Electrochemistry in the Plant

Electrochemical mechanisms governing the mineral-reagent interaction and inter- mineral interactions are reviewed. Two electrochemical factors of practical importance in flotation are the pulp potential and galvanic interactions. Examples of industrial importance are discussed. Two developments in sulphide flotation which are related to the electrochemistry of the system are collectorless flotation and nitrogen flotation. The practical importance of each in the processing of complex ores is described. Use of specific electrodes, measurement of pulp potential and its use to monitor and possibly control flotation are discussed.