Characterization and recovery of gravity-recoverable platinum group minerals

重力可回收铂族矿物的表征和回收

• 批准号: 1278-2006
• 负责人: Laplante, André
• 金额: $ 2.37万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=331508
• 关键词: Characterization; recovery; gravity; recoverable; platinum

Many platinum group minerals (PGMs)have a high density and accumulate in grinding circuits, even at fine size (25 µm).  These are gravity-recoverable PGMs, or GRPGMs.  They risk either overgrinding and/or surface ageing, both resulting in a loss of efficiency in the downstream flotation circuit, where they should normally be recovered.  The present proposal aims at characterizing the PGMs, understanding their behaviour better, eventually to model their recovery from the grinding circulating loads by centrifuge or flash flotation recovery.  The effort will focus on the Sudbury basin, where GRPGMs are abundant and known to display the above behaviour.  Efforts of a previous discovery grants were aimed at characterization and study of their deportment in grinding circuit.  The present effort will complete the characterization work and focus on actual recovery.  Bench and pilot scale test work will focus on grinding kinetcis, floatability and response to centrifuge separation.

许多铂族矿物（PGMs）密度很高，即使在细粒度（25 µm）时也会在磨矿回路中积聚。这些是重力可回收的PGMs或GRPGMs。它们存在过度研磨和/或表面老化的风险，这两种风险都会导致下游浮选回路的效率损失，而这些回路通常应回收它们。本提案旨在表征PGMs，更好地了解它们的行为，最终通过离心或快速浮选回收来模拟它们从研磨循环负荷中的回收。这项工作将集中在萨德伯里盆地，在这些地区，GRPGMs含量丰富，并且已知会显示上述特性。先前的发现赠款旨在表征和研究其在研磨回路中的行为。目前的工作将完成表征工作，并专注于实际回收。Bench中试工作将集中在磨矿动力学、可浮性和对离心分离的响应。