Mechanism of physisorption of collectors in activation of non-sulfide mineral flotation by metal ions

Challenges for Development in Mining Science and Mining Industry

Kondratiev, S.A.^1 ; Tsitsilina, D.M.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

关键词: Adsorbed species;    Copper sulfate;    Lead nitrates;    Mineral flotation;    Modern thermodynamics;    New mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012032/pdf
DOI  :  10.1088/1755-1315/262/1/012032

来源: IOP

【 摘 要 】

The authors address the problem of activation of non-sulfide minerals by metal ions. A brief analysis of modern ideas about the mechanism of activation of rutile, ilmenite, and fluorite by copper sulfate or lead nitrate is given. It is shown that modern thermodynamic ideas about the mechanism of activation incompletely agree with the accumulated experimental and practical information on flotation with the use of activators. A new mechanism of mineral flotation activation based on the physically adsorbed species of collectors is proposed. The proposed mechanism considers the kinetics of the formation of flotation contact and the influence exerted by the collector-activator associates stabilized by the collector anions.