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第184章 投石机与火药(2 / 2)

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景灵笑道:“看看诗书,也不闷,倒是睿哥儿今日回来说李才人请奴家进宫叙话,先生说去还是不去。”

本小章还未完,请点击下一页继续阅读后面精彩内容!吴梦道:“去吧,那也是个可怜的良善女人,去陪陪她吧。”

景灵奇道:“李才人可怜?”

吴梦自知失言,忙掩饰道:“说错了,深宫大院里其实也甚是枯寂,应该是寂寞。”

夜里他画了两幅投石机的图纸,准备明日交给刘锴。

翌日,丁睿和陈坤去给弓弩院的工匠上课,吴梦又随着刘锴和周嘉正来到了火器作。

大宋的工坊管理还是很正规,火器作的火药工坊也建在河边,便于取水灭火,每个工位之间隔的很远,工匠们不得带金属器物入内。

吴梦看到他们的配方已经全部改用了自己写的配比,不再用那些奇奇怪怪的添加剂了。

吴梦仔细检查了原料,发现硫磺矿品种不一,看样子是从不同的矿山采集而来,最好的硫磺矿在日本,有许多流入了大宋。

上次在苏州做鞭炮时用的硫磺明显比京城的硫磺纯净许多,苏州靠海,极有可能是日本海贸过来的硫磺,而京师的硫磺成色不好,还得提纯。

他对周嘉正道:“周判官,这硫磺需要提纯,请几个工匠过来,某来教教他们。”

硫磺提纯有很多方法,水煮法、油煮法,还有真空蒸馏法,或是土高炉烧结。

高温蒸发硫磺再搞气体沉积提纯颇为麻烦,油煮费油,真空蒸馏那是天方夜谭,还是用水煮法算了,土高炉让作坊自己去搭建。

水煮法很简单,三四十斤硫磺加水五、六碗,加热融化,硫的熔点是118.2℃,水分带着硫磺粉内的各种酸一起蒸发,继续加热,硫磺粉融化,然后倒入陶缸内,上层的硫磺液体比较纯净,俗称“黄稍”,黄稍可以直接使用。

下层的灰渣可以继续加水提纯,直到没有黄稍为止。

吴梦教了一遍便没有管工匠们如何操作,他来到值房,画了一个简单的土高炉,实际上和炼铁的高炉非常类似,只是不要鼓风罢了。

吴梦随后又写出用蛋清来实现火药颗粒化的法子,交给作坊使道:“以后新进来的硫磺矿看成色,成色差的先用高炉烧上一次,再用水煮法提纯,至于火药颗粒化也无甚蹊跷,甚是简易,只是后期火药烘干须得用铁皮卷制的蒸汽管道来弄,切不可用明火。”

作坊使拱手抱拳连连应诺。

走出工坊,吴梦打量了一番望,见四周皆为军营驻地,稍远处还可望见东京城的佛塔酒楼。

吴梦眉头紧皱,此处仓库内储存如此之多的火药,而东京城里人口密度极大,万一爆炸那可是塌天大祸。

以前的火药是杂质太多,爆炸也没有什么威力,现在可不一样了,经过提纯后的原料和科学的配比,比原来火药的威力大得多了。

吴梦想想后世北京王恭厂大爆炸一事顿时不寒而栗,不行,火药工坊一定得搬出城去。

他严肃的对着刘锴道:“刘副使,在下有个建议,火药工坊务必搬往城外,最好找个偏僻的山谷设立工坊,放在东京城内太过危险。”

刘锴道:“吴先生,此事本官可做不了主,还须陛下点头。”

吴梦道:“刘副使,作坊里的火药一旦爆炸,死伤可是无数,万万不可掉以轻心。”

刘锴不太相信,哂笑道:“吴先生言重了,火药不过尔尔,没有先生说的那般可怕。”

吴梦知道不给他们看到结果定然没人相信,说道:“那便如此,刘副使且让火器作配上八百斤新式火药,去找找孙副使砌上一段城墙,再带上一具棺材,在下让刘副使见识见识用火药如何攻城。”

刘锴半信半疑答应按照吴梦的吩咐去准备,心下却有些不以为然。

分手时吴梦给了刘锴两份昨夜画出的图纸,一份是回回炮的,一份是小型弹簧绞盘式抛石机的,并叮嘱道:“大型抛石机打造几个样机即可,不攻城没啥用处,弹簧抛石机可攻城,也可守城,轻巧的很,还可跟随步军野战,对骑兵威胁最大,可多多打造。”

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