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芒特·戈登(Mount Gordon)浸出厂自1998年中期投产以来,一直处理埃斯佩兰萨(Esperanza)高品位块状硫化铜矿。该厂为了降低成本、增加产量进行了很多改进,目前产能已增长到52000t/a。随着多年的开采,埃斯佩兰萨露天矿几乎全部采完,已开始开采和处理冒莫斯(Mammoth)地下矿。冒莫斯矿平均铜品位为3%～4%,不适合用浸出工艺处理原矿,为此增加了磨矿能力并增设了一个浮选段,包括1台闭路球磨机,一组粗浮选槽以及1台尾矿脱水浓密机。本文介绍这些车间的设计、安装和投产情况,以及这些改进对工艺运行成本的影响。
The Mount Gordon leacher has been processing Esperanza high-grade massive sulphide copper ores since it was put into operation in mid-1998. The plant in order to reduce costs, increase production has been a lot of improvement, the current production capacity has grown to 52000t / a. With years of mining, nearly all of Esperanza’s open pit has been mined and mining and handling of the Mammoth underground mine has started. The average copper grade in the Mauss mine is 3% to 4% unsuitable for the leaching process, which increases grinding capacity and adds a flotation section including a closed-circuit ball mill, a set of coarse flotation cells and 1 tailings dewatering thickener. This article describes the design, installation, and commissioning of these plants, and the impact these improvements have on process operating costs.