Large scale blast furnace is the developing trend of the ironmaking. Constructing huge blast furnace must have fine burden and high grade coke.
高炉大型化是发展趋势，但大型高炉对炉料要求严格，建设巨型高炉必须有好的炉料及高质量焦炭。
The lining structure with concentrated copper cooling plate-stave combined system for the large-scale blast furnace is the important guarantee of 18 ~ 20 campaign life.
大型高炉的密集式铜冷却板与冷却壁结合的炉衬结构是使高炉寿命达到18 ~ 20年的一项重要保证措施。
The results show that the blast hole diameter has little effect of the vibration level in production blasting, and the other factors should be considered in large scale delay blast design.
结果表明，除炮孔孔径在实际生产爆破中对振动影响不明显外，其它因素在大区微差爆破的设计中都值得注意。
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