The intermediate package dry material is the third generation product after the insulation board. It is an amorphous refractory material (intermediate package working lining) made by vibration molding without adding water or liquid binder. The dry material is dense and uniform, and generates demolding strength after low-temperature heating. The use of dry materials in the production of intermediate work lining is due to its convenient construction, short baking time, good slag resistance, good insulation effect, and low energy consumption