While the disposal of low-grade flotation tailings creates serious environmental problems, the tailings contain many high valuable metals and a flotation circuit can aid in their recovery. In addition, the recycling process also benefits the surroundings and has positive environmental impact.
The main separation equipment in China is the heavy medium cyclone, where high separation accuracy is important. Here, we look at two heavyweights in coal preparation, which reduced abrasion during the separation process, so decreasing the cost of maintenance.
Coal gangue is not just solid waste, but also has the potential to yield useful energy. In China, a mining group and a local power plant power plant joined forces with a local university to look at ways to recycle coal gangue to improve the revenue, cut down on resource utilization, and reduce environment pollution.