The Development of Innovated Complex Process for Treatment of Old Flotation Tailings of Copper-Zinc Sulfide Ore
Khussain Valiyev,
Aliya Bugubaeva,
Aleksandra Nechaeva,
Alena Artykova,
Vitaliy Melamud,
Devard Stom,
Anna Boduen,
Aleksandr Bulaev
Affiliations
Khussain Valiyev
Research Institute of Applied Biotechnology, Akhmet Baitursynuly Kostanay Regional University, 47A Baitursynov Str., Kostanay 110000, Kazakhstan
Aliya Bugubaeva
Research Institute of Applied Biotechnology, Akhmet Baitursynuly Kostanay Regional University, 47A Baitursynov Str., Kostanay 110000, Kazakhstan
Aleksandra Nechaeva
Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 7/2 60-letiya Oktyabrya Ave., 117312 Moscow, Russia
Alena Artykova
Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 7/2 60-letiya Oktyabrya Ave., 117312 Moscow, Russia
Vitaliy Melamud
Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 7/2 60-letiya Oktyabrya Ave., 117312 Moscow, Russia
Devard Stom
Baikal Museum SB RAS, 1 Akademicheskaya Str., 664520 Listvyanka, Russia
Anna Boduen
RIVS Group of Companies, 11A Zheleznovodskaya Str., 199155 Saint Petersburg, Russia
Aleksandr Bulaev
Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 7/2 60-letiya Oktyabrya Ave., 117312 Moscow, Russia
The possibility of selective Cu and Zn leaching from the sample of old pyrite tailings, which is one of the most widespread types of solid waste forming during non-ferrous metal production, using sulfuric acid solutions and water was studied. It was shown that water leaching provided selective extraction of Cu and Zn and comparatively low iron ion extraction. At the same time, acid leaching provided the obtainment of pregnant solutions with high ferric ion concentration, which can be used for oxidative leaching of substandard copper concentrates. Water and acid leaching also provided increased Au recovery by cyanidation. The results suggest that acid leaching can be an effective approach for processing old flotation tailings, which allows the extraction of base metals from these wastes and treating flotation tailings for subsequent cyanidation. Effective flotation treatment methods should also provide environmental load reduction, which is caused by the long-term storage of metal-bearing wastes.
