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Modelling and development of recycled water conditioning of copper-molybdenum ores processing

International Journal of mining Science and Technology 2019年第2期29卷 313-317页

作者： Irina Pestriak Valery Morozov erdenetuya Otchir National University of Science and Technology MISiS erdenet mining corporation

Current use of enrichment and processing technologies of ores requires the introduction of closed circuits of water treatment. A decrease in technological properties is caused by accumulations of ion-molecular components in the circulating water. The objective of the simulation is to determine the maximum allowable concentrations of ions and molecules as well as the choice of conditions for deposition or *** of all, our examinations decrease the concentration of copper ions and fatty acids in the circulating water. By pre-mixing water with the highest concentration of these ions, a reduction of copper ion and fatty acid concentrations in the recycled water occurs. The results do not only ensure the achievement of the maximum permitted concentration(MPC) of copper and iron, significantly reducing the amount of oxidized copper, they also make it possible to use the united sewage as current water for the flotation process. Mixing and adding filtrate of tailings, discharges of urban wastewater treatment and effluent of ash pit of thermal power stations(TPS) to recycled water causes an increase in the capacity of the enrichment plant by 15–17%.

关键词： Tailings recycling water Closed cycle Urban waste water Conditioning Flotation of ore Natural water

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Improvement of copper-molybdenum ore beneficiation using a combined flotation and biohydrometallurgy method

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International Journal of mining Science and Technology 2013年第1期23卷 41-46页

作者： Irina Pestryak Valery Morozov Jamsranjav Baatarhuu Chemistry Department Moscow Mining University Moscow 119991 Russia erdenet mining corporation Erdenet Orkhon Aimag 213900 Mongolia

The authors present the results of analysis of material composition and experimental investigations of acid and biohydrometallurgical leaching of middlings on grain size, pH level, leaching process duration, temperature and slurry density. The rational parameters of flotation and acid-bacterial leaching of middlings providing an efficient release of valuable components from mineral complexes and recovery to flotation concentrate and leaching solution have been determined. A combined flowsheet and a beneficiation process for bulk flotation middlings of copper-molybdenum ore have been suggested, which include middlings grinding, sulfide minerals flotation, bacterial leaching of sulfide flotation tailings, liquid-phase extraction of dissolved copper and electrolysis of re-extraction eluates. The suggested combined method of cleaning of middlings of copper-molybdenum ores beneficiation provides the total copper recovery increase by 0.8% with a reduction of the cost price of saleable material by 0.5%.

关键词： Copper–molybdenum ore Beneficiation of middlings Flotation Bioleaching Combined flowsheet

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