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

A technology of organic phase and extractant, applied in the field of separation of uranium, molybdenum and ferromolybdenum in leaching solution

Active Publication Date: 2014-07-23
BEIJING RES INST OF CHEM ENG & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metals such as uranium and molybdenum

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] The acid leachate of a vanadium ore contains V2O55.6g / L, Mo200mg / L, U100mg / L. Use 10%

P204+90% sulfonated kerosene is used as the extractant to extract vanadium. After the extractant is cyclically extracted twice, the lean organic phase after stripping the vanadium contains

P204, sulfonated kerosene and a small amount of uranium-molybdenum iron, in which the volume ratio of P204: sulfonated kerosene is 1:9; V is 50mg / L, Mo

It is 350mg / L, U is 180mg / L, Fe is 1g / L.

[0023] As shown in Figure 1, the present invention uses organic phase regeneration to separate uranium molybdenum from the vanadium extractant.

Method, which includes the following steps:

[0024] (1) Using regeneration reagents to regenerate the above-mentioned stripped vanadium-removed lean organic phase, regeneration temperature 25° C., regeneration time

15min, the clarification and phase separation time is 15min; the regeneration reagent is 200g / L ammonium fluoride solution,

The volume r...

Example Embodiment

[0030] Example 2

[0031] The acid leachate of a vanadium ore contains V2O55g / L, Mo110mg / L, U88mg / L. Use 10% (V / V)

P204+90% sulfonated kerosene is used as the extractant to extract vanadium. After the extractant is cyclically extracted 3 times, the lean organic phase after stripping the vanadium contains

P204, sulfonated kerosene and a small amount of uranium-molybdenum iron, in which the volume ratio of P204: sulfonated kerosene is 1:9; V is 20mg / L, Mo

It is 280mg / L, U is 235mg / L, Fe is 0.9g / L.

[0032] As shown in Figure 1, the present invention uses organic phase regeneration to separate uranium molybdenum iron from the vanadium extraction agent

Method, which includes the following steps:

[0033] (1) Using regeneration reagents to regenerate the lean organic phase after removing vanadium by back extraction, regeneration time 10min, clarification

The phase time is 10min; the regeneration reagent is 100g / L ammonium fluoride solution, and the volume ratio of the regeneration re...

Example Embodiment

[0038] Example 3

[0039] The lean organic phase after vanadium stripping (extractant is 20% P204+80% sulfonated kerosene), which contains elements and

The composition is as follows: U1.57g / L, Fe0.729g / L, Mo0.729g / L.

[0040] As shown in Figure 1, the present invention uses organic phase regeneration to separate uranium molybdenum iron from the vanadium extraction agent

Method, which includes the following steps:

[0041] (1) Using regeneration reagents to regenerate the lean organic phase after removing vanadium by back extraction, regeneration time 20min, clarification

The phase time is 20min; the regeneration reagent is 300g / L ammonium fluoride solution, and the volume ratio of the regeneration reagent to the lean organic phase is

1:3. The lean organic phase after regeneration contains U50mg / L, Fe20mg / L, and Mo35mg / L.

[0042] (2) Filtering the regeneration solution obtained after step (1) regeneration to obtain a solution containing uranium, iron precipitate and molybdenum;

S...

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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...

Claims

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Application Information

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IPC IPC(8): C22B3/26C22B3/14C22B34/34C22B60/02
Inventor 李培佑贾秀敏黄永陈天宝刘忠臣刘会武李广
Owner BEIJING RES INST OF CHEM ENG & METALLURGY
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