TY JOUR TI Differential and integral equations for modeling current gas suspension in the lance blowing slag oxygen converter KW lance KW differential equations KW the speed of the gas suspension KW concentration JO Actual directions of scientific researches of the XXI century: theory and practice AU Sinelnikov, V.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov