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浸出法采铜是我国冶金史上一项重要发明创造。2000年以前,在我国已经对铁置换铜有了认识。10世纪后期用于生产。12世纪初,每年浸出法生产铜500～1000吨,占全国产铜量的15～25％。铜的浸出方法以自然淋滤浸出为主,即收集山泉、溪流或矿坑中含铜酸性水加以利用。后来,使用了地面堆摊浸出。铜的回收方法是用铁来置换,多将含铜溶液在固定木槽或沟道内进行置换,也有的将含铜溶液在铁锅中加热煎熬。铁耗量每斤铜需用2～5斤。
Leaching method copper mining is an important invention in the history of metallurgy in China. Before 2000, iron substitution copper had been known in our country. The late 10th century for production. In the early 12th century, leaching method produced 500-1000 tons of copper per year, accounting for 15-25% of the total copper produced in the country. Copper leaching method to leaching the main leaching of nature, that is collected spring, stream or mine containing copper acid water to be used. Later, the use of ground heap leaching. Copper recovery method is to replace iron, copper solution will be more in the fixed channel or channel replacement, and some copper solution will be heated in the wok torture. Iron consumption per kg of copper required 2 to 5 pounds.