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本文介绍了该厂提高两排大间距冷风冲天炉铁焦比的几项主要措施。包括改变曲线炉膛形状,确定适当的炉缸深度,采用二次风,适当降低底焦高度,严格控制风量,保证顺利排渣等。通过上述措施,在保证铁水温度的前提下(一般在1405~1450℃,开炉初期1517℃,最高达1550℃),铁焦比由过去8．5~9∶1提高到12.2~14.7∶1,最高达16.7∶1。全年可节焦280吨,节约耐火砖55吨,合计节约人民币三万多元。
This article describes some of the major measures to improve the iron coke ratio of two rows of large spacing cupola at this plant. Including the shape of the furnace to change the curve to determine the appropriate depth of the hearth, the use of secondary air, appropriate to reduce the bottom coke height, strict control of air volume, to ensure smooth slagging. Through the above measures, the iron-coke ratio has been increased from 8.5 to 9: 1 to 12.2 to 14.7: 1 in the past under the premise of ensuring the molten iron temperature (usually 1405-1450 ° C, 1517 ° C at the beginning of the furnace, up to 1550 ° C) , Up to 16.7: 1. Coke can be 280 tons throughout the year, saving 55 tons of refractory bricks, a total savings of more than 30,000 yuan.