A method for separating ferromolybdenum from vanadium extractant by organic phase regeneration

Abstract

The invention provides a method for separating uranium, molybdenum and iron from a vanadium extraction agent by utilizing organic phase regeneration. (2) filter the regeneration solution to obtain uranium-containing, iron-containing precipitates and molybdenum-containing solutions; (3) adopt Na CO to the gained uranium-containing and iron-containing precipitates for leaching of solution, filter to obtain uranium-containing Na CO leaching solution and iron slag, and transfer the leaching solution and iron slag to the uranium-containing and iron-containing precipitates. NaOH was added to the Na2CO3 leaching solution of uranium, and Na2U2O7 was prepared by NaOH alkaline uranium precipitation process; for the obtained molybdenum-containing solution, when the molybdenum concentration was greater than 30g / L~40g / L, it was evaporated to dryness and then calcined; the calcined product was leached with NaOH Take, add sulfuric acid to the obtained molybdenum solution, and pyrolyze molybdic acid to prepare molybdenum trioxide. The method effectively regenerates the organic phase, avoids the reduction of the capacity of the extractant due to the accumulation of uranium, molybdenum and iron in the organic phase, recovers the uranium and molybdenum and obtains qualified products, and comprehensively recycles the resources. .

Description

A method for separating uranium-molybdenum ferromolybdenum from vanadium extractant by using organic phase regeneration Technical field The present invention relates to the separation method of ferrouranium molybdenum in the leaching solution, be specifically related to a kind of mode that adopts organic phase regeneration from A method for separating uranium, molybdenum and ferromolybdenum from a vanadium-poor organic phase. Background technique The abundance of vanadium in the earth's crust is 0.0135%, but the distribution is very scattered, there is no independent deposit, usually with iron, titanium, Uranium, molybdenum, lead, zinc, aluminum symbiosis. The acidic leaching solution of vanadium often contains impurity elements such as iron, uranium, molybdenum, zinc, aluminum, calcium, etc. P204 (di(2-ethyl)hexylphosphoric acid) extracts tetravalent vanadium, back extraction with sulfuric acid, oxidation of qualified vanadium solution, more acidic ammonium salt precip...

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Problems solved by technology

Metals such as uranium and molybdenum are not further separated and recovered

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