Flotation Behavior of Jinchuan High Grade Copper-Nickel Sulphide with the Action of Different Regulators

Abstract:

The useful minerals of Jinchuan high-grade copper and nickel suphfide ores were mainly nickel and copper, whose grade were respectively 1.42% and 1.01%. The content of MgO and SiO₂, main gangue components, reached 57.89%. The key to improve the separation indexes of flotation concentrate was to inhibit the gangue minerals effectively, therefore, the effects of different kinds of regulators on Jinchuan high grade copper-nickel ores by flotation were studied. Considering the grade and recovery of concentrate comprehensively, the optimal regulator of mineral flotation was determined to be the combination of sodium hexametaphosphate and citric acid, and the dosage were 300g/t and 500g/t, respectively. After analyzing the mechanism of the two regulators, the combined reagents could reduce the isoelectric point of gangue minerals, decreasing the adsorption between gangue minerals and valuable minerals. In addition, the reagents were able to eliminate the activation of useless ions such as Ca²⁺ and Ni²⁺ on the gangue minerals and improve the ion composition of pulp, increasing the difference of floatability between gangue and useful minerals.

• Periodical: Advanced Materials Research (Volume 826)
• Pages: 61-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.826.61
• Online since: November 2013
• Authors: Shuai Ping Shen*, Zhi Tao Yuan, Li Xia Li, Shuo Zhu
• Keywords: Copper-Nickel Suphfide, Mechanism, Regulator, Serpentine

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