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紫砂壺窯之龍窯詳細介紹

紫砂壺的燒制方法有傳統方法和現代方法兩大類。傳統方法主要是燒窯,燒窯包括龍窯、倒焰窯、隧道窯等。現代方法主要是瓦斯窯和電窯兩種。

龍窯

在古代,紫砂壺的燒制依靠龍窯。龍窯是一種依山坡用磚砌筑成斜坡式的長條彎狀隧道,窯頭至窯尾沿山坡向上,因其形狀古人所說的龍而得名。龍窯的特點是結構簡單、用材方便、造價低廉、建造容易、投產較快;沒有固定的燒成帶,燒成點隨時間和溫度沿窯自上而下逐步移動;熱利用率較高。缺點是生產周期較長,燃料為松柴,耗損木材。

宜興龍窯的使用歷史非常悠久。據考古發掘資料,唐代有宜興澗深龍窯,宋代有宜興羊角山龍窯,明、清時期則有宜興歐窯。其中澗眾龍窯是最古老的,它位于丁蜀鎮澗深村,現存窯址為省級文物。而另一座可稱為“古董”的明代龍窯,位于前墅村,該龍窯至今仍活力旺盛,源源不斷地燒制出.'''批又一批紫砂新壺。在新中國成立初期,宜興地區有龍窯近百條,每日焰火熊熊,濃煙蔽日,年耗松柴量在25萬噸以上,是生產紫砂壺的主力。日前除了個別的龍窯還在使用外,這種傳統的燒制方法已不再采用。

用龍窯燒紫砂壺時,須先將陶坯裝入匣缽(耐火陶土制成),一窯可裝匣缽2880只,每個匣缽內可裝9把茶壺,每窯可燒制紫砂壺25920件。燒窯用松枝、硬柴,燒成溫度控制在1200度左右,生產周期約為4天。燒窯一般是多家窯戶合燒,大窯戶燒幾股,小窯戶幾家拼燒一股,湊滿一窯后合租共燒。

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