cyclone separators IIN You hai JI Guang qin CAO Qing yun WANG Jian jun 39 Key Words cyclone separators vortex finder gas flow numerical simulation 5 WILKINSON D WALDlE B CFD and experimental stud J I Minerals Engineering 2005 18 19 24 YUE Ji Xiang QI Yao guang XIAO Wen Sheng et al