Ministry of Industry and New Technologies of the Republics of Tajikistan, Dushanbe, Republic of Tajikistan:

Bobozoda Sh., Minister

National University of Science and Technology “MISiS”, Moscow, Russia:
Boboev I. R., Junior Researcher, Chair of Non-Ferrous Metals and Gold, e-mail: boboev-i@mail.ru
Strizhko L. S., Professor, Chair of Non-Ferrous Metals and Gold, e-mail: sls_2007.47@mail.ru

This article shows the results of pilot plant tests of gold leaching from mixed gold-bearing ores with and without underwater acoustic projectors. All the tests were carried out using two process flowsheets: direct cyanidation of ground ore without projector (preliminary cyanidation of ground ore with further sorption leaching); cyanidation in grinding cycle feeding the alkaline solution, saturated in underwater acoustic projector. Inefficiency of direct cyanidation of ground ore during the investigated raw materials processing is shown: firstly it is connected with the process duration and low gold extraction. Cyanidation in the grinding cycle feeding the alkaline solutions, saturated in underwater acoustic projector, was industrially tested. The results show that the offered flowsheet is the most efficient. These conditions allow to reach the high gold extraction only on the stage of cyanidation in grinding cycle feeding the cyanide alkaline solutions, saturated with oxygen in the field of hydroacoustic influence.
This article was written within the implementation of the subsidiary agreement No. 14.578.21.0014 (June 5, 2014) (unique identifier No. RFMEFI57814X0014) between the National University of Science and Technology «MISiS» and the Ministry of Education and Science of the Russian Federation within the realization of the federal target program “Investigations and developments by the priority ways of development of the scientific-technological complex of Russia for the period of 2014–2020”, approved by the decree of the Government of the Russian Federation No. 1096 (November 28, 2013).

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