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Gravity circuit improvements at Montana Tunnels

机译：蒙大拿州隧道的重力回路改进

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摘要

Gravity concentration at the Pegasus Gold/Montana Tunnels Mine, near Helena, MT, began in June 1991 when a coarse-scalping circuit was commissioned. It processes a small portion of the ball-mill circulating load to reduce the risk of gold particles that are too coarse to float from advancing to flotation. The circuit also cost effectively enhances overall gold recovery and payable gold ounces. This gravity circuit has been a major success, Since the circuit was commissioned, throughput has increased 30 percent. Several modifications and improvements were made during the last three years that allowed the gravity circuit to keep pace with higher tonnage. The overall approach to gravity concentration at Montana Tunnels has always been to optimize production rather than maximize the gold ounces produced. This philosophy has now yielded a circuit expansion and relocation project. It will allow for an estimated 50 percent increase in gravity gold production, while significantly reducing the unit costs of production.
机译：1991年6月，在粗磨规模的电路投产时，密歇根州海伦娜附近的Pegasus Gold / Montana隧道矿开始进行重力集中。它处理球磨机循环负荷的一小部分，以降低过大而无法浮起的金颗粒从前进到浮选的风险。该电路还具有成本效益，可提高总体金回收率和应付金盎司。该重力回路取得了巨大的成功。自从对回路进行调试以来，吞吐量提高了30％。在过去的三年中进行了几处修改和改进，使重力回路能够跟上更高的吨位。蒙大拿州隧道集中重力的总体方法始终是优化产量，而不是最大化生产的金盎司。这种理念现在产生了电路扩展和重新安置项目。据估计，这将使重力金产量增加50％，同时显着降低单位生产成本。

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