Japan’s Chitose Gold and Silver Mine is a shallow hydrothermal filling gold-silver deposit. Metal ore minerals natural gold, argentite, magenta silver, pink silver, brittle silver, silver stibnite, chalcopyrite, galena, pyrite. In addition to natural gold, gold is also accessed in the inclusion of pyrite, with gold particles ranging from 10 to 50 microns and from 100 to 150 microns. The gangue is mainly quartz , chlorite, feldspar , calcite and the like. When the mine treats the sulfide ore, it is recovered by a single flotation method; if the high-grade ore oxide is treated, the coarse-grained gold is recovered by the re-election method (slot), and the silver is recovered by flotation, and when the effect is not good, it is available. The cyanidation process recovers part of the gold and silver.
Production index: 45 g of silver ore selected / t gold 18.80 g / t; reselection silver concentrate containing 1641.8 g / t gold 2529.5 g / t; heavy tail to the floating mineral stone containing 30.1 g silver / t with Gold 13.60 g / ton; flotation concentrate contains 1409.0 g / ton of silver, 415.0 g / ton of gold; flotation tailings containing 9.3 g / ton of silver, 1.3 g / ton of gold; cyanide ore containing silver 10.6 Gram / ton, gold 2.8 g / ton; gold mud containing 3.1%, gold 1.2%; cyanide slag containing silver 7.3 g / ton, gold containing 1.6 g / ton; comprehensive concentrate yield of 2.61%, containing silver 1415.0 g / ton, containing 676.9 g / ton of gold; comprehensive recovery rate of silver is 81.93%, gold is 93.93%.
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