... diameter sand-like particles, and entrained 1-2% slag, the chemical composition of C0.1%, 22% Ni18, S0.45%, P0.015 ... the closed state, environmental protection and energy saving.(4)The heat of the nickel slag material into the submerged arc furnace ... material into the furnace, save a lot of physical heat and chemical heat,significantly reduce the energy and reductant consumption and increase production ...