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白煤粉化铁,生产实践已证明可以获得高温优质的铁水。但由于白煤粉需采用旋风燃烧方式,炉内温度高达1700℃左右,而目前使用的耐火砖耐火性能满足不了要求。在正常熔炼过程中,护衬表层已处于熔融软化的状态,高温强度甚低,在高温气流高速猛烈冲刷及化学侵蚀下,炉衬被侵蚀非常严重,使用寿命很短。一般炉龄只有1O炉次左右(每次开炉时间约
White coal iron, production practice has proved that high-quality hot metal can be obtained. However, due to the white coal powder to be used cyclone combustion, the furnace temperature up to about 1700 ℃, and refractory refractory brick currently used to meet the requirements. In the normal melting process, the lining of the lining has been in a state of melting and softening, and the high temperature strength is very low. Under high temperature and high velocity violent erosion and chemical attack, the lining is eroded very seriously and the service life is very short. Ordinary furnace temperature is only about 1O (each time about the furnace