Technology of Placer Mining‘s Waste Processing

Individual development of man-caused wastes with small stocks (or reserves) is not profitable as a result of a small amount of gold produced, which is insufficient to recover the capital and operational costs. To reduce costs, the production capacity of the enterprise is increased by considering the reserves of primary ores of the operating enterprise and man-caused wastes as concurrently developed section of one large field with a common (synergetic) economic effect. Technologically co-processing of gold-bearing raw materials consists in the fact that gold extracted from technogenic sands by method of gravitational enrichment is used as the carrier mineral when extracting smalls and fine gold from primary ores by flotation. In flotation a mixture of air and hot water vapor as the gs phase. The extraction of the gold flotation complex takes place according the most efficient mechanism – with the participation of the hydrophobic interaction forces, which makes it possible to increase the throughput by 5.27 %.

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