Abdurahmonov S.A. - Professor, Doctor of Technical Sciences, Professor of the Metallurgy Department of the Almalyk branch of TSTU. Author of more than a hundred articles, conducted more than a hundred studies in the field of Metallurgy and mineral processing.Toshkodirova R.Je. - PhD in Technical Sciences. Associate Professor at the Department of Metallurgy, Almalyk branch of TSTU.