The purpose of the test is to provide a preliminary basis for the possibility of mine development and utilization through the ore dressing test of the ore oxidized ore and primary ore.
This is a gold mine in the United States on the causes of Carlin-type gold deposits, the ore mineralization similar characteristics and nature of the ore and the Carlin-type gold deposits, is refractory ore types.
The main ore minerals: dolomite, calcite, arsenopyrite, a small amount of pyrite, limonite, chlorite, white mica, sericite, brass trace mineral, secondary malachite.
The gold in the ore mainly occurs in the cryptocrystalline fine-grained limestone constructed by carbonate. The gold is dispersed in the poisonous sand and the limonite formed by the oxidation of the poisonous sand by ultra-microscopic, fine dispersion and diffuse dispersion. The arsenopyrite and limonite are the carrier minerals of gold in the primary ore and oxidized ore. The crystalline particles are very fine, and the particle size of the arsenopyrite wrapped in the carbonate minerals by ultramicroscopic needles is 0.001~0.005mm.
The structure of the ore is simple, mainly composed of fine-grained disseminated structure. The crystal is very fine needle-like, granular, needle-shaped, self-crystal columnar arsenopyrite, almost inlaid in the form of inclusions in fine-grain carbonate minerals, more than 70% difficult Dissociation.
In 2004, the oxidized ore with a grade of 8.64 g/ton was tested for cyanidation, and the leaching was set at 87.5%. In 2006, the flotation test was carried out on the original ore with a grade of 2.53 g/ton. The gold concentrate grade was 31.44. g / ton, gold recovery rate of 80.56%. The cyanide leaching experiment was carried out on the flotation tailings with a grade of 0.53 g/ton. The effect was not obvious.
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