Several flotation examples of gold and silver mines
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1, the dawn gold mine metal minerals beneficiation natural brass gold mine, iron ore followed by a brown, pyrite and pyrrhotite. Gangue minerals quartz, followed by the sericite, chlorite, feldspar, biotite and carbonates. The useful ingredients in the ore are gold, copper and silver .
Size / mm +0.074 0.074~0.053 0.053~0.037 0.037~0.01 - 0.01
Relative /% 5.79 8.94 7.58 61.27 16.42
Nine collectors have been tested in the flotation test: ethylammonium black, isopropylammonium black, ethyl acrylate black, 25 black, butyl ammonium black, 35 collector, No. 156 collector, ethyl xanthate and butyl xanthate. But in the end, ethyl xanthate (EX) is the best, followed by butyl xanthate. The foaming agent is a pine oil. The process and pharmacy system determined by the test are shown in Figure 11-4. The results of the selection are listed in Table 11-3.