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第六讲冲天炉的热效率当我们谈到冲天炉焦铁比的时候,常有人问:一公斤焦炭最多能化多少铁?要回答这个问题看起来很容易,而实际上却很困难。从理论上说,这个问题的答案是一个“定数”,例如:一公斤铁料熔化和过热到1400℃时需要多少热量呢?计算表明约300千卡。一公斤焦炭(焦炭中固定碳含量按85％计)在完全燃烧时能放出多少热量呢?计算表明约6885千卡。那么一公斤焦炭可把6885/300～23公斤的铁料熔化和过热到1400℃。所以,理论上的焦铁比是1:23。另外,在炉内的Fe、SI、Mn等元素在氧化时都要放出热
Sixth, the thermal efficiency of the cupola When we talk about the cupola than the cupola, often asked: one kilogram of coke up to the number of iron? To answer this question may seem easy, but in fact it is very difficult. In theory, the answer to this question is a “fixed number,” such as how much calories a kilo of iron needs to melt and overheat to 1400 ° C. Calculations show about 300 kcal. One kilogram of coke (85% of fixed carbon content in coke) How much calories can it emit when completely combusted? Calculations show about 6885 kcal. Then a kilogram of coke can be 6885/300 ~ 23 kg of iron melting and overheating to 1400 ℃. So, theoretically, the ratio of iron to iron is 1:23. In addition, in the furnace of Fe, SI, Mn and other elements in the oxidation should release heat