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Study on Extraction of Lanthanum Oxide from Monazite Concentrate

Authors: Nwe Nwe Soe, Lwin Thuzar Shwe, Kay Thi Lwin


Lanthanum oxide is to be recovered from monazite, which contains about 13.44% lanthanum oxide. The principal objective of this study is to be able to extract lanthanum oxide from monazite of Moemeik Myitsone Area. The treatment of monazite in this study involves three main steps; extraction of lanthanum hydroxide from monazite by using caustic soda, digestion with nitric acid and precipitation with ammonium hydroxide and calcination of lanthanum oxalate to lanthanum oxide.

Keywords: Precipitation, Digestion, calcination

Digital Object Identifier (DOI):

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