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A method for deep phosphorus removal in acidic vanadium extraction solution

A solution and acid technology, applied in the field of deep phosphorus removal in acid vanadium extraction solution, can solve problems such as the adverse effects of polyacid radicals, and achieve the effects of reduced loss of vanadium, poor stability and cost reduction.

Active Publication Date: 2021-06-18
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned problems existing in the prior art, the present invention aims to overcome the difficult problems in the existing phosphorus removal process. The technical problem to be solved is the adverse effect of polyacid radicals on phosphorus removal in the acidic system, and provides an acidic vanadium extraction solution. Deep phosphorus removal method

Method used

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  • A method for deep phosphorus removal in acidic vanadium extraction solution
  • A method for deep phosphorus removal in acidic vanadium extraction solution
  • A method for deep phosphorus removal in acidic vanadium extraction solution

Examples

Experimental program
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Effect test

Embodiment 1

[0039] In this example, the experimental raw material, that is, an acid vanadium solution is vanadium residue, passed by calcification, acidic leaching, or vanadium-containing 21 g / L, phosphorus containing 1.4 g / L, and a solution pH of 2.6. Have high recovery value.

[0040] Methods of depth in an acidic vanadium solution, including the following steps:

[0041] S1: Add a solver to a solution, the practice agent is methylamine, the addition is 6 mg / L, stir well;

[0042] S2: The solution after adding the solution of S1 is heated to 48 ° C, and the phosphorus is added to the solution, and the phosphorus is aluminum sulfate, the addition amount is 0.8 times the phosphorus concentration, and the reaction time is 60 min.

[0043] After the reaction, the phosphorus rate was measured by 99.3%, the vanadium loss rate of 0.8%, the vanadium ratio of approximately 2125 was completely meta.

Embodiment 2

[0045] The experimental feedstock in this embodiment is vanadium residue via calcified calcined-acid leaching, vanadium-containing 15g / L, phosphorus containing 0.8 g / L, and the solution pH is 3.2. Have high recovery value.

[0046] Methods of depth in an acidic vanadium solution, including the following steps:

[0047] S1: Adding a solution to the solution, the polymerization agent is a complex of ethylamine and ethylenediamine, the mass ratio of ethylamine and ethylenediamine is 1: 1, and the addition is 5 mg / L, stirred well;

[0048] S2: The solution after adding the solution after S1 is heated to 50 ° C, and the phosphorus is added to the solution, the phosphorus is a ferrite salt, and the addition amount is 1.0 times the phosphorus concentration, and the reaction time is 80 min.

[0049] After the reaction, the phosphorus rate was measured by 99.1%, the vanadium loss rate of 0.5%, the vanadium ratio of 2072 was complete, and the subsequent semi-vanadium steps were met to t...

Embodiment 6

[0053] Example 6 A complex of formation of metallic metallicine and ethylamine in Example 6 was 1: 1.

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Abstract

The invention relates to a method for deeply removing phosphorus in an acidic vanadium extraction solution, which comprises the following steps: S1: adding a depolymerization agent to the acidic vanadium extraction solution, and mixing evenly for the subsequent phosphorus removal process; S2: adding a depolymerization agent to S1 Phosphorus removal agent is added to the solution obtained in the process, mixed evenly, and the phosphorus removal process is carried out. The method of the present invention has the advantages of simplicity, high efficiency, and cleanliness. Compared with the phosphorus removal process without adding a depolymerization agent, the phosphorus removal rate is high, the loss of vanadium is small, and the separation degree of phosphorus and vanadium is high, and the deep phosphorus removal of the acidic vanadium extraction solution can be realized. , reduce the loss of vanadium in the process of phosphorus removal, and improve resource utilization.

Description

Technical field [0001] The present invention relates to the field of colored metal wet smelting techniques, and more particularly to a method of depth in an acidic vanadium solution. Background technique [0002] Vanadium is an important high melting point rare metal element, widely used in industries such as steel, chemical, aerospace, etc., is known as "modern industrial taste", is one of the indispensable raw materials for development modern industries. With the consumption and industrial development of resources, vanadium metallurgical industries face the double pressure of raw materials complex and product quality, and the requirements for vanadium recovery rates and product purity are increasing. [0003] Impurity elements will seriously affect the vanadium and vanadium product purity of vanadium-containing solution, especially phosphorus elements, which will enter the chilly vanadium product during the sampling of vanadium, which affects the purity of the product, and form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B34/22
CPCC22B7/006C22B34/22Y02P10/20
Inventor 辛云涛李刚吕学伟白晨光向俊一
Owner CHONGQING UNIV
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