ABSTRACT Iron ore tailings dams at Quadrilátero Ferrífero, Minas Gerais (MG), Brazil, are full and present significant risks. The material contains approximately 30% of the iron, and recovering this iron is important in decreasing the environmental impact and increasing production. The objective of the present work was to study magnetic concentration of processing plant tailings. Pilot tests optimized the processing configuration, but the planned iron grade was only possible with cleaning stages. Industrial tests were configured into three concentration stages (rougher, cleaner, and recleaner), and obtained a 63% iron grade concentrate representing a mass recovery of around 15%.

中文翻译：

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用于从沉积在大坝中的尾矿中回收铁的湿式高强度磁选机 (WHIMS)

摘要 巴西米纳斯吉拉斯州 (MG) Quadrilátero Ferrífero 的铁矿石尾矿坝已满载，存在重大风险。该材料含有大约 30% 的铁，回收这些铁对于减少环境影响和提高产量很重要。目前工作的目的是研究加工厂尾矿的磁性浓缩。中试优化了加工配置，但计划中的铁品位只能在清洁阶段进行。工业测试被配置为三个浓缩阶段（粗选、清洁和再清洁），获得了 63% 的铁品位精矿，质量回收率约为 15%。