The rotational jet and local oxygen enrichment can improve the mixing of oxygen and pulverized coal, but the effect of coal injection is weak on the whole flow field in blowpipe.
结果表明，氧-煤喷枪的漩流、富氧率等仅在氧枪出口的有限区域内对流场有较大的影响；
With the price growth of coal, it is necessary to recalculate the economic efficiency of oxygen-riched coal injection.
随着煤炭价格上涨，富氧多喷煤的经济效益要重新计算。
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。
Injecting blended pulverized coal combined with oxygen-enriched blast and enhancing wind temperature can notably improve the combustion properties of blast furnace pulverized anthracite injection.
大量富氧效果最为明显，比较而言，混合喷吹，辅以富氧及加入助燃剂能够显著提高煤粉的燃烧性能。
It shows that high blast temperature should be combined with technology such as large coal injection and enriched-oxygen, so it will be realized and bring the effect of energy-saving.
研究结果表明，高风温必须与大喷煤、富氧等技术相结合，才能实现并发挥节能作用。
Keeping the oxygen content of the injection gas below 15%, possibly by introducing some N_2 into the gas medium, will prevent coal explosion.
控制制粉和喷吹系统中的含氧量在15％以下，可以防止煤粉爆炸，降低气氛中含氧量可以采用充惰性气体的办法。
The initial position and velocity of pulverized coal at oxygen-coal lance outlet has been proposed, thus injection of pulverized coal in the blast furnace can be simulated.
给出了氧煤枪出口处煤粉颗粒初始位置和初始速度的分布，从而为高炉煤粉喷吹的数值模拟打下了基础。
The initial position and velocity of pulverized coal at oxygen-coal lance outlet has been proposed, thus injection of pulverized coal in the blast furnace can be simulated.
给出了氧煤枪出口处煤粉颗粒初始位置和初始速度的分布，从而为高炉煤粉喷吹的数值模拟打下了基础。
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