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五金(3/7)

木棍排立墙上,先以污潮泥晒干,舂筛细罗如面,一人疾手撒扌艳,众人柳棍疾搅,即时炒成熟铁。其柳棍每炒一次,烧折二三寸,再用则又更之。炒过稍冷之时,或有就塘内斩划成方块者,或有提出挥椎打圆后货者。若济阳诸冶,不知出此也。

凡钢铁炼法,用熟铁打成薄片如指头阔,长寸半许,以铁片束尖紧,生铁安置其上,(广南生铁名堕子生钢者妙甚。)又用破草履盖其上,(粘带泥土者,故不速化。)泥涂其底下。洪炉鼓鞲,火力到时,生钢先化,渗淋熟铁之中,两情投合,取出加锤。再炼再锤,不一而足。俗名团钢,亦曰灌钢者是也。

凡倭夷刀剑有百炼精纯、置日光檐下则满室辉曜者,不用生熟相和炼,又名此钢为下乘云。夷人又有以地溲淬刀剑者,(地溲乃石脑油之类,不产中国。)云钢可切玉,亦末之见也。凡铁内有硬处不可打者名铁核,以香油涂之即散。凡产铁之阴,其阳出慈石,第有数处不尽然也。

○锡

凡锡中国偏出西南郡邑,东北寡生。古书名锡为“贺”者,以临贺郡产锡最盛而得名也。今衣被天下者,独广西南丹、河池二州居其十八,衡、永则次之。大理、楚雄即产锡甚盛,道远难致也。

凡锡有山锡、水锡两种。山锡中又有锡瓜、锡砂两种,锡瓜块大如小瓠,锡砂如豆粒,皆穴土不甚深而得之。间或土中生脉充枞校致山土自颓,恣人拾取者。水锡衡、永出溪中,广西则出南丹州河内,其质黑色,粉碎如重罗面。南丹河出者,居民旬前从南淘至北,旬后又从北淘至南。愈经淘取,其砂日长,百年不竭。但一日功劳淘取煎炼不过一斤。会计炉炭资本,所获不多也。南丹山锡出山之阴,其方无水淘洗,则接连百竹为枧,从山阳枧水淘洗土滓,然后入炉。

凡炼煎亦用洪炉,入砂数百斤,丛架木炭亦数百斤,鼓鞲熔化。火力已到,砂不即熔,用铅少许勾引,方始沛然流注。或有用人家炒锡剩灰勾引者。其炉底炭末、瓷灰铺作平地,傍安铁管小槽道,熔时流出炉外低池。其质初出洁白,然过刚,承锤即拆裂。入铅制柔,方充造器用。售者杂铅太多,欲取净则熔化,入醋淬八九度,铅尽化灰而去。出锡唯此道。方书云马齿苋取草锡者,妄言也;谓砒为锡苗者,亦妄言也。

○铅

凡产铅山穴,繁于铜、锡。其质有三种,一出银矿中,包孕白银。初炼和银成团,再炼脱银沉底,曰银矿铅,此铅云南为盛。一出铜矿中,入烘炉炼化,铅先出,铜后随,曰铜山铅,此铅贵州为盛。一出单生铅穴,取者穴山石,挟油灯寻脉,曲折如采银矿,取出淘洗煎炼,名曰草节铅,此铅蜀中嘉、利等州为盛。其余雅州出钓脚铅,形如皂荚子,又如蝌斗子,生山涧沙中。广信郡上饶、饶郡乐平出杂铜铅,剑州出阴平铅,难以枚举。

凡银矿中铅,炼铅成底,炼底复成铅。草节铅单入烘炉煎炼,炉傍通管注入长条土槽内,俗名扁担铅,亦曰出山铅,所以别于凡银炉内频经煎炼者。凡铅物值虽贱,变化殊奇,白粉、黄丹,皆其显像。操银底于精纯,勾锡成其柔软,皆铅力也。

○附:胡粉

凡造胡粉,每铅百斤,熔化,削成薄片,卷作筒,安木甑内。甑下甑中各安醋一瓶,外以盐泥固济,纸糊甑缝。安火四两,养之七日。期足启开,铅片皆生霜粉,扫入水缸内。未生霜者,入甑依旧再养七日,再扫,以质尽为度,其不尽者留作黄丹料。

每扫下霜一斤,入豆粉二两、蛤粉四两,缸内搅匀,澄去清水,用细灰按成沟,纸隔数层,置粉于上。将干,截成瓦定形,或如磊艄恚待干收货。此物古因辰、韶诸郡专造,故曰韶粉(俗误朝粉)。今则各省直饶为之矣。其质入丹青,则白不减。揸妇人颊,能使本色转青。胡粉投入炭炉中,仍还熔化为铅,所谓色尽归皂者。

○附:黄丹

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