ABSTRACT Improving utilization efficiency of refractory iron ore resources is a common theme for the sustainable development of the world’s steel and iron industry. Magnetization roasting is considered as an effective and typical method for the beneficiation of refractory iron ores. After magnetization roasting, the weakly magnetic iron minerals, including hematite, limonite and siderite, are selectively reduced or oxidized to ferromagnetic magnetite, which is relatively easier to enrich by magnetic separation after liberation pretreatments. The primary magnetization roasting methods include shaft furnace roasting, rotary kiln roasting, fluidized bed roasting, and microwave assisted roasting. This review highlights the developments in magnetization roasting of difficult to treat iron ores, including shaft furnace roasting, rotary kiln roasting, fluidized bed roasting, and microwave assisted roasting in the past decade. Fluidized bed roasting and microwave assisted roasting are considered as the most effective and promising methods, which is essential to be reviewed. Meanwhile, the effective and future magnetization roasting technologies are recommended throughout this review.

中文翻译：

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难熔铁矿磁化焙烧新进展：十年技术回顾

摘要 提高难选铁矿石资源的利用效率是世界钢铁工业可持续发展的共同主题。磁化焙烧被认为是选矿难选铁矿石的一种有效且典型的方法。赤铁矿、褐铁矿和菱铁矿等弱磁性铁矿物经过磁化焙烧后，被选择性还原或氧化成铁磁性磁铁矿，经过解放预处理后，相对容易通过磁选富集。主要的磁化焙烧方法包括竖炉焙烧、回转窑焙烧、流化床焙烧和微波辅助焙烧。这篇综述重点介绍了难处理铁矿石磁化焙烧的发展，包括竖炉焙烧、回转窑焙烧、在过去的十年中，流化床烘焙和微波辅助烘焙。流化床焙烧和微波辅助焙烧被认为是最有效和最有前途的方法，值得回顾。同时，在这篇综述中推荐了有效的和未来的磁化焙烧技术。