The search for effective reagents for the flotation of non-ferrous metals from mineral raw materials is an actual problem. The article discusses the results of research on improving the technology of processing copper–molybdenum ores using a combined collector emulsion. The object of research was copper–molybdenum ore containing 0.43% copper and 0.0089% molybdenum. Copper minerals are represented by chalcopyrite 1.2% and chalcocite 0.015%, while covellite is present in a much smaller amount. The main mineral of molybdenum is molybdenite. The cycle of collective copper–molybdenum flotation includes the main flotation, control flotation, and three re-cleanings of concentrate. In the basic mode, the collective Cu–Mo concentrate was produced with the copper content of 16.25% with an extraction of 77.79% and with the molybdenum content of 0.45% with an extraction of 79.38%. Reaflot, thionocarbamate, and butyl xanthate were used in a ratio of 1:3:15 to prepare a combined collector agent. In order to produce the combined collector emulsion, the best degree of dispersion, which amounted to 99.5% of particles with a size of −3.6 μm, was chosen. During the Cu–Mo ore flotation using an optimally dispersed microemulsion of the combined collector agent, a collective Cu–Mo concentrate was obtained with a copper content of 18.2% with an extraction of 83.58%, and with a molybdenum content of 0.49% with an extraction of 88.46%. The use of a combined collector agent increases the extraction of copper into the collective Cu–Mo concentrate by 5.79%, while the extraction of molybdenum increases by 9.08%.

The use of flotation reagents in the form of microemulsions significantly enhances the recovery of noble metals during the processing of gold-bearing ore and technogenic materials by improving the flotation of finely dispersed sulfides. This study investigates the effect of dibutyldithiophosphate (DBDTP) applied as emulsion microbubbles in the form of emulsion microbubbles on the flotation of gold-bearing ores and technogenic materials. The research objects were gold-bearing ore and aged flotation tailings from a Kazakhstani deposit containing 3.20 g/t and 0.62 g/t of gold, respectively. Flotation beneficiation was carried out using dispersed DBDTP generated in a water–air microemulsion generator (WAMG). The flotation kinetics results demonstrated that the application of dispersed DBDTP accelerates the flotation process, increasing gold recovery by 4.65% and reducing the gold content in flotation tailings by 0.17 g/t. Under baseline conditions, 37.51% of gold was distributed in the −25 + 0 μm size fraction of tailings with a gold content of 0.98 g/t. When the dispersed reagent produced by the WAMG was applied, the gold distribution in the −25 + 0 μm size fraction decreased to 28.29% (9.22% lower than the baseline), with a gold content of 0.62 g/t. In the flotation of aged tailings, the use of dispersed DBDTP increased gold recovery in the concentrate by 5.88% while maintaining concentrate quality.

The use of flotation reagents in the form of microemulsions significantly enhances the recovery of noble metals during the flotation of gold-bearing ore and technogenic materials by improving the hydrophobicity of finely dispersed sulfides. This study in-vestigates the effect of a microemulsified dibutyldithiophosphate (DBDTP) on the flo-tation performance of gold-bearing ore and technogenic materials. The research objects were gold-bearing ore and aged flotation tailings from a Kazakhstani deposit contain-ing 3.43 g/t and 0.62 g/t of gold, respectively. Flotation beneficiation was conducted using a microemulsion of DBDTP generated in WAMG. Flotation kinetics demonstrat-ed that the application of the DBDTP microemulsion accelerates the flotation process, increasing gold recovery by 4.65% and reducing gold content in flotation tailings by 0.17 g/t. Under the baseline regime, 37.51% of gold is distributed into the −0.025+0 mm size fraction of tailings with a gold grade of 0.98 g/t. When the microemulsion reagent produced by the WAMG is applied, gold distribution in the −0.025+0 mm size fraction decreases to 28.29% (9.22% lower than the baseline), with a gold grade of 0.62 g/t. In the flotation of aged tailings, the microemulsion application increases gold recovery in the concentrate by 5.88% while maintaining concentrate quality.