Beneficiation of tungsten-germanium-gold deposit in Xiangxi gold deposit, Hunan

The ore dressing process of the mine is shown in the figure below.

The ore of this mine belongs to the medium-low temperature hydrothermal tungsten- strontium - gold deposit. The main minerals are scheelite , stibnite and natural gold. Followed wolframite, pyrite, sphalerite, galena, arsenopyrite and other gangue minerals as quartz, calcite followed, apatite, dolomite, uneven thickness state was useful minerals disseminated In the veins.

In the process flow, the flotation is used for recovery, and both gold and tungsten are recovered by re-election plus flotation. The flotation conditions and indicators are listed in the table below.

Flotation conditions and operation indexes of tungsten-gold ore in Xiangxi gold mine

Project	PH	Drug formulation / gÂ·t ^-1
Sheet metal mixed dressing	6.7	40 butyl xanthate, kerosene 8.2, 46 sulfate, sodium silicate-fluoro-91
Sheet metal separation flotation	7.5	200 butyl xanthate, aerofloat 80, pine oil (q.s.), 100 lead nitrate, copper sulfate, 700
Job index	The ore contains 1.71%, the concentrate contains 34.72%, the tailings contain 0.057%, the recovery rate is 96.62%, arsenic 20%~58%, Au64%~75%.

Figure Concentration flow chart of tungsten, antimony and gold ore in Xiangxi Gold Mine

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