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正文 第二十章 炼铁厂(第2页/共3页)

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炼铁厂的高炉是经过李从燕专门改良设计的,每座高炉高约六米,容积约为五十立方米,基座都是由耐火砖和小卵石夯筑而成,基座的厚度就是近四米,高炉的整体高度达到了前所未有的十米。

早在一个月之前,李从燕就在刺史府后院挖土烧砖,自行研制了试用型的耐火砖,而后经刺史府百工的完善,做成了可大规模使用的耐火砖。

此时的高炉就是用这种耐火砖砌成的,可以耐受更高的温度。同时李从燕设计的高炉加装了风箱,每座高炉的前端都有一个半圆形的突出部,上面加装了一个木质把手,这就是风箱,可以为高炉不断鼓风,以增加燃烧室的温度。

如此改良的高炉完全可以将温度增加到炼钢级别,现在只需要使用合适的燃料就可以炼钢了。不过李从燕还是准备先炼精铁,毕竟炼钢的产量有限,无法满足将来新军对铁料的需求。

“主上,目前炼铁厂计划先期修筑七座高炉,后续还会再修建八座高炉。炼铁厂投产之后,只要铁矿石和煤炭供应充足,每座高炉每天可产精铁两千斤,炼铁厂每月可产精铁九十斤左右!”

“九十万斤?”

这个数字乍一听非常唬人,但是李从燕在心中换算了一下,大概此时的两千多斤为后世的一吨,也就是说炼铁厂一个月的产量有四百五十吨上下,也算是很高的产量了。李从燕计划炼铁厂的产出先供应筹建中的兵仗司,全力为新军打造制式兵备,如果将来有剩余产能的话,再考虑对外出手精铁。

“嗯,很好。”

李从燕上前查勘了一座高炉的底座,只见耐火砖砌得很平整,中间夹杂着个头均匀的小卵石,整体非常坚固,心中很是满意,看来此番招募的百工还是非常不错的。

这时李从燕问道:“炼铁厂高炉的燃料,你们准备用什么?”

“煤炭!”

吴从汉有些奇怪,西麓就有煤矿,而且刺史府也在大力修建这处煤矿,李从燕为何还要多此一问?

李从燕说道:“西麓的煤矿产出只是第一步,炼铁厂的燃料不能用直接煤炭,而是要用焦炭,煤矿产出的煤炭要先进行焦化,再运到这里用于炼铁。如果直接使用煤炭炼铁的话,炼出的精铁含硫量会很高,导致精铁会变得很脆,打造出来的兵备质量会有隐忧!”

吴从汉闻言急忙记下,当即表示会在煤矿增加煤炭焦化的程序。

接着,李从燕说道:“如今的炼铁之法乃是灌钢法,但是还有需要改进之处。”

“请主上指点。”

“现在的百工是把生铁片嵌在盘绕的熟铁条中间,用泥巴把炼钢高炉密封起来,而后再进行烧炼。如此无法保证生铁液均匀的深入熟铁之中,产出的精铁会局部变脆。”

吴从汉一一记下,而后看向身旁陪同的百工,只见几人都是点头称是,心中对李从燕的学识越发的钦佩。

“那如何改进?请主上明示!”

“可以把生铁片盖在捆紧的若干熟铁薄片上,使生铁液可以更好均匀地渗入熟铁之中。不用泥封而用涂泥的草鞋遮盖炉口,使生铁可从空气中得到氧气而更易熔化,从而提 『加入书签,方便阅读』
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