APPLICATION OF SULPHATE ROASTING IN PROCESSES OF COMPLEX EXTRACTION OF VALUABLE REDUCTANTS FROM POLYMETALLICAL CONCENTRATE . Proceedings of the YSU B: Chemical and Biological Sciences, [S. l.], v. 44, n. 2 (222), p. 19–23, 2010. DOI: 10.46991/PYSUB.2010.44.2.019. Disponível em: https://journals.ysu.am/index.php/proceedings-chem-biol/article/view/vol44_no2_2010_pp019-023. Acesso em: 19 may. 2025.