第289章 焦碳对大宋的意义
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中原地区炼铁锻钢，很早开始就在使用煤来做燃料了。不是煤比木炭好，而是中原地带的木材资源早就被砍光了，不得以才用煤做为替代燃料。
而煤与木炭最大的差别就在于，煤中含硫量很高，锻造之时煤中的硫融入到钢铁中，大大降低了铁的性能。
这也是为什么春秋战国时期是中原铸器的黄金时代，名剑神兵屡见不鲜，就连青铜器的铸造水平，后世都无法复制的原因。
那个时代铸器用木炭，入汉唐后，因为都用石炭，很多原来用木炭锻造的技术都失传了。
去硫，减硫，一真是困扰中原冶金的一大难题。
但是焦炭的出现，就将改变一这窘境。
焦炭硫的含量很低，进而用它来炼钢铸器之时，钢铁中的硫含量也会随之大大降低。
要是曾公亮拿焦炭去炼个铁试试，保准这老货惊的眼珠子都掉下来。
目前，最强的铁制兵器是百炼钢。故名思议，就是工匠千锤百炼，反复熔炼锻打而来。用熔炼锻打来降低含硫量，控制碳含量。
但因其工艺太过复杂，除了皇家仪仗和将官配器，别的根本就用不起，
大内禁军用的兵器缩到了七十二炼，普通士兵的制式兵器则是三十六炼。
士兵穿的甲胄则是十八炼，甚至就是寻常铸铁打造。说是一捅就漏可能有点夸张，但从古代的一个成语就不难看出寻常铸铁的强度削铁如泥。
焦炭一出，唐奕就有信心让大宋的军械水平整体上一个台阶，而且让铸造难度和铸造成本降几个台阶
焦炭有了，下一步就是建炼矿炉和炼钢炉。
这特么可就费劲了。
大宋炼钢，用的炒钢法。就是把熟铁（含碳量低）与铸铁（高碳铁）混合在一起熔炼，以原料本身的碳含量来中和成最终的成品。因为熔炼过程中需要工匠不停搅拌，形同炒菜而得名。
这在现今来说，已经是非常的先进了。但是，唐奕听过后世的转炉炼钢，对这种一次最多几百斤，费时、费力，还费物料的工艺根本就看不上眼。
他想一口吃个胖子，借着这次机会，把那种一炉就是几吨成品钢的技术弄出来。
好吧，唐奕只是听过，原理也是懂的。
但是，转炉到底长什么样儿，他也不知道。
可是，没关系啊，这不是有人吗？
唐奕提一个思路，和这些工匠一起慢慢研究呗
这一天，和工匠在他的小楼里琢磨了一上午，到了下午，只得让大伙儿先回去，因为他今天有课.，不是财税课，而是战略课。
一到大课舍果然！
除了有公务在身的，能抽出时间的朝臣几乎都在。
按说，战略课不是财税课，他们不用来听。
但是，别忘了，大宋是文人带兵，这些文官，不定哪天就出去当一回监军。所以，战略课反而比财税课来听的人还多些，毕竟这门学问可是他们一点经验都没有的。
唐奕走到讲台前，抿嘴一笑，“今天还是假想题。”
下面一松，假想题就意味着能说话，比纯讲轻松不少。
唐奕把一张一丈来宽的大山河图往墨板上一挂。
“今天咱们来假设一下，若目前的战略态势是，北方蛮夷攻破开封，我族被迫南迁，立都江南，形成南北对峙的态势，那么”
唐奕环视全场，“做为北方蛮夷的你们，如何灭宋？！”
靠！
儒生和朝臣，倒了一片。
这特么唐疯子就是唐疯子，他是什么都敢想，什么都敢说。
而且
为什么我们是蛮夷啊？
为什么不是“做为大宋如何反击呢？”
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