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我厂7~#高炉在1975年11月大修时,将炉容由255m~3扩至294m~3,目的是增加产量,其它设备没变动,外界条件基本变化不大。月产增加1500吨左右,顺行情况基本与255m~3时相同,月悬料15次左右。我厂炼钢能力大,生铁紧张,且使用电动风机比透平风机成本高。总厂决定为7~#炉配用620m~3高炉的备用风机,2~#透平风机。即由670m~3/分配加压机改为使用1500m~3/分透平风机(该机出力1250m~3/
Our factory 7 ~ # blast furnace overhaul in November 1975, the furnace capacity expanded from 255m ~ 3 to 294m ~ 3, the purpose is to increase production, other equipment did not change, the basic external conditions did not change much. An increase of about 1,500 tons per month, along the line with the basic situation 255m ~ 3 the same, about 15 suspended material on the moon. I plant large capacity steel, pig iron tension, and the use of electric fans than the high cost of turbine fans. The plant decided to use 7 ~ # furnace equipped with 620m ~ 3 blast furnace spare fans, 2 ~ # turbine blower. From 670m ~ 3 / distribution press to switch to the use of 1500m ~ 3 / min turbine (the aircraft output 1250m ~ 3 /