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Ancient activated carbon furnace discovered in central China



Archaeologists have discovered a decarbonizing furnace dating back to the war era (475 BC-221 BC) in the Houduanwan Cast Iron Antiquities Area in central China's Henan Province.The site in Xinzheng is the official workshop for tool and weapon casting for the Han State. which opened during that time

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Experts also detected spherical graphite in the unearthed ironware. It was found to be processed by separating the carbon from cast iron and other processes. According to the Henan Provincial Institute of Cultural Heritage and Archaeology.

Over 20 antiques related to the cast iron handicraft industry. Many models of pottery and iron were among other items. Numerous discoveries have been made related to iron casting.Fan Wenquan, a researcher at the institute, said: "These findings show that China has mastered wrought iron technology since the early days