Flotation properties of unusual carbonates: huntite and hydromagnesite

Abstract

Abstract In this study, effects of concentration of anionic collectors like KOl, Flotinor FS-2 and modifying reagents like MgCl 2 , CaCl 2 , Na 2 SiO 3 · 5H 2 O and CMC on surface properties of huntite and hydromagnesite as unusual carbonates have been investigated. The results of microflotation tests have indicated that KOl is more efficient than Flotinor FS-2. And also, MgCl 2 , CaCl 2 have a negative effect on the flotability of huntite and hydromagnesite. Na 2 SiO 3 · 5H 2 O has no significant effect on the flotability of these unusual carbonates. On the other hand, CMC has acted as a depressant on huntite but there is no clear effect on hydromagnesite.