Chemical Analysis of the Composition of Ores as the Basis for Improving the Quality of Ore PreparationBakhtiyor Kholmurodov, Makhbuba Dzhuraeva, Ulugbek Sharafutdinov and Ewgeni KuznecovE3S Web Conf., 278 (2021) 01025DOI: https://doi.org/10.1051/e3sconf/202127801025