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1 前言在评价堆浸项目的潜力时,主要的未确定因素是如何确定粗矿石中有用矿物回收的浸出率曲线,浸出的物料可以是采出的原矿或粗碎矿石。粗矿石现场试验存在的问题(特别对于新项目来说)是需要大规模和相当长的浸出时间才能获得准确的最终浸出率曲线。铜堆浸试验至少需要5000～50000t矿石。例如,肯勒各特(Kennecott),最近在尤他州宾厄姆·坎扬(Bingham Canyon)矿建造了一座90万吨的原矿堆浸试验厂,在这种粗矿生产中,最终浸出率的获得将需要几个月至几年
1 INTRODUCTION In assessing the potential of a heap leach project, the main undetermined element is how to determine the leaching rate profile for the recovery of useful minerals from the crude ore, which can be either raw ore or coarse crushed ore. The problems with field tests of crude ores (especially for new projects) require large and fairly long leaching times to obtain accurate final leaching rate curves. Copper heap leaching test requires at least 5000 ~ 50000t ore. Kennecott, for example, recently built a 900,000-ton ore heap leach pilot plant at the Bingham Canyon mine in Utah, where the final leaching rate The acquisition will take months to years