Higher combustibility and coal injection rate can be acquired in BF by using the coal with lower metamorphic degree and higher content of active matter.
喷吹低变质度、高活性组份含量的煤可以获得较高的燃烧率和较大的喷煤量。
Calculation and plotting methods of BF operation line without coal injection are modified, and calculation formulae of BF operation line with oxygen enrichment and high PCI rate are deduced.
作者对不喷煤时高炉操作线的计算和绘制方法进行修正，推导出富氧大喷煤时高炉操作线的计算公式。
To further increase PCI rate, such works as using quality coal, reforming coal injection system, improving the condition of BF operation will be done.
提出了进一步提高煤比所要做的工作，如优选煤种、改造煤粉喷吹系统、改善高炉生产条件等。
According to the theory on stock column skeleton of BF and the economic analysis of injection, a new concept on limit of injected coal and critical replacement ratio is proposed.
根据料柱骨架理论和喷煤技术经济分析，提出了高炉喷煤极限和临界置换比的新概念；
Effects of the grain size of pulverized coal injection in BF on combustion performance are studied by self-made experimental rig for combustion of pulverized coal.
利用自制的燃烧实验装置，研究了鞍钢高炉喷吹煤粉粒度对燃烧性能的影响。
In the forward to 21 century, the blast furnace technology will be improved in several fields: 1. injection coal and decrease coke rate, 2. Extending of BF campaign life.
面向21世纪，高炉技术将在以下几个方面等到得到了明显的进步：1 .大量喷煤降低焦比。
It is shown the key point of reaching the limit of coal injection is improvement of permeability of stock column and enhanced BF operation.
指出大量喷煤，达到喷煤量极限的关键在于改善料柱透气性，提高高炉冶炼水平。关。
It is shown the key point of reaching the limit of coal injection is improvement of permeability of stock column and enhanced BF operation.
指出大量喷煤，达到喷煤量极限的关键在于改善料柱透气性，提高高炉冶炼水平。关。
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