Beneficiation Experimental Study on Comprehensive Recovery of a Copper-Gold-Silver-Sulfur Polymetallic Ore
Received:June 28, 2020  Revised:July 06, 2020
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DOI:doi:10.3969/j.issn.1671-9492.2021.03.014
KeyWord:Polymetallic;ore, Secondary;copper, Associated;gold and;silver, regrinding, copper-sulfur;separation
           
AuthorInstitution
Chendujuan Northwest Research Institute of Mining & Metallurgy
guohaining Northwest Research Institute of Mining & Metallurgy
MIAO Liang Northwest Research Institute of Mining & Metallurgy
LI Fulan Northwest Research Institute of Mining & Metallurgy
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Abstract:
      The valuable elements that can be comprehensively recycled from a polymetallic ore in Gansu province are copper, gold, silver and sulfur. According to the characteristics of high secondary copper content, close copper-sulfur intercalation and fine particle size of useful minerals, the experimental research adopts the process flow of “copper-sulfur mixed flotation-coarse concentrate regrinding –copper-sulfur separation” and the new reagent ester -11 ,which obtains not only the copper concentrate with copper grade of 19.05%, copper recovery rate of 90.07%, gold grade of 7.46g/t, gold recovery rate of 60.43%, silver grade of 42.00g/t, silver recovery rate of 41.20% ,but also the sulfur concentrate with sulfur grade of 41.28% and sulfur recovery rate of 62.22%. It provides technical basis for comprehensive recovery of the ore.
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