
China Postdoctoral Science Foundation
National Natural Science Foundation of China