搅拌叶轮尺寸对双叶轮浮选机性能的影响  

Influence of size of stirring impeller on performance of dual-impeller flotation machine

作　　者：随婕斐 李智力[1] 何东升[1] 田承涛 邓杰[3] 唐远 张泽强[1] SUI Jiefei;LI Zhili;HE Dongsheng;TIAN Chengtao;DENG Jie;TANG Yuan;ZHANG Zeqiang(School of Resources&Safety Engineering,Wuhan Institute of Technology,Wuhan 430074,Hubei,China;Hubei Sanning Chemical Industry Co.,Ltd.,Yichang 443200,Hubei,China;Institute of Comprehensive Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,Sichuan,China)

机构地区：[1]武汉工程大学资源与安全工程学院,湖北武汉430074 [2]湖北三宁化工股份有限公司,湖北宜昌443200 [3]中国地质科学院矿产综合利用研究所,四川成都610041

出　　处：《矿山机械》2021年第11期35-39,共5页Mining & Processing Equipment

基　　金：国家重点研发计划项目(2019YFC1905801);湖北省尾矿(渣)资源化利用工程技术研究中心项目(2019ZYYD070);湖北省技术创新专项(对外科技合作类)(2019AH056);武汉工程大学研究生创新基金项目资助(CX2020359)。

摘　　要：通过对常规机械搅拌式浮选机进行改造,将其搅拌系统设计为 2 个转子 (离心叶轮和搅拌叶轮) 配 1 个定子的结构模式,开发了双叶轮浮选机。为了考察搅拌叶轮直径对双叶轮浮选机性能的影响,试验设计了直径为 32、34 和 36 mm 的搅拌叶轮,考察了直径对充气性能、悬浮性能和分选性能的影响。试验表明:浮选机的充气、悬浮和分选性能,与搅拌叶轮的结构特征和浮选机的转速有关。随着转速的增加,充气量越来越大,固体颗粒悬浮质量分数越来越小,而分选效率先增大后减小;在实验室现有搅拌叶轮尺寸条件下,叶轮直径为 36 mm 时,充气、悬浮和分选效果都达到最佳状态。The conventional mechanical stirring flotation machine was reconstructed to the dual-impeller flotation machine whose stirring system involved two rotors (centrifugal impeller and stirring impeller) and one stator.In order to research the influence of the diameter of the stirring impeller on the performance of the dual-impeller flotation machine,the stirring impellers whose diameter individually being 32,34 and 36 mm were designed for the test,so as to research the influence of the diameter of the stirring impeller on the aeration performance,suspension performance and separation performance of the flotation machine.Test results showed:the aeration,suspension and separation performance of the flotation machine were correlated with structural features of the stirring impeller and rotary speed of the flotation machine;with the increase in the rotary speed,the aeration appeared an increasing volume,and the suspending concentration of solid particles became lower,while the separation efficiency first increased and then decreased;among the current size of the stirring impeller in lab,the aeration,suspension and separation effects were the best with the impeller whose diameter being 36 mm.

关 键 词：浮选机 搅拌叶轮 叶轮尺寸 充气性能 悬浮性能 分选性能 

分 类 号：TD454[矿业工程—矿山机电]