窄粒级给矿条件下水力旋流器结构优化  

Structural optimization of hydrocyclone with narrow feed size

作　　者：侯天瑞 魏德洲[1] 张朔 崔宝玉[1] HOU Tian-rui;WEI De-zhou;ZHANG Shuo;CUI Bao-yu(School of Resources and Civil Engineering,Northeastern University,Shenyang 110000,Liaoning,China)

机构地区：[1]东北大学资源与土木工程学院,沈阳110000

出　　处：《矿冶》2022年第3期126-131,共6页Mining And Metallurgy

基　　金：国家自然科学基金资助项目(51874075,52174244)。

摘　　要：针对齐大山铁矿选矿厂二次分级作业因窄粒级给矿而导致的分级效率低的问题,在对现场水力旋流器系统考查的基础上,通过数值模拟方法,深入地研究了水力旋流器结构参数对分级效果的影响。结果表明:进料体结构改为螺旋线进料体,底流口直径由152 mm改为110 mm,溢流口直径200 mm保持不变,复合锥角为中锥锥角12°、小锥锥角20°,新结构旋流器分级效率较现场旋流器提高了7.37个百分点。新结构水力旋流器有效改善了齐大山铁矿选矿厂二次分级效率低的问题,结果可为同类型矿山水力旋流器结构优化提供参考。Aiming at the problem of low classification efficiency caused by narrow ore feeding in secondary classification of Qidashan Iron Concentrator,the influence of structure parameters of hydrocyclone on classification effect was studied deeply by numerical simulation method on the basis of field hydrocyclone system examination.The results show that the feed body structure is changed to spiral feed body,the diameter of bottom flow port is changed from 152 mm to 110 mm,the diameter of overflow port remains unchanged at 200 mm,the compound cone angle is 12°for the middle cone and 20°for the small cone,and the classification efficiency of the new structure is increased by 7.37 percentage points compared with that of the field cyclone.The new structure of hydrocyclone can effectively improve the low efficiency of secondary classification in Qidashan Iron Concentrator,and provide reference and basis for the structure optimization of hydrocyclone in the same type of mine.

关 键 词：水力旋流器 数值模拟 窄粒级给矿 螺旋线进料体 复合锥角 

分 类 号：TD951[矿业工程—选矿] TD455