Comparison of production of mixed rare earth oxide (Nd/Pr oxide) powders by different precipitation agents from NdFeB magnets’ water leaching
نویسندگان
چکیده
This research compared the production processes for mixed rare earth oxide (Nd/Pr oxide) powders from a leach solution obtained acid baking with nitric followed by water leaching. Furthermore, precipitation behaviour of constituent elements in liquor was examined. Development economically feasible is significant on an industrial scale. In this regard, Nd/Pr were recovered using oxalic acid, ammonium (C2H2O4), sodium hydroxide (NaOH), and hydrogen carbonate (NH4HCO3) comparative manner. Experimental investigations showed behavioural similarities between C2H2O4 NH4HCO3 agents; they precipitate (REEs), selectively. However, NaOH different them as it precipitates liquor. The cost scale higher than NaOH. resulting flow diagrams preparation comprehensively optimised to propose more environmentally friendly, economical, sustainable process.
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ژورنال
عنوان ژورنال: Canadian Metallurgical Quarterly
سال: 2023
ISSN: ['0008-4433', '1879-1395']
DOI: https://doi.org/10.1080/00084433.2023.2242115