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(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 28    No. 1    January 2018

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Selective flotation of smithsonite, quartz and calcite using alkyl diamine ether as collector
Hai-ling ZHU1,2, Wen-qing QIN2, Chen CHEN2, Li-yuan CHAI1, Lai-shun LI2, San-jun LIU2, Ting ZHANG2

1. School of Metallurgy and Environment, Central South University, Changsha 410083, China; 2. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

Abstract:The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether (GE-609) as the collector was investigated through micro-flotation experiments and the real ore flotation experiments. The results show that GE-609 exhibits good collecting capability to three minerals without selectivity. The presence of sodium sulfide enhances the flotation of smithsonite and calcite while inhibits quartz. Moreover, both sodium silicate and sodium hexametaphosphate exhibit good selective inhibition to calcite. The real ore test results show that a zinc concentrate containing 23.51% Zn with the recovery of 71.02% is obtained in the closed-circuit test. To understand the adsorption of GE-609 on smithsonite surface, zeta potential measurement and FTIR analysis were carried out, and the results indicate that the collector GE-609 can adsorb on smithsonite surface through both electrostatic adsorption and chemical adsorption, and the presence of sodium sulfide enhances the adsorption of GE-609.

 

Key words: smithsonite; quartz; calcite; alkyl diamine ether; sodium sulfide; sulphidization flotation

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

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

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