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曼托维蒂(Mantoverde)是一家堆浸-溶剂萃取-电积厂,投产于1995年12月份,每年产铜42130t,矿石处理量540万t。该厂铜产量稳步增长,已于2002年达到57290t。预计到2003年可处理铜矿石850万t,产铜60000t。该厂已经对堆浸工艺实施了一些改进。主要工艺改进有矿堆高度、废石粒度、冲洗率和浸出周期,另外改善了矿堆排水设计和溶液管理系统。第一次废石堆浸操作开始于1999年,铜产量为1922t。第二次废石堆浸操作开始于2002年初,铜产量为2805t。铜的废石堆浸产量将随着时间增加到24000t。本文详述了矿石堆浸工艺较之原工厂设计所做的主要改进以及主要的废石堆浸操作参数。
Mantoverde is a heap leaching-solvent extraction-electrowetting plant, which was put into operation in December 1995. It produces 42,130 tons of copper a year and its ore handling capacity is 5.4 million tons. The steady growth in copper output of the plant reached 57,290 tons in 2002. It is estimated that by 2003, 8.5 million tons of copper ore can be processed and 60,000 tons of copper can be produced. The plant has implemented some improvements to the heap leaching process. Major process improvements include mine height, waste rock size, flushing rate and leaching cycle, as well as improved mine drainage design and solution management system. The first waste rock heap leaching operation began in 1999, the copper output was 1922t. The second waste heap leaching operation began in early 2002, the copper output was 2805t. Copper waste pile heap production will increase over time to 24000t. This paper details the main improvements of the ore heap leaching process compared to the original plant design and the main operating parameters of the waste rock heap leaching.