Liaoning, a gold mine belonging to the sulfide gold-bearing quartz vein type ore greed. The main metallic minerals native gold, pyrite, pyrrhotite, followed arsenopyrite, copper ore, galena, and magnetite. Gangue mainly quartz, feldspar, sericite, kaolin, calcite. Ore features: native gold is extremely fine dissemination size, mostly small drip-like shape and veinlets of pyrite in output, bismuthinite, quartz veins. Natural gold has a considerable amount distributed in the quartz body or its fissures, and is highly dispersed and unevenly embedded. The secondary mineral mud is less, and the harmful element lanthanum has little effect on the leaching effect.
The mine's production capacity is 500 tons / day, the combined process of flotation concentrate re-cyanide, as shown below. The flotation part is two series, each series is two sections of grinding and two sections, and the fine and fine is selected. In addition to the treatment of the flotation of the mine, there are also flotation concentrates of two selected plants in Sidaogou Gold Mine.
According to 1:1 ore blending, after two-stage ball milling, cyanide leaching and washing, the noble liquid is replaced with zinc wire to obtain gold ingot, and then refined into gold ingot.
The mineral processing indicators are:
Flotation indicators: the original ore grade contains 4.70 g / ton of gold, 127.00 g / ton of concentrate, 0.52 g / ton of tailings, 89.32% of gold, and 8.78 yuan / ton of ore processing.
Cyanide index: gold concentrate grade after mixing is 80.90 g / ton, cyanide slag contains gold 0.44 g / ton, precious liquid contains gold 21.80 g / m 3 , poor liquid contains gold 0.99 g / m 3 , leaching rate 94.56% The washing rate is 98.89%, the replacement rate is 95.46%, and the cyanidation cost is 59.18 yuan/ton.
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