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This paper focused on the investigation of the mineralogical characteristics of rare earth minerals from Bayan Obo tailings during the roasting process in the presence of coal, Ca(OH)2 and NaOH. Roasting experiments and leaching experiments were carried out to study the decomposition of rare earth minerals. The results indicated that bastnaesite and monazite could be completely decomposed at 650 °C...
Emulsification troubled normal extraction process of rare earths due to the existence of non-rare earth impurities, especially Si, Al and Fe. Against this background, the effect of emulsification caused by Si, Al and Fe on the La extraction with saponification P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) in chloride medium was systematically investigated. A series of experiments were...
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