Copper-containing minerals can be separated from waste raw materials or gangue by crushing and crushing, which is crushed again and further crushed with a ball mill or mixer mill. In this way, the final mineral particle size is usually less than 100um.
In the final crushing process, a collector is added to the slurry. This collector adsorbs copper sulfides and makes its particles hydrophobic. These copper mines will be enriched and recovered by a flotation process. In flotation, the air is passed into the slurry. A foaming agent will also be added to create bubbles and to firmly attach the copper particles to the bubbles at the top of the slurry. The slurry or tailings coming out of the flotation tank will enter the concentration tank for further settlement. A flocculant is added at this point to promote rapid settlement and clear overflow. The clarifying overflow will be used as recycled water. The remaining concentrated tailings are fed into a centrifuge for centrifugal dewatering, at which point the flocculant is added as a centrifugal additive.
Bubbles (concentrate) filled with copper ore are mechanically separated from the overflow. It is then concentrated and dehydrated. At this time, flocculants are used to improve the efficiency of sedimentation and filtration. The resulting concentrate or cake contains nearly 25 to 35 percent copper. This will be recovered by pyrometallurgy.
Settlement recommendations for concentrate and flotation tailings use: non-ionic, low yin, 1815, 1825.
Centrifugal additives for concentrated tailings and concentrated concentrates: 1815, 926, 1825.