炉衬寿命，冶金术语，是指炉衬的使用寿命的长短。
论述了延长精炼电炉捣打料炉衬寿命的问题。
It discusses how to prolong life of refinery furnace liner with ramming material.
实践证明，炉衬寿命成倍提高，社会效益和经济效益显著。
The practice shows that the lining life is doubled, the social and economical benefit are very obviously.
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.
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