Frother distribution in Flotation Circuits

浮选回路中的起泡剂分布

• 批准号: 484318-2015
• 负责人: Finch, James
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=584237
• 关键词: Frother; distribution; Flotation; Circuits

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.

贱金属的生产是基于对感兴趣的矿物颗粒的浓缩， 研磨矿石。在可用于选择性地分离颗粒的几种技术中，浮选目前是优选的。 最常用的，因为它的效率高，成本低。直布罗陀矿属于低品位、粗磨矿 通过保持吞吐量和回收率来保持其经济可行性是当前的首要任务。 生产受到粗颗粒部分损失增加的不利影响， 研磨能力在现阶段不是一个可行的选择，努力的重点是寻找起泡剂和剂量 提高电池性能;应用麦吉尔的起泡剂分析和起泡剂的作用 表征提供了在这种追求中快速找到替代方案的机会。还必须考虑 浮选回路的性能，即使在使用适当的起泡剂时，也取决于单元如何被 操作和泡沫交付。麦吉尔发起的植物研究表明，即使是个体生产， 电池导致最佳的电路性能，已经在一些工业场所得到证明， 增加生产和收入。理论计算表明，使用或不使用此 这一概念对于较短的单元线更有意义，直布罗陀矿就是这种情况。该项目旨在 通过表征还原过程中起泡剂的强度，收集信息以选择更有效的起泡剂 气泡大小和泡沫稳定性的发展，并提出起泡剂输送和细胞操作 降低起泡剂消耗和提高回收率和选择性的策略;测试新的起泡剂， 不同的交付和运营策略可以快速评估， 电路.加拿大被公认为是描述1990年代发生的现象的领导者之一。 矿物浮选，因为它的几个大学作出了重大贡献，目前的艺术状态。 促进技术转让，以测试最近的发展，只能帮助保持麦吉尔和加拿大 在该领域发挥主导作用。