Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第20卷    第3期    总第132期    2010年3月

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文章编号:1004-0609(2010)03-0557-08
旋流浮选器在铝土矿反浮选中的应用
孙  伟,耿志强,易  峦,高志勇,刘建东

(中南大学 资源加工与生物工程学院,长沙 410083)

摘 要: 为了解决铝土矿反浮选中微细粒浮选的难题,设计出一种旋流浮选器,利用流体动力学理论,通过模拟计算,建立旋流浮选器中铝土矿的分离粒度模型,推导出旋流浮选器应用于铝土矿反浮选的理论依据。对河南某铝土矿进行旋流浮选器浮选实验研究。结果表明:通过优化调整旋流浮选器的条件参数,不预先脱泥直接进行铝土矿反浮选,最终获得满足拜耳法对铝土矿生产要求的一水硬铝石精矿,精矿中平均A/S为8.38,回收率为85.16%。

 

关键词: 铝土矿;反浮选;旋流浮选器;分离粒度

Application of air-sparged hydrocyclone in
reverse flotation of bauxite
SUN Wei, GENG Zhi-qiang, YI Luan, GAO Zhi-yong, LIU Jian-dong

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

Abstract:In order to resolve the problem of fine particle flotation in the reverse flotation of bauxite, a new type of air-sparged hydrocyclone was designed, through accurate analog computation based on hydrodynamics theory.       The theoretical foundation was deducted for the application of air-sparged hydrocyclone in the bauxite reverse flotation. The flotation tests of air-sparged hydrocyclone aiming at a bauxite from Henan province were studied. The results show that a diaspore concentrate directly used in the Bayer-mineral processing method can be obtained by optimizing the parameters of the hydrocyclone without pre-desliming. The average A/S of the concentrate is 8.38 with a recovery rate of 85.16%.

 

Key words: bauxite; reverse flotation; air-sparged hydrocyclone; separation size

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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