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Maximum Rates of Pulverized Coal Injection in Ironmaking Blast Furnaces

机译：炼铁高炉最大喷煤量

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A theoretical study is made on the maximum injection rates of pulverized coal in ironmaking blast furnaces. The study takes account of two restrictive conditions which enable stable blast furnace operations to be maintained. One is to burn out the injected coal in the raceway zone and the other is to avoid the coal ash deposition on the blowpipe wall. The predicted maximum injection rates for some operating blast furnaces are about 190-210 kg per ton of pig-iron produced, which seem to be reasonable in comparison with experiences reported. Also, the influences of pulverized coal injection on the coke consumption, the production rate of pig-iron and the bosh gas temperature are examined in relation to some blast gas conditions such as the oxygen enrichment and the moisture addition.
机译：对炼铁高炉中煤粉的最大注入量进行了理论研究。该研究考虑了两个限制条件，这些条件可以保持稳定的高炉运行。一种是在滚道区域烧尽注入的煤，另一种是避免煤灰沉积在吹管壁上。某些运行中的高炉的预计最大喷射速率约为每吨生铁190-210千克，与所报告的经验相比似乎是合理的。另外，还研究了煤粉喷射对焦炭消耗，生铁生产率和波斯瓦斯温度的影响，并与诸如氧气富集和水分添加等高炉条件相关。

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