(B, ) the utility model relates to a carbide stove technical field is a graphite composite material stove tongue and carbide stove, this graphite composite material stove tongue includes stove tongue body and graphite composite material stove tongue liner, stove tongue body is opening arc stove tongue body up, and the front end of stove tongue body is the preceding low high inclined plane in back. The internal and external network physical isolation data exchange device is reasonable and compact in structure, high durability and convenient use, cooperation through stove tongue body and graphite composite material stove tongue liner is used, realize the discharge end outflow back of fused high temperature flow state carbide from the carbide stove, graphite composite material stove tongue liner on stove tongue body flows in in the carbide pot of carbide stokehold, when high temperature flow state carbide flows past, half refrigerated carbide can not be attached to on the graphite composite material stove tongue liner, have safe and reliable and can not split or permanent deformation's characteristics, the operation is convenient, the labor intensity of operating personnel is reduced, prolongs service life, and a work efficiency is increased. (B, )