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1·The necessity and function of sintering hearth layer were presented.

论述了烧结铺料的必要性及其作用。

2·Lining a layer of ceramic pads at the bottom of hearth can directly influence the slag-pig solidified layer.

在炉缸底部炭砖热面筑砌一层陶瓷垫，直接影响炉底渣铁凝固层的形成。

3·In order to make the hearth and hearth bottom have the same life-span as that of blast furnace, one of effective measures is to form a layer of slag-metal skull on the hearth and hearth bottom.

实现高炉炉缸、炉底与高炉寿命同步的措施之一就是在高炉炉缸和炉底冻结一层渣铁壳。