Estimate Mass Flow Rate of Dense Phased Powder Solids Usama Abrar, Liu Shi, Nasif Raza Jaffri, Yi Kang, Muhammad Nawaz and Zhu Huixian E3S Web Conf., 191 (2020) 04005 Published online: 24 September 2020 DOI: 10.1051/e3sconf/202019104005