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首页> 外文会议>International Congress on Applied Mineralogy in the Minerals Industry >PROCESS MINERALOGY STUDIES OF LOW GRADE IRON ORES USED IN THE PRODUCTION OF PELLET FEED
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PROCESS MINERALOGY STUDIES OF LOW GRADE IRON ORES USED IN THE PRODUCTION OF PELLET FEED

机译：工艺矿物饲料生产低等级铁矿石的矿物学研究

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The study was conducted on low grade Brazilian iron ores to determine the liberation of iron oxides and their associations to the gangue minerals, especially silica, aluminum, and phosphorus bearing minerals. The mineralogical composition of the sample, the degree of liberation and the phase associations of the iron minerals as well as the partition of the main elements and the potential iron recovery were assayed by size fractions through automated image analysis paired with a scanning electron microscope. Despite the variations in iron distributions in the minerals of interest (29 to 61 t%, or up to 95 wt% if goethite is considered), the results indicated the possibility of attaining products with Fe-total grades higher than 65 wt% associated with potential recoveries of around 80 to 85 wt%. Using this approach, the characterization studies proved to be important in predicting metallurgical recovery related to the ore mineral processing and in identifying factors that may interfere with the quality of the final product.
机译：该研究在低等级的巴西铁矿石上进行，以确定氧化铁的解放及其与甘蓝矿物质，特别是二氧化硅，铝和磷含矿物的联合。通过用扫描电子显微镜配对的自动图像分析，通过与扫描电子显微镜配对的自动图像分析测定样品的矿物质细胞和铁矿物的分配和主要元素的分区和潜在的铁回收率。尽管感兴趣的矿物质中的铁分布（如果考虑到Goethite，但是，如果考虑过95％，或者高达95重量％），但结果表明，达到高于65重量％的Fe-总等级的产品的可能性潜在回收率约为80至85重量％。使用这种方法，表征研​​究证明是在预测与矿石矿物加工相关的冶金恢复以及识别可能干扰最终产品质量的因素的冶金恢复是重要的。

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