Processing of waste (tails) after flotation of copper production slag to obtain iron oxide pigmentAlisher Samadov, Nilufar Askarova, Rano Toshkodirova, Nigora Akhmedova, Olmos Boltayev, Komiljon Mirzayev and Asadjon KambarovE3S Web of Conf., 524 (2024) 02014DOI: https://doi.org/10.1051/e3sconf/202452402014