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A kind of synergistic extractant and method for separating zirconium and hafnium

An extraction agent, zirconium and hafnium technology, applied in the field of chemical substances, can solve the problems of high cost, large amount, difficult control of operation process, etc., and achieve the effects of cost reduction, high separation efficiency and high hafnium zirconium separation coefficient

Active Publication Date: 2022-05-31
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the above-mentioned extractants are used in a large amount in the separation process of zirconium and hafnium, and the cost is high, and the operation process is not easy to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] The present embodiment provides a synergistic extractant for preferentially extracting hafnium and a method for extracting and separating zirconium and hafnium.

Embodiment 2

[0140] The extraction agent and the zirconium-hafnium aqueous phase feed liquid were prepared in the same manner as in Example 1.

Embodiment 3

[0144] The extraction agent and the zirconium-hafnium aqueous phase feed solution were prepared in the same manner as in Example 1.

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PUM

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Abstract

The invention discloses a synergistic extractant and a method for separating zirconium and hafnium, belonging to the technical field of separation of chemical substances. The synergistic extractant includes an alkaline amine extractant, a neutral phosphorus extractant and a diluent, which can effectively extract zirconium and hafnium under the condition that the basic amine extractant and the neutral phosphorus extractant are used less. separate. Separating the zirconium and hafnium mixture to be separated by using the separation reagent including the above-mentioned synergistic extractant can obtain a higher hafnium extraction rate and hafnium-zirconium separation coefficient, and the separation efficiency is high.

Description

A kind of synergistic extractant and method for separating zirconium and hafnium technical field The present invention relates to the technical field of chemical substances, in particular, to a kind of synergistic extractant for separating zirconium and hafnium and methods. Background technique [0002] The symbiosis of zirconium and hafnium in nature. In industrial raw materials containing zirconium and hafnium, the mass ratio of zirconium / hafnium is about 100 / 3, that is, zirconium is more than hafnium. few. At present, the extraction and separation system of zirconium and hafnium includes TBP‑HNO 3 System, P204, P507, Cyanex272, Cyanex572, etc. Organophosphonic acid extractant, thiophosphoric acid extractant such as Cyanex301 or Cyanex302, etc. But at present above-mentioned extraction agent consumption is large in zirconium hafnium separation process, cost is high, and operation process is not easy to control. [0004] In view of this, the present invention is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/40C22B34/14
CPCC22B34/14Y02P10/20
Inventor 吴明徐志高徐斐董攀飞何正艳瞿军李巧蕾
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES