The main metal ore minerals limonite ore, a small amount of silver sulfide minerals, trace brass pyrite and gold dispersed nature. The main gangue of quartz, sericite, serpentine and so on. The original ore TFE is 39.87%, silver is 220 g/ton, gold is 0.84 g/ton, and copper is 0.84%.
Main mineral limonite (X diffraction analysis goethite) more than 80%, colloidal iron oxide quality, fine particle size which is the original ore and after intense weathering formed by hydrolysis, to great dressing difficult. The phase analysis of silver, silver wrapped in more than 40% of gangue minerals, more than 30% of silver was adsorbed state assigned the presence of iron manganese oxide, flotation difficult to recover only about 20% of the silver sulfide gold and trace Natural silver can be recovered by flotation.
About 90% of the copper minerals in the ore are combined phase copper oxide, which cannot be recycled.
The test uses two process schemes: (1), flotation-cyanide leaching process, and the silver (gold) concentrate obtained by flotation is: silver grade 7588.53 g / ton, silver recovery rate 33.26%, gold grade 20.44 G / ton, recovery rate of 22.84%; flotation tailings cyanide leaching test indicators: silver leaching rate of 49.05% (on the mine), gold leaching rate of 62.85% (on the mine); flotation + silver cyanide total recovery 82.31%, the total recovery rate of gold is 85.69%. (2) The whole mud cyanidation leaching process has a silver leaching rate of 78.23% and a gold leaching rate of 88.64%.Small Autoclave,Composite Material Autoclave,Composite Treatment Autoclave,Civil Use Autoclave
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