Hot air cupola

For hot-blast cupola, adopt three tendon type hot blast internal furnace and anti-heating-expansion structure plus the superposition and special air-feeding and heat exchange mode, the air temperature can reach 300 ℃ above, the iron liquid temperature is at the range of 1450 -1520℃, and the coke ration is 1：8-1：10, besides, the service life of hot-blast internal furnace can be over 4000 work hours.