広島大学大学院文学研究科考古学研究室紀要 Issue 7
published_at 2015-07-30

リモナイトによる製錬実験(1) <考古学研究室の調査研究: 研究ノート>

Experimental Iron Production using Limonite Ore <Research and Studies at the Department of Archaeology: Research Note>
Hirao Hideki
fulltext
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Koukogakukenkiyo_7_85.pdf
Abstract
Since 2006, experiments in iron manufacture were continuously carried out at Archaeology Laboratory of the Hiroshima University’s Graduate School of Letters. This was part of a broader research project on ancient iron production. In September 2014, we used two earthen charcoal braziers to fashion simple smelting furnaces. A ventilator maintained airflow, and we layered limonite (brown hematite) and charcoal into the furnaces, for purposes of smelting. We performed two experiments each lasting two hours. In the first experiment, we maintained a temperature of around 1150°C at the base of the furnace, and used a total of 500g of limonite ore. In the second, we maintained a temperature of around 1200°C, and used a total of 960g of limonite ore. In both experiments, we observed changes in the products. The experiments yielded approximately 66.2g of a ferruginous substance in the first operation, and 84.9g in the second. We conducted a comparative analysis of the two smelting operations, and noted differences in the size and magnetic responses between them.
Descriptions
本論文のリモナイトを使った製鉄実験は、科学研究費補助金(基盤研究(C))「弥生時代鍛造鉄器の生産と流通に関する考古学的研究」(研究課題番号:26370895)によるものである。