The problem of eﬃciency increase of processing of rich gold-bearing concentrates is considered. The review and the critical analysis of the existing ways of processing of concentrates were provided. The special attention is paid to cyanide leaching - one of priority ways of processing of gold-bearing concentrates at gold-extracting factories with cyanic cycle. In relation to a gravitational concentrate of LLC “Berezovsky Mine” the actions directed to acceleration of leaching of large gold were developed. Features of gold dissolution when using oxidizers alternative to oxygen were studied: perox- ides of hydrogen and calcium, bromat of potassium. Researches and largely laboratory check of technology of gold cyanic leaching with chemical activation of process were carried out. Based on researches results manufacturing division on processing of rich gold-bearing concentrates was designed and put into operation at LLC “Berezovsky Mine”. At hydrogen peroxide used in comparison with traditional conditions the speed of leaching of gold increases by 1.5-2 times. At initial contents in concentrates of 100-500 g/t under comparable conditions contents in tails decreases from 10-15 to 1-3 g/t. Commercial operation of the developed technology has shown that through extraction of gold from concentrates reached 98-99%, at the same time losses of gold with dump tails were reduced by 4 kg a year.
|Translated title of the contribution||DEVELOPMENT AND INTRODUCTION OF MODERN TECHNOLOGY OF GOLD CYANIDE LEACHING FROM GRAVITATIONAL CONCENTRATES|
|Number of pages||6|
|Publication status||Published - 2017|
Level of Research Output
- VAK List