L. N. Krylova, Leading Researcher, e-mail: krulov@yandex.ru; E. V. Adamov, Professor, National University of Science and Technology «MISIS»; T. A. Pivovarova, Senior Researcher; T. F. Kondrateva, Head of Laboratory, Institute of Microbiology named after S. N. Vinogradskiy, Russian Academy of Sciences.

The results of researches of conditions of heap bacterial and chemical leaching of complex ore from Udokanskoe deposit, taken into account climatic features, such as freezing temperature, have been presented. Influence of temperature, concentration of sulphuric acid and oxidizer of ferric iron ions sulphides, conditions of solution feeding, ore granularity on copper extraction and acid consumption during percolation leaching has been defined, bacterias condition in different process mode has been researched. The conditions for realization heap leaching of copper ore in plus and minus temperature have been developed.

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