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目前,冲天炉仍然是铸造车间熔化铁水的主要设备。在冲天炉的修筑过程中,预热带上段(从加料口到热风炉胆上沿)一般采用成型耐火砖修筑而成,熔化中,由于预热带上段多次承受金属炉料的冲击、碰撞,成型耐火砖随时间的延长皆有不同程度的破损和烧损,在热风炉胆上沿出现台阶。造成预热带上段卡料、搭棚,严重影响了正常生产。我厂现用2.5t/hr热风冲天炉,预热带上段原先一直选用成型耐火砖修筑,更换一次耐火砖约使用4～5个月,每年一座冲天炉仅此项费用在1800元左右(不计人工),况且使用后期炉壁破损和烧损严重,
Cupola is still the main equipment for melting molten iron in the foundry. In the process of building a cupola, the upper section of the preheating zone (from the feeding port to the upper of the hot blasting furnace) is generally constructed by molding refractory bricks. In the melting, since the upper section of the preheating belt repeatedly bears the impact of the metal charging material, Molded refractory bricks over time have varying degrees of damage and burning, there is a step in the hot air stove gall. Caused preheating with the card, scaffolding, seriously affecting the normal production. I plant now 2.5t / hr hot cupola, preheat zone has been the selection of the original shape of refractory brick construction, replacement of refractory bricks about 4 to 5 months, a cupola each year only the cost of 1,800 yuan (excluding Artificial) Moreover, the use of late furnace wall damage and burning serious,