The high efficient exothermic insulation riser is made up with new type of material. Such as exothermic compound, insulation material and bonding agent. Heating mechanism: The exothermic insulation riser has adopted good insulation material and high efficient exothermic. There are little quenching effect, once the liquid steel was pour into the riser, the exothermic reaction will be activated, then the riser will heat the liquid steel with it’s fever. After the reaction, the insulation material will ensure the coagulation time of the liquid steel. The best feeding efficient comes from the characters: Initial adiabatic, then fever, heat preservation for a long time in the end.