中南大学学报（自然科学版）2024，Vol.55Issue(3)：871-881,11.DOI:10.11817/j.issn.1672-7207.2024.03.003
镍闪速熔炼过程数值仿真
Numerical simulation of nickel flash melting process
摘要
Abstract
Numerical simulation software was used to study the velocity,temperature and concentration of the gas phase in the flash furnace of a large nickel plant in China,as well as the velocity and temperature distribution characteristics of particles of different particle sizes.The results show that after simulation by COMSOL software,the mixed gas stream injected by the nozzle expands after entering the furnace,it forms a vortex in the flash furnace,and moves towards the upper part of the reactor tower and causes backflow.The oxidation reaction mainly occurs in the area of 1.2 m radius from the center of the tower,and the oxidation reaction is basically completed at 5.59 m from the top of the tower.The oxygen is not completely consumed and the oxygen volume fraction at the outlet of the precipitation tank is 7.70%.There is a local high temperature region below the nozzle and in the middle and lower part of the reaction tower,and a low temperature region in the middle and upper part of the reaction tower.The small particle size mixture particles are affected by the gas to a greater extent than the large particle size mixture particles and reach a greater maximum velocity.And due to the low ignition point,the temperature increases faster.The melting reaction is more effective when the mixture particle size is controlled between 60-80 μm.关键词
镍闪速熔炼/数值模拟/分布特性/反应塔Key words
nickel flash melting/numerical simulation/distribution characteristics/reaction tower分类
矿业与冶金引用本文复制引用
陈爱良,王子彪,刘瑶,何利华,张希军,刘福林,卢苏君,HWANG Jiann-Yang,孙丰龙..镍闪速熔炼过程数值仿真[J].中南大学学报（自然科学版）,2024,55(3):871-881,11.基金项目
国家重点研发计划项目(2022YFC3902001) （2022YFC3902001）
国家自然科学基金资助项目(52374363,52004340) （52374363,52004340）
甘肃科技重大专项(22ZD6GC018)(Project(2022YFC3902001)supported by the National Key Research and Development Program （22ZD6GC018）
Projects(52374363,52004340)supported by the National Natural Science Foundation of China （52374363,52004340）
Project(22ZD6GC018)supported by Gansu Innovation-Driven Development Program) （22ZD6GC018）
