Beneficiation and hydrometallurgical processing of gold-containing sludgeSergei Ivannikov, Oleg Ageev, Svetlana Bratskaya, Michael Medkov, Evgeny Shamrai and Aleksandr YudakovE3S Web Conf., 56 (2018) 03007DOI: https://doi.org/10.1051/e3sconf/20185603007