Experimental study on semi-industrial regrinding and re-separation of tailings in a gold mine
The ore of a gold mine is characterized by complexity,with severe sliming,high oxidation rate,fine gold particle size,and a variety of gold-bearing minerals in the raw ores.Combined with significant differences in hardness and dissociation,the ore belongs to a complex refractory gold ore.Despite a combination process of gravity separation+stage grinding and stage flotation,the average gold grade in the tailings remains 0.8 g/t,with most of the gold lost in encapsulated form.Utilizing an IsaMill machine and a microbubble flotation machine for efficient fine grinding and separation of the tailings has resulted in a concentrate grade of 16 g/t and a recovery rate of over 30%,meeting the separation indicators.Some of the research findings have already been applied in production,yielding significant eco-nomic benefits and providing an effective approach for the development and comprehensive utilization of complex refractory ores and tailings.
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