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.

碱金属的生产基于由利益矿物的浓缩颗粒产生的 研磨矿石。在有选择性分离粒子的几种可用的技术中，浮选目前为 最常用的，因为它的效率很高和成本低。直布罗陀矿是一种低级，粗磨 手术;通过保持吞吐量和恢复来保留其经济生存能力是当前的首要任务。 生产受到粗略颗粒分数中损失增加的不利影响，并且随着增加 在此阶段，打磨能力不是一个可行的选择，而是专注于寻找易腐烂的剂量 增加细胞性能； McGill工作在作品分析和起点角色上的应用 特征提供了一个机会，可以快速在此追求中找到替代方案。考虑也很重要 即使使用适当的粉丝，浮选电路的性能也取决于细胞的状态 运营并交付了兄弟。麦吉尔发起的工厂工作，表明即使是个人的生产 细胞导致最佳电路性能，在某些具有主要的工业场所已证明 生产和收入增加。理论计算表明使用是否使用 概念对于较短的细胞线更为重要，在直布罗陀矿山上是这种情况。这个项目旨在 收集信息以选择更有效的兄弟，通过表征降低的实体优势 气泡尺寸和泡沫稳定性的发展，并提出了起泡和细胞运行 策略导致较低的起泡量以及更高的恢复和选择性；测试新兄弟和 可以通过次要或可能没有更改的交付和操作策略来快速评估 电路。加拿大被认为是表征发生现象的领导者之一 由于其几所大学为当前的最新状态做出了重大贡献，因此矿产浮动。 促进技术转移以测试最近的发展只能有助于维持麦吉尔和加拿大 该领域的主角。