1. The research presented in this article was financed by the National Science Centre, Poland based on decision number 2014/15/B/ST8/04767 This work supported Ministry of and Higher Education as statutory financial grant Faculty Mechanical Engineering, Silesian University Technology.

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. ads...