摘要
为了研究浮选机内气泡特征参数与成泡机理,探索气泡可控机理和流场稳化模型,设计出一种新型射流-搅拌耦合式煤泥浮选装置,并从气泡生成机理的角度对装置进一步设计和优化,在流场稳化机理方面进行了相关结构参数和工况参数的研究。试验结果表明,随着压力和管嘴距的增加,气泡粒径减小,粒径分布集中度提高,分布趋于均匀;射流冲击段的气泡粒径较小,对气泡粒径的调控能力较弱。
In order to investigate the characteristic parameters of bubbles and bubble formation and control mechanisms,and develop the model of stabilization of flow field in flotation cell,a novel Jet-stirring integrated fine coal flotation device is developed.Optimum design of the device and the study of related structural and operating parameters are made respectively form the perspective of bubble formation mechanism and flow field stabilization mechanism.Test result shows that:with the increase of pressure and the spacing between the outlet of inner nozzle tube and the outlet of outer nozzle tube,the bubbles are seen to decrease in size with a highly concentrated and more uniform size distribution;the bubbles in Jet impinging section are relatively small in size with a reduced bubble size control capability.
作者
张勇
朱金波
周伟
冯岸岸
王海楠
韩有理
王超
费之奎
ZHANG Yong;ZHU Jinbo;ZHOU Wei;FENG An′an;WANG Hainan;HAN Youli;WANG Chao;FEI Zhikui(School of Materials Science&Engineering,Anhui University of Science&Technology,Huainan 232001)
出处
《选煤技术》
CAS
2018年第5期38-42,共5页
Coal Preparation Technology
基金
国家自然科学基金项目(51374015)
关键词
浮选煤泥
浮选装置
吸气特性
气泡粒径
fine coal flotation
flotation device
characteristics if suction
bubble size
