炉顶内衬结构是热风炉类型的重要特征，决定着热风炉炉型和炉衬寿命的长短。
The furnace top inner lining construction is important character of hot air furnace type. Because it decides furnace lining lifetime.
三年的使用表明，炉顶、炉墙和炉底等处的浇注内衬均完好无损，吊挂砖也能满足使用的要求。
It is shown through 3-year application that the castable refractories of furnace top, lining and bottom are excellent without damaged, the hoisting brick can meet the service demand.
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