Rare earth elements from coal and coal discard – A review

Given the geographical imbalance distribution and supply shortage of rare earth elements (REEs) in renewable energy processes, magnets, many high-tech technologies, etc., researchers are increasingly seeking to recover REEs from unconventional sources such as coal and coal by-products. This article provides a brief overview of the REEs mode of occurrence and its association in coal. It also discusses existing and potential beneficiation...