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绪言 1979年美国矿业局曾估计世界金的年产量大约是1220公吨,银的年产量大约是10,175公吨。由于世界上高品位、易处理的金、银矿石储量正在变得枯竭,金银提取工作正转向低品位、难处理的物料。根据矿冶协会的1981年提取冶金会议的专题论文目录,金银提取冶金的研究和生产技术主要致力于降低投资和生产费用,节约能耗和改善回收率。这些技术革新和改造中包括金银矿石的堆浸氰化法和适用于矿浆的炭浆(CIP)法。
INTRODUCTION In 1979, the U.S. Bureau of Mines estimated that the world gold output was about 1,220 metric tons per annum and that the annual production of silver was about 10,175 metric tons. Due to the world’s high-grade, easy-to-handle gold and silver ore reserves are depleting, gold and silver extraction efforts are turning to low grade, inaccessible materials. According to the catalog of monographs from the Mining and Metallurgical Association’s 1981 Metallurgical Conference, the research and production technologies for extraction of gold and silver are mainly focused on reducing investment and production costs, saving energy and improving recovery. These technological innovations and modifications include the heap and cyanidation of gold and silver ores and the CIP method for ore pulp.