公开(公告)号：US11779935B2

公开(公告)日：2023-10-10

申请号：US16693186

申请日：2019-11-22

申请人： Central South University

发明人： Haisheng Han ,  Wei Sun ,  Yuehua Hu ,  Ruolin Wang ,  Zhao Wei ,  Wenjuan Sun ,  Li Wang ,  Yue Yang ,  Honghu Tang ,  Qingpeng Zhang ,  Lei Sun

IPC分类号： B03D1/002 ,  B03D1/02 ,  B03D1/018 ,  C01F11/22

CPC分类号： B03D1/002 ,  B03D1/018 ,  B03D1/02 ,  C01F11/22 ,  B03D2201/06 ,  B03D2203/02

摘要： Disclosed are a slow-release inhibitor for high-magnesium sulfide mineral flotation and an application thereof, where the inhibitor is a nano colloidal particle of an alkaline earth fluoride such as CaF2 and BaF2 or a highly-reactive natural alkaline earth metal mineral powder. When applied to the flotation separation of a high-magnesium sulfide ore, the inhibitor can slowly release F ions to preferentially form a MgF2 layer on the magnesium-containing mineral surface, which provides a structure similar to MgF2 on a surface of oxidized gangue minerals such as magnesium oxide, changing surface electrical property of the magnesium-containing mineral, inhibiting heterogeneous coagulation of magnesium-containing minerals and sulfide ores due to electrostatic attraction and reducing entrainment, enveloping and agglomeration of gangue minerals to efficiently inhibit the flotation of oxidized gangue minerals such as magnesium oxide.