天气预报 > 其他 > 大炼钢铁的铁哪去了
大炼钢铁的铁哪去了
更新时间: 2020-10-31 00:00:00  

大炼钢铁的时候采用的是土高炉,炼出的铁极度不合格,Fe的含量只有85%左右,比现在的海绵铁强不到那里去,后来基本上都回炉了。这就是不按照客观规律办事的后果。

铁(iron)是一种金属元素,原子序数26,铁单质化学式:Fe。纯铁是白色或者银白色的,有金属光泽。熔点1538℃、沸点2750℃,能溶于强酸和中强酸,不溶于水。铁有0价、+2价、+3价和+6价,其中+2价和+3价较常见,+6价少见。

关键词: 炼钢

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