“…Furthermore, studies on the dependence of the technological results of non-ferrous sulfide ores (copper-arsenic-bearing and non-bearing arsenic, lead-zinc, and polymetallic) flotation on the pulp oxidation-reduction potential (presented with respect to the standard hydrogen electrode, SHE, i.e., Eh) are reviewed [2]. Findings on the relation of Eh and collector-less flotation are presented.…”