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勒夫诺伊(Lefroy)金选矿厂属于南非金田有限公司的圣伊维斯(St.Ives)黄金采矿公司所有和运作。金田公司于2001年12月从WMC资源有限公司购买了圣伊维斯矿山。在购买了一项可行性研究以后,他们立刻开始着手提高现有选矿厂的处理能力和减少单位操作成本工作。在详细分析选矿方案之后,放弃了原有的选矿厂,推荐建设一座新的具有更大处理能力的选矿厂,因为一个新的选矿厂可以具有更经济的选择方案。这个选矿厂建在离主要的未来矿石资源地很近的地方。选矿厂靠近未来矿石资源地对运输成本的降低很有好处。设计一个新选矿厂具有更多的灵活性,以便将来更容易扩建它。在12个月内建成了勒夫诺伊选矿厂,并完成了主要的试生产工作。在投产后的很短时间内,选矿厂就达到设计的生产能力和设计的金回收率。在关键的设计目标达到后,就对选矿厂冶金过程进行优化研究。执行先进的控制策略可以大幅度提高选矿厂指标。
The Lefroy Gold Concentrator is owned and operated by the St.Ives Gold Mining Company of Gold Fields, South Africa. Gold Fields purchased the St. Yves mine from WMC Resources Ltd. in December 2001. After purchasing a feasibility study, they immediately began work on improving the processing capacity of the existing concentrator and reducing unit operating costs. After a detailed analysis of the beneficiation program, the original concentrator was abandoned and a new concentrator with greater processing capacity was recommended as a new concentrator could have a more economical option. This concentrator is built close to major future ore sources. Beneficiation of beneficiation plants near the future ore resources is good for the reduction of transportation costs. Designing a new concentrator gives more flexibility for easier expansion in the future. Within 12 months, the Leuvenoy beneficiation plant was completed and the main pilot production was completed. In a very short period of time after commissioning, the concentrator reaches the designed production capacity and the designed gold recovery rate. After the key design goals have been achieved, the metallurgical process of the concentrator is optimized. The implementation of advanced control strategies can greatly improve the dressing plant indicators.