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Sorting Pilbara Manganese Ores - Do Your Homework and Understand the Mineralogy

机译：排序Pilbara Manganese Oses - 做你的作业并了解矿物学

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Manganese ores at the Woodie Woodie operation are understood to be fairly coarsely liberated up to 75 mm in particle size. With increasing iron levels present in recently mined ores, it was necessary to develop a simple method of separating iron minerals from manganese minerals. Unfortunately, finding a separation method is a challenge as nearly every physical property used in the mineral separation of iron and manganese is the same.A few different methods of separation were explored. The first using electromagnetics as it was discovered that manganese particles can be detected through electromagnetic induction, whereas the gangue minerals of iron and silica cannot. Another ore sorting technique was based on exploiting the colour difference, manganese being black and the iron ore being red.Several full-scale equipment tests indicated reasonable success and a pilot scale plant was developed and built to trial the effectiveness of sorting various Woodie Woodie lump ores employing electromagnetic separation and Near Infra-Red (Colour / NIR).Best efforts were employed to overcome numerous feed preparation issues but ultimately the complex manganese mineralogy proved that no ore sorting technique was economically viable for Woodie Woodie ores. This paper discusses the testing and pilot plant program and provides practical tips and points out pitfalls that may be encountered when applying ore sorting technology to complex mineral deposits.
机译：在Woodie Woodie操作中的锰矿石被理解为在粒度中相当粗略地释放到75毫米。随着最近开采的矿石中存在的铁水量增加，有必要开发一种将铁矿物分离锰矿物的简单方法。不幸的是，发现分离方法是几乎所有用于铁和锰的矿物分离中使用的物理性质的挑战是相同的。探讨了很少有不同的分离方法。首先使用电磁学被发现通过电磁感应可以检测锰颗粒，而铁和二氧化硅的甘蓝矿物质不能。另一个矿石分类技术是基于利用颜色差异，锰是黑色的，铁矿石是红色的。全尺寸设备测试表明合理的成功，开发了一个飞行员规模植物，以试验分类各种伍迪伍迪块的有效性使用电磁分离和近红外线（颜色/尼尔）的矿石。使用努力克服许多饲料制备问题，但最终是复杂的锰矿物，证明没有矿石分拣技术对于Woodie Woodie Ores而言是经济上可行的。本文讨论了测试和试点工厂计划，并提供了实用的提示，并指出在将矿石分选技术应用于复杂的矿物沉积物时可能遇到的陷阱。

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