| Summary | |
| A method for extracting rare earth elements from a rare earth ore leaching solution, characterized in that a multistage countercurrent extraction system extracted from 2-ethylhexyl phosphonic acid mono (2-ethylhexyl) ester sulphonated coal oil composition, and then The hydrochloric acid is subjected to multi-stage countercurrent stripping to obtain a rare earth chloride product. The invention has low pollution and low cost, and can realize automatic continuous operation. | |
| Sovereignty | |
| A method for extracting rare earth elements from an acidic solution containing a low concentration of rare earth elements, comprising multistage countercurrent extraction of rare earth elements in an aqueous phase with a phosphorus extraction system, and multistage treatment of the supported organic phase with an acid solution countercurrent extraction, thereby obtaining a rare earth compound, wherein: (1) the acidic solution containing a low concentration of rare earth elements may leaching leachate on product type in dilute weathering shell, prior to extraction aforementioned leaching solution was removed iron by controlling the PH value , aluminum, copper, lead and metal impurities; (2) the phosphorus-based extraction system is 2-ethylhexyl phosphonic acid mono (2-ethylhexyl) phthalate (P507) and sulfonated kerosene: (3) The acid solution for performing multistage countercurrent stripping of the supported organic phase is a hydrochloric acid solution. |
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