recent patents on roll crushing mills for selective
2021-4-20 · The electric machine built-in roller crusher is an explosion-proof electric machine used in the crushing roller. ... Daolong Yang*, Yanxiang Wang, Bangsheng Xing, Yanting Yu, Yuntao Wang and Youtao Xia, “Recent Patents on Roll Crushing Mills for Selective Crushing of Coal and Gangue”, Recent Patents on Mechanical Engineering (2020) 13: 2