Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone

The efficient separation of ultrafine coal is a challenging process due to the particle size and gangue entrainment. In this study, polymer, polyvinylpyrrolidone (PVP), was introduced as regulator for beneficiation. addition PVP improved combustible recovery clean decreased ash content. This effect also presented by selectivity index. regulation mechanism investigated using diverse methods. adsorption tests performed demonstrated amount on coal, kaolinite, quartz, which were related increase in efficiency. A zeta potential analyzer employed elucidate electrical properties particles. results revealed that electrokinetic mineral sensitive varying concentration. distribution observed value influence behavior, tested laser analyzer. X-ray photoelectron spectroscopy used investigate surface elemental compositions regulated PVP. research beneficial understanding role regulators provides basis coal.