Russia and South Africa are the world’s leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by flotation of the platinum group minerals (PGMs) found in each country. A summary of some of the major challenges faced in each country in terms of the concentration of the ores by flotation is presented alongside the opportunities that exist to increase the production of the respective metals. These include the more efficient recovery of minerals such as arsenides and tellurides, the management of siliceous gangue and chromite in the processing of these ores, and, especially in Russia, the development of novel processing routes to recover PGEs from relatively low grade ores occurring in dunites, black shale ores and in vanadium-iron-titanium-sulphide oxide formations.

中文翻译：

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南非和俄罗斯的铂族矿物（PGM）浮选的地质赋存，矿物学和加工

俄罗斯和南非是铂族元素（PGEs）的世界主要生产国。这使它们在这两种主要工业商品的供应方面处于独特的位置。本文的目的是对每个国家发现的铂族矿物（PGM）的浮选进行地质，矿物学和选矿方面的比较性概述。概述了每个国家在浮选矿石浓度方面面临的一些主要挑战，以及增加相应金属产量的现有机会。这些措施包括更有效地回收砷化物和碲化物等矿物，处理这些矿石时处理硅质脉石和铬铁矿，尤其是在俄罗斯，