Frother distribution in Flotation Circuits

贱金属的生产是基于对感兴趣的矿物的颗粒进行浓缩，这些矿物产生于 研磨矿石。在可用于选择性分离颗粒的几种技术中，浮选目前是 使用最多的，因为它效率高，成本低。直布罗陀矿是一种低品位、粗磨矿 运营；通过保持吞吐量和恢复来保持其经济可行性是当前的首要任务。 由于粗颗粒分数的损失增加，生产正受到不利影响，而且随着 在这个阶段，研磨能力不是一个可行的选择，工作重点是寻找起泡剂和剂量 这提高了电池性能；McGill在起泡剂分析和起泡剂作用上的应用 定性提供了在这一追求中迅速找到替代方案的机会。同样重要的是要考虑到 即使在使用合适的起泡剂的情况下，浮选回路的性能也取决于电池的性能 手术和发泡剂送来了。麦吉尔发起的工厂工作，表明即使是个人的生产 电池可以带来最佳的电路性能，已经在一些工业现场进行了演示，主要 产量和收入的增加。理论计算表明，使用或不使用该选项的效果 概念对于较短的单元格来说更为重要，直布罗陀地雷就是这种情况。该项目旨在 通过表征还原过程中的起泡强度，为选择更有效的起泡剂收集信息 气泡大小和泡沫稳定性的发展，并建议发泡剂输送和槽操作 降低起泡剂消耗、提高回收率和选择性的战略；测试新的起泡剂和 可以快速评估不同的交付和运营策略，只需对 巡回赛。加拿大被公认为是描述#年发生的现象的带头人之一。 矿物浮选，因为它的几所大学对目前的技术水平做出了重大贡献。 促进技术转让以测试最近的发展只会有助于维持麦吉尔和加拿大 该领域的领军人物。

The production of base metals is based on concentrating particles of the mineral of interest generated by grinding the ore. Of the several technologies available for selectively separating particles, flotation is currently the most used, because of its high efficiency and low cost. Gibraltar Mine is a low-grade, coarse grinding operation; retaining its economic viability by keeping throughput and recovery is the top current priority. Production is being adversely affected by increasing losses in the coarse particle fraction, and as increasing grinding capacity is not a viable option at this stage, efforts are focused on searching for frothers and dosages that increase cell performance; the application of McGill work on frother analysis and frother roles characterization offers an opportunity to rapidly find alternatives in this pursuit. It is also important to consider that the performance of a flotation circuit, even when proper frothers are in use, depends on how cells are operated and frothers delivered. Plant work initiated by McGill, suggesting that even production in individual cells leads to optimum circuit performance, have been demonstrated at some industrial sites with major increases in production and revenue. Theoretical calculations demonstrate that the effect of using or not this concept is more significant for shorter lines of cells, which is the case at Gibraltar Mine. This project aims to collect information for selection of more effective frothers, by characterizing frother strengths in the reduction of bubble size and in the development of froth stability, and to propose frother delivery and cell operating strategies leading to lower frother consumption and higher recovery and selectivity; testing of new frothers and different delivery and operating strategies can be quickly assessed with minor or likely no changes to the circuit. Canada is recognized as one of the leaders in the characterization of the phenomena occurring in mineral flotation as several of its universities have made major contributions to the current state of the art. Facilitating technology transfer to test recent developments can only help to maintain McGill and Canada leading roles in the field.