Title: Understanding the sequential flotation separation of fluorite, barite and calcite through the AFM adhesion force
Abstract: Using 1-octadecyl ester-1, 2-benzenedicarboxylic acid (OEBA) as a collector, the flotation separation of fluorite, calcite and barite was investigated in this paper. The micro-flotation results showed that OEBA efficiently floated out fluorite and barite from calcite at pH ∼ 9.0, and barite from fluorite at pH ∼ 11.0. OEBA adsorbed on the surface of fluorite, barite and calcite through forming the Ca(Ⅱ)/Ba(Ⅱ)-carboxylate species. The adsorption capacity, in-situ AFM image, interaction force and adhesion force deduced that at pH ∼ 9.0, the hydrophobicity of the three minerals treated by OEBA was followed as fluorite > barite ≫ calcite, while it changed to barite > fluorite ≫ calcite at pH ∼ 11.0. These well explained the sequential flotation separation of barite, fluorite and calcite at pH ∼ 9.0 and 11.0. This work also provided the adhesion force criterion for designing and developing collectors, as well as the flotation separation conditions including the pulp pH, collector or depressant.
Publication Year: 2024
Publication Date: 2024-03-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 4
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot