近年来,大型高炉的鼓风一般要求进行富氧。富氧鼓风的重要意义在于提高高炉的利用系数。富氧控制就是将掺入鼓风中的氧量维持在生产所要求的数值上。富氧的多少可用富氧量或富氧率表示。 富氧量就是掺入鼓风中的氧气含量。 而富氧率是以百分数表示的鼓风中空气的含氧量高于大气的含氧量的多少。
本文描述了高炉高富氧喷煤操作的规律,分析了喷煤量与富氧率之间的关系。
This paper describes the regularity of the blast furnace operation with the oxygen-enriched and PCI process. The theoretical relations between the PCI rate and oxygen-enrichment are analyzed.
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;
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.
研究发现高温不利于固硫,但富氧能提高固硫率。
The results show that high temperature is not beneficial to fix sulfur but rich oxygen can advance sulfur-fixation ratio.
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