OPTIMIZATION OF REAGENT MODES IN COPPER-MOLYBDENUM ORE FLOTATION USING ECONOMY-ORIENTED CRITERIA

An important task in the study of ore dressability is to select the optimal parameters of flotation. In solving this problem, it is required to optimize multiparametric system of consumption of flotation reagents, i.e. indexes of flotation process. For the optimization of reagent modes in flotation of copper–molybdenum ore, it is proposed to use integrated optimization criteria taking into account the influence of economic factors on the final efficiency of flotation. Using the steep ascent method and the factorial experiment, the application of regression equations relating the integrated optimization criterion—function of reduced loss—with consumption of flotation reagents. For the bulk copper–molybdenum ore flotation, the optimization criterion includes the cost of metal loss tailings as well as the cost of re-extraction of pyrite from the bulk concentrate. For the molybdenum flotation, the optimization criterion includes the cost of copper and molybdenum lost in different concentrates as well as the cost of quality loss of the molybdenum concentrate. The calculations of the optimized reagent modes in the bulk and selective copper–molybdenum flotation are exemplified. It is shown that the use of local regression equations for individual parameters retains uncertainty in the choice of adjustment of reagent costs. There is no such uncertainty when using the reduced loss criterion Qt. The application of the integrated criterion to choosing efficient reagent modes makes it possible to find optimal solutions in the complex multiparameter system of input and output parameters of flotation process.

For citation: Erdenezul Jargalsaikhan, Morozov V. V. Optimization of reagent modes in copper–molybdenum ore flotation using economy-oriented criteria. Gornyy informatsionno-analiticheskiy byulleten'. 2019;3:210-220. [In Russ]. DOI: 10.25018/0236-1493-2019-03-0-210-220.

Keywords

Сopper–molybdenum ore, flotation, reagent mode, optimization, integrated criterion, steepest ascent method, complete factorial experiment.

Issue number: 3
Year: 2019
ISBN: 0236-1493
UDK: 622.765.4
DOI: 10.25018/0236-1493-2019-03-0-210-220
Authors: Erdenezul Jargalsaikhan, Morozov V. V.

About authors: Erdenezul Jargalsaikhan, Graduate Student, e-mail: zul479@gmail.com, V.V. Morozov, Doctor of Technical Sciences, Professor, e-mail: dchmggu@mail.ru, National University of Science and Technology «MISiS», 119049, Moscow, Russia. Corresponding author: V.V. Morozov, e-mail: dchmggu@mail.ru.

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OPTIMIZATION OF REAGENT MODES IN COPPER-MOLYBDENUM ORE FLOTATION USING ECONOMY-ORIENTED CRITERIA

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