Separation of gold-arsenic-pyrite by flotation after pretreatment in the vortex layer
When the concentration of hydrogen ions in the slurry is in the range of pH : 5.5 to 10.5 , there is no effect on the flotation effect. Sulfuric acid and lime in the flotation medium, transferred to the recovery of arsenic pyrite concentrate arsenic is 94 to 95%, while only some arsenopyrite occur in a strong base medium (pH> 10.5) in Insignificant inhibition (see Figure 3 ). At the same time, after treatment, a portion of the collector that can be resorbed on the mineral surface remains in the slurry and has a detrimental effect on the next preferred flotation. Adding activated carbon (adding 1 kg / ton) during the treatment of concentrate with a vortex device can improve the process index. The obtained pyrite concentrate ( 1 : 40% ) contains 1.7 to 1.8% of arsenic , so that it can be sent to a copper smelter for treatment. Arsenic concentrate contains 26~27% arsenic , gold Welding Components ,Steel Welded Assemblies ,Laser Welding Subassembly,Steel Welded Assembly Ningbo Metal Sharing Supply Chain Management Co., Ltd , https://www.zenlesf.com
Therefore, after the short-time treatment of the gold - arsenic - pyrite concentrate with the vortex device , the preferential flotation effect of the next step can be greatly improved and the arsenic concentrate rich in gold can be stably obtained.
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