EJMP&EP





Influence of electrophysical properties of sulphide minerals on their sorption and flotation properties

 
A.A. Abramov* and H. Hoberg

1 Moscow State Mining University, Leninskii pr. 6, 117049 Moscow, Russia
2 RWTH Aachen, Dienstgebande: Wilnerstrasse2, D-52056 Aachen, Germany


Accepted 12 March 2005




ABSTRACT

It has been found with application of various research methods that the electrons to holes ratio and the Fermi level position in sulphide minerals determine the ratio of chemically fixed to physically sorbed collector species on their surface, flotability of minerals and their maximal recovery value in flotation. Maximal flotability and recovery of minerals or, on the contrary, their complete depression are reached at definite values of electrophysical parameters ensuring the optimal ratio of chemically fixed to physically sorbed collector species on the surface of minerals to be floated or the absence of physically sorbed collector species on the surface of minerals in the case of their depression in flotation. Regulation of electrophysical parameters of minerals and/or the composition of the adsorption layer of collector on their surface is the essence of the activation process of zinc sulphides by copper salts and existing methods for improvement and intensification of minerals flotation and selectivity of their separation.




Keywords: Sulphide minerals, Electrophysical properties, Flotation, Adsorption, Activation


* Corresponding author
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