Abstract
The article considers issues of improvement of the technology of processing of persistent gold-bearing ores and concentrates. The initial raw material is proposed to be subjected to oxidative roasting before cyanation. This is due to the fact that in persistent ores gold is found in such minerals as pyrite, chalcopyrite, arsenopyrite, etc. In turn, these minerals are surrounded by a layer of coal, which significantly reduces the efficiency of gold cyanation. Under oxidative firing conditions, coal is proven to burn by oxygen blowing, and minerals are decomposed into constituent components. In addition, under high temperature conditions, mineral grains are decripted due to their uneven chemical expansion. At the same time, numerous pores and cracks appear in the solid body, through which cyanides penetrate to gold minerals. All this creates good conditions for intensification of the process of extraction of noble minerals from the raw materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Engineering and Advanced Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
