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考古调查已认定九华山古铜矿冶遗址年代为唐代。通过对６７个渣样的理论分析和模拟实验，笔者对九华山唐代的冶炼技术进行了复原。九华山有高钙和高铁两种冰钢渣，二者在随机取样时出现的比例约为７．４：１。高钙渣是熔炼脉石含钙的含铜黄铁矿（经焙烧）得到品位约为２５％的冰铜的炉渣，高铁渣是将品位为２５％的冰铜焙烧后熔炼成品位的４０％的冰铜的炉渣。物料平衡计算揭示的冶炼流程显示，含铜约６％的手选矿石要经历两次部分脱硫焙烧、两次鼓风炉熔炼，才能先后炼成品位为３５％和４０％的两种中间产物冰铜。九华山古铜矿冶遗址的研究表明，宋明时期文献《大冶赋》、《菽国杂记》所记载的使用“硫化矿—冰铜—铜”工艺冶炼低品位含铜黄铁矿的技术在唐代就已存在并已成熟。
Archaeological investigation has identified Jiuhuashan bronze smelting sites for the Tang Dynasty. Through the theoretical analysis of 67 slag samples and simulation experiments, the author of Jiuhuashan smelting technology was restored. Jiuhuashan high calcium and high-speed rail with two kinds of ice slag, the two random sampling occurs when the ratio is about 7.4: 1. High calcium slag is melting furnace gangue pyrite containing copper (calcined) to obtain the grade of about 25% matte slag, iron slag is the grade of 25% of matte roasting after smelting into the grade of 40% Matte slag. The smelting process revealed by the material balance calculation shows that about 6% copper-containing hand-chosen ore undergoes two partial desulphurization roasting and two blast furnace smelting before it can successively produce two kinds of intermediate matte grades of 35% and 40% grade. The research on Jiuhuashan bronze mines and smelters shows that the technology of smelting low grade copper-bearing pyrite using “sulphide ores-matte-copper” process documented in the documents “Daye Fu” and “Guoguang” of the Song and Ming Dynasties In the Tang Dynasty already exists and has matured.