SOAPSTOCK-BASED SURFACE-ACTIVE REAGENT FOR COAL FLOTATION–GRAVITY BENEFICIATION

A.A. Kucharov, F.M. Yusupov, S.U. Xalilov, R.A. Toshboboyeva, S.B. Sultonov, M.M. Mamanazarov, L.A. Azimov, S.K. Yusupov, S.Y. Saparov, A.D. Dusmatova