By Jack Zhang, Baodong Zhao, Bryan Schreiner
This publication describes in a accomplished demeanour the technical features of separation of infrequent earth parts into person components for business and advertisement use. The authors contain info on and differentiate one of the potent separation of infrequent earth parts for varied elements of the realm. They introduce new functions of separation of infrequent earth parts from concentrates of various ore types.
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Extra resources for Separation Hydrometallurgy of Rare Earth Elements
2 HCl Acid Leaching Dilute HCl is used to dissolve calcium carbonate and concentrated HCl is used to decompose bastnaesite. The major reaction of the latter type is shown by Eq. 15). 3 Hydrometallurgical Processing of Rare Earth Mineral Concentrate 47 Rare Earth Mineral Concentrate (-100 µm) Dilute HCl Acid Dilute HCl Washing Concentrated HCl Acid O/F Effluent Concentrated HCl Decomposition Thickenging Washing NaOH Decomposition Filtration and Washing RECl3, HCl Solution Effluent RE(OH)3 RECl3 Solution Fig.
Typical metallurgical results are a final concentrate grade of 49 % with recovery of about 35 %. 19. The Option 2 process has similar metallurgical results. The Mount Weld mine officially opened in 2011. The process used is not public information. It is probably a hybrid of the two process schemes, incorporating the best features of each. Mount Weld intends to supply 11,000 ton REO in phase I and 22,000 ton REO in phase II. Full capacity production from phase I is expected in 2012 (Latimer 2011).
Flotation is the most common concentration process. A collector with good selectivity for bastnaesite and an effective depressant for other ore minerals are required. Bastnaesite concentrate can also be obtained through a combination of gravity-flotation or magnetic-flotation processes. 1 Eastern China WS Rare Earth Deposit The WS rare earth deposit mineral veins contain bastnaesite, parisite, Ce-apatite, monazite, arfvedsonite, chalcopyrite, pyrite, molybdenite, galena, sphalerite, magnetite, and perovskite.