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1960年我国上海地区已在生产上采用大排距双层送风冲天炉,并取得了良好效果.该炉内径为φ580~φ600毫米,设有两个风带,每个风带有一组风口(每组有两排),下组上排风口与上组下排风口之间的距离为640毫米.风口比为3.9~4.6%.上组风口截面积占风口总截面积的47%,下组占53%.此后,一些单位相继在生产条件下进行了一系列试验研究工作.在采用合理排距和风量分配比的情况下,当焦耗相同,其他条件不变时,铁水温度一般可提高30~50℃,增碳量稍有提高.
In 1960, Shanghai in our country has adopted a large row of double-deck air-blast cupola in production, and achieved good results. The furnace diameter φ580 ~ φ600 mm, with two wind belts, each with a group of wind outlet ( Each row has two rows), the distance between the lower group of upper air outlets and the lower group of lower air outlets is 640 mm, the air outlet ratio is 3.9 to 4.6%, the upper air outlet cross-sectional area accounts for 47% of the total air outlet cross- The next group accounted for 53% .After that, a number of units have conducted a series of experimental studies in production conditions.In the case of a reasonable row distance and air volume distribution ratio, when the coke consumption is the same, the other conditions remain unchanged, the molten iron temperature is generally Can increase 30 ~ 50 ℃, slightly increased carbon content.