Abstract:The exchangeability of rare earth (RE) in weathered crust elution-deposited rare earth ores largely depends on its interaction with clay minerals, which may be significantly influenced by various cations. Therefore, the effects of K<sup>+</sup>, Ca<sup>2+</sup> and Al<sup>3+</sup> on RE<sup>3+</sup> adsorption and desorption in binding sites of montmorillonite (MMT) were investigated. Through the pre-saturation, the interlayer ions of MMT had been replaced by K&l… Show more
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