Chromium is a major strategic mineral widely used in industrial processes, yet mineral resources are decreasing, calling for advanced recycling techniques to recover chromium from ores, waste and contaminated media. Here, we review chromium resources and methods to leach out Cr, such as calcium-roasting, sodium-roasting, acidic leaching, alkaline leaching and sub-molten technology.

中文翻译：

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钙焙烧，钠焙烧，酸性浸提，碱性浸提和亚熔融技术回收铬的研究进展

铬是一种广泛用于工业过程的重要战略矿物，但矿产资源却在减少，需要先进的回收技术从矿石，废物和受污染的介质中回收铬。在这里，我们回顾了铬资源和铬的浸出方法，例如钙焙烧，钠焙烧，酸性浸出，碱性浸出和亚熔融技术。