The Effects of Calcium Ions on the Flotation of
minerals Article The Effects of Calcium Ions on the Flotation of Sillimanite Using Dodecylammonium Chloride Zhijie Chen 1, Zijie Ren 1,2,*, Huimin Gao 1,2, Jia Lu 1, Junxun Jin 1 and Fanfei Min 3 1 School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China czjczjwhut.edu.cn (Z.C.) gaohuimin1958126.com (H.G.) lujiapeter163.com (J.L.)