The article is devoted to the development of an efficient technology for the processing of aged tailings of the «Solton-Sary» enrichment plant in Kyrgyzstan. Based on the detailed investigation of initial material, authors select most appropriate technology for processing of technogenic material, considering through gravity separation, flotation and hydrometallurgical methods of processing. The methods of sequential gravity separation/flotation scheme of enrichment and direct cyanidation of initial ore at different regimes are analyzed; advantages of aged tailings agitation leaching are established. Research, presented in the article, could be useful for enrichment plants, which are developing technologies of the waste products processing in order to increase the raw material base.
The article considers the features of the distribution of technological indicators (product output, content and extraction of copper) by size classes, the main factors influencing the crushing process are identified and regression dependences of productivity on influencing factors are received. The parabolic nature of the dependences of the output of crushed rock on the size class is established. The high adequacy of the obtained models was confirmed and the most promising classes of rock size for copper extraction were determined. The obtained results and models will allow to develop a generalized model of the process of native copper mining and to implement this process with rational and optimal parameters. Also, the received models will allow to carry out an estimation of productivity of a research site of processing of raw materials of basalt quarries.
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The article is devoted to the development of an effective technology for processing serpentinite ores from the Bozymchak deposit in the Kyrgyz Republic. Based upon the analysis of mineralogical, physical and chemical parameters of the ore, the authors set reasons for the decrease in technological indicators of the existing concentrator and determine concentrating properties of the reviewed serpentinite resistant material by applying methods of intensifying the flotation process by using additional flotation collectors/depressors and introducing the process of mechanochemical activation of the pulp before flotation. In the proposed technological flowsheet, main requirements for the technological flowsheet and reagent suite of processing serpentinite ores are formed and it is acknowledged that an increase in the grinding size, introduction of the selective copper collector and additional depressor determines the prospects for improving the “reagent” component of determining factors of the set task. Materials of the article can be useful for mining and processing enterprises while involving resistant copper bearing, magnesian serpentinite ores in the processing in order to increase the raw material base of the existing mining and processing complex.
Аннотация Постановка задачи (актуальность работы): в статье приведены результаты исследования по выщелачиванию меди из хвостов флотационного обогащения золотомедной руды месторождения Кумбель. Для выбора условий процесса выщелачивания меди изучены зависимости расхода серной кислоты, продолжительности, температуры, соотношения Т:Ж. Для интенсификации процесса сернокислотного выщелачивания предложено использование ферромагнитного порошкообразного катализатора, введение которого способствует снижению кинетики выщелачивания и расхода растворителя. Цель работы-определение оптимальных параметров сернокислотного выщелачивания меди из хвостов флотационного обогащения с применением катализатора. Используемые методы: ИК-спектроскопический, рентгенофазовый, спектральный, химический (с применением сертифицированных методик) методы анализа. Новизна: при сернокислотном выщелачивании использован ферромагнитный катализатор, введение которого способствовало повышению скорости выщелачивания и снижению расхода растворителя. Результаты: установлено, что выщелачивание хвостов флотационного обогащения медьсодержащих руд сернокислотными растворами в присутствии ферромагнитного катализатора приводит к повышению уровня извлечения меди. Практическая значимость: результаты исследований могут быть полезными для горно-обогатительных предприятий при вовлечении в переработку техногенных отходов с целью повышения сырьевой базы.
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