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陈农同志所编“现代铸工”(上海大东书局出版)下册第501页中:“冲天炉进风口分上下雨列时,若两列风口相距不到400公厘则熔化带高度之上升量,可兴两列风口间之距难相等。进风口分成两列时,风量可比一列进风口者多,并非一列风口的风量,分予两列进风口,此时一定时间内所浇去的炭量较多,熔化速度较速。两列进风口并不能节省焦炭,仅稍增加熔铁温度之
Comrade Chen Nong’s “Modern Castors” (Shanghai Dadong Publishing) Volume 501 of the next book: "When the cupola inlet into the rain column, if the two rows of tuyeres less than 400 mm away from the melting zone height increase Volume, can be hinging the distance between the two tuyeres are equally difficult. Into the air inlet is divided into two columns, the air volume can be more than one inlet, not a column of air volume, divided into two columns into the air inlet, at this time poured to a certain time More carbon, faster melting rate. Two inlets and can not save coke, only a slight increase in melting iron temperature