... in cases where it is desirable to maintain a metal temperature in the ladle. When it ... ladle- lining life is increased by virtue of a vitreous residual coating left on the refractory by ... steel, ferrous and non-ferrous industries, as a slag coagulation agent, in ladle topping compounds, as an ... a cushioning1.Perlite ore Size12-16mesh, 14-20mesh, 16-32mesh, 20-40mesh, 30-50mesh, 50-150mesh, 200 ...