Mechanism of the Intensification of a Heterogeneous Reduction Reaction with the Liberation of Gas Bubbles

Developing ways to reduce the consumption of reagent collectors during the flotation of gold-containing ores

“…According to Patent [37], the combined use of petrochemical residue (KOH-92) and PBX reagents leads to an increase in gold recovery of 4.9% and a reduction in flotation time compared to the flotation of gold ore from the Nejdanin mine with PBX alone. The results of using a mixture of PBX and isobutyl dithiophosphate (DTF) with isopropyl-ONmethylthiourea to increase the selective flotation carried out in the monomineral fraction of pyrite and chalcopyrite [38] have been described. The combined use of sulfhydryl ionogenic (strong) and nonogel (weak) collectors allows a change in the composition of surface compounds in the sulfide minerals of the collectors, which leads to a change in the degree of hydrophobicity of the surface and an increase in the flotation selectivity.…”

“…In recent years, a mixture of effective reagents for the flotation of gold-bearing sulfide minerals has been found: mercaptan, imidazoline and foaming agents; wolfene and their hydrocarbinol derivatives; a penflout (TM)-3 (dodecyl mercaptan) mixture of alkylthiocarbamate and aliphatic aldoxime; quaternary ammonium chlorides; methylisobutylcarbinol; ethylxantylformate; and mixtures of elemental sulfur with hydrocarbons. Additionally, reagents such as mercaptobenzothiazole (MBT), DTF, and Hostaflot M-91, which have specific collecting effects on rare metals, have been recommended [39]. The effectiveness of using the "Ofom" reagent for the separation of gold has been noted.…”