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首页> 外文会议>XXI International Mineral Processing Congress >PROCESSING OF IRON ORE BY REVERSE COLUMN FLOTATION
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PROCESSING OF IRON ORE BY REVERSE COLUMN FLOTATION

机译：逆柱浮选法处理铁矿石

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摘要

The use of column flotation was considered for "reverse flotation" of iron ore, where the gangue (quartz) was recovered in the froth product from the column. The objective of this work was to determine which of several different column flotation technologies would be most suitable for this type of flotation operation. Studies were carried out using both the Jameson column, and the more conventional Deister column. It was found that a single stage of flotation with the Jameson column gave results comparable to a single stage of flotation with a conventional Wemco flotation cell, and so the Jameson cell was not pursued further. The laboratory-scale Deister column was found to perform well, and gave the best results in a two-stage rougher-cleaner configuration. However, there are often problems in scale-up of laboratory columns to plant scale, because the increase in height and the decrease in the height/diameter ratio at the larger scale allow more axial mixing and bubble coalescence, both of which degrade the column performance. Horizontal baffling has been shown to improve column performance by reducing axial mixing and breaking up large bubbles, and so the use of such baffles is recommended for full-scale columns in this type of application.
机译：考虑使用塔浮选法进行铁矿石的“反向浮选”，其中从塔中的泡沫产品中回收了脉石（石英）。这项工作的目的是确定几种不同的柱浮选技术中哪一种最适合这种浮选操作。使用詹姆逊柱和更常规的迪斯特柱进行了研究。已经发现，使用詹姆逊柱进行浮选的单阶段结果与使用常规Wemco浮选单元进行浮选的结果相当，因此不再进一步研究詹姆逊池。发现实验室规模的Deister色谱柱性能良好，并且在两级粗滤器配置中给出了最佳结果。但是，在实验室色谱柱按比例放大至工厂规模时通常会出现问题，因为在较大规模下，高度的增加和高度/直径比的减小会导致更多的轴向混合和气泡聚结，这两者都会降低色谱柱的性能。 。事实证明，水平折流板可通过减少轴向混合并破碎大气泡来改善色谱柱性能，因此，在此类应用中，建议将此类折流板用于全尺寸色谱柱。

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