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结合昆钢2500m~3高炉生产实际,阐述了焦炭质量下滑后对炉况、燃料消耗、生产成本的影响,提出了满足昆钢2500m~3高炉冶炼需要的焦炭最低质量要求。昆钢2500m~3高炉生产实践表明,焦炭质量下滑后,高炉煤气流分布改变,顺行变差,燃料比升高,生产成本升高,并且存在炉况失常,甚至影响高炉一代寿命的风险。2016年3月、4月、9月,焦炭质量下滑后,昆钢2500m~3高炉生产成本分别升高43.44万元、13.76万元和54.32万元。
Combined with the actual production of 2500m ~ 3 blast furnace in Kunming Iron and Steel Co., Ltd., the influence of the decline of coke quality on furnace condition, fuel consumption and production cost was expounded. The minimum quality requirement of coke to meet the needs of 2500m ~ 3 blast furnace in Kunming Iron and Steel Co. was proposed. Kunming Iron and Steel 2500m ~ 3 blast furnace production practice shows that after the decline of coke quality, blast furnace gas flow distribution changes along the line worse, fuel ratio increased, the cost of production increased, and there are furnace conditions, and even affect the risk of blast furnace generation of life. In March, April and September of 2016, after the decline of coke quality, the production cost of 2500m ~ 3 BF in Kunming Iron and Steel increased 434,400 yuan, 137,600 yuan and 543,200 yuan respectively.