雾化焙烧制备超细颗粒用旋风分离器优化模拟  

Optimized simulation of cyclone separator for preparation of ultrafine particles by atomization roasting

作　　者：伍永福[1] 栗志 张学锋 王振峰 刘中兴[2] WU Yongfu;LI Zhi;ZHANG Xuefeng;WANG Zhenfeng;LIU Zhongxing(Faculty of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou 014000,China;Faculty of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014000,China;Shanxi North Hengtong Power System Co.,Ltd.,Datong 037000,China;Clean Extraction and Application of Light Rare Earth Engineering Research Center of Inner Mongolia Autonomous Region,Baotou 014010,China)

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014000 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014000 [3]山西北方恒通动力系统有限公司,山西大同037000 [4]轻稀土清洁提取与应用内蒙古自治区工程研究中心,内蒙古包头014010

出　　处：《中国粉体技术》2023年第6期39-49,共11页China Powder Science and Technology

基　　金：国家自然科学基金项目,编号:51964039;内蒙古自治区自然科学基金项目,编号:2022LHMS05004;内蒙古自治区应用技术研究与开发资金项目,编号:2021GG0103;白云鄂博稀土资源研究与综合利用国家重点实验室开放基金资助项目,编号:2021H2275;企业课题:稀土萃取液直接制备稀土抛光材料。

摘　　要：旋风分离器是雾化焙烧制备稀土氧化物工艺中的常用分离设备之一。为了提高焙烧产物中超细颗粒的分离效率,采用Fluent数值模拟和实验验证相结合的方法,得到旋风分离器的优化构型,利用颗粒分离效率和流体压降2项指标进行评价,以探讨扩张结构旋风分离器的优化效果。结果表明:在锥筒高度为距旋风分离器顶板370 mm处,进行角度为10°的扩张改进后,分离器对粒径为1、3、5μm的颗粒分离效率分别提高13.25%、42.33%、44.02%,阻力系数减小3.6%;新改进结构旋风分离器在降低能耗的同时提高分离效率。Cyclone separator is one of the commonly used separation equipment in the process of preparing rare earth oxides by atomization roasting.In order to improve the separation efficiency of ultrafine particles in the calcinated products,Fluent numerical simulation and experimental verification were combined to obtain the optimal configuration of the cyclone separator.The particle separation efficiency and fluid pressure drop were evaluated to explore the optimization effect of the expanded structure cyclone.The results show that the separation efficiency of 1,3 and 5μm particles is increased by 13.25%,42.33%and 44.02%,respectively,and the drag coefficient is reduced when cone height is 370 mm away from cyclone top plate and the Angle of expansion improvement is 10°.The cyclone separator of new improved structure can reduce energy consumption and improve the separation efficiency.

关 键 词：雾化焙烧 旋风分离器 超细颗粒 数值模拟 

分 类 号：TB44[一般工业技术] TQ051.8[化学工程]