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通过对国内外多座高炉碱金属富集调研结果的统计分析,以及模拟高炉碱富集区域钾、钠对焦炭劣化影响的试验,发现碱富集区域钾蒸气在焦炭上的吸附能力和破坏性都远大于钠,认为高炉现场应严格控制入炉钾负荷,建议将高温下抗碱金属蒸气破坏的能力作为焦炭新增的质量指标,并提出了入炉碱金属上限值的计算公式。
Through the statistical analysis of the investigation results of alkali enrichment of multiple blast furnaces at home and abroad and the experiment of simulating the effect of potassium and sodium on the deterioration of coke in the alkali enrichment zone of blast furnace, the adsorption capacity and destructiveness of potassium vapor on coke in alkaline enrichment zone were found Which is much larger than that of sodium. It is suggested that the load of potassium entering the furnace should be strictly controlled at the blast furnace site. It is suggested that the ability of destroying alkali metal vapor under high temperature should be taken as the new quality index of coke, and the formula for calculating the upper limit of alkali metal into furnace is proposed.