Study on Pre-Concentration and Calcium Removal of Low Grade Zinc Oxide Ore

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Abstract:

The zinc oxide sample from the Lanping mine located in the west of Yunnan province,China, is characterized with low grade, high calcium content, high oxidation rate and heavy slime. According to the properties of the ore, a new dressing-metallurgy combined method is proposed to process the ore and the beneficiation part is discussed by this paper. Based on the regulation of reagent scheme, flotation flowsheet of pre-desliming and two rougher is conducted to obtain a zinc concentrate that Zn grade is 18.72% at Zn recovery of 90.88%. The calcium removal rate of zinc concentrate reaches to as high as 78.15% for the flotation operation, which could lay the foundation for the next acid leaching process.

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830-833

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April 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] K.Salazar, M.K. Mcnutt, Mineral Commodity Summaries 2010[M].Washington:United States Government Printing Office,2010,184~185

Google Scholar

[2] Li Mingxiao, New process of dressing-metallurgy combination with refractory zinc oxide ore of low grade based on circular economy, PhD Thesis of Kunming University of Science and Technology, 2011 [in chinese]

Google Scholar

[3] Salum, M.J.G., de Araujo, A.C., The role of sodium sulphide in amine flotation of silicate zinc minerals, Minerals Engineering, 5 (1992) 411–419

DOI: 10.1016/0892-6875(92)90220-4

Google Scholar

[4] A.H. Navidi Kashani, F. Rashchi, Separation of oxidized zinc minerals from tailings: Influence of flotation reagents, Minerals Engineering, 21 (2008) 967–972

DOI: 10.1016/j.mineng.2008.04.014

Google Scholar