Method for removing impurity tungsten from cobalt solution

An impurity, iron and cobalt technology, applied in the field of material regeneration and recycling, can solve problems such as inapplicability of tungsten removal treatment

Active Publication Date: 2013-01-23
GUANGDONG JIANA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, the conventional method of ion exchange adsorption of tungsten is not suitable for the removal of tungsten in the cobalt smelting system.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A method for removing impurity tungsten in cobalt liquid, the steps are: A, carrying out iron removal treatment on cobalt liquid to obtain iron removal liquid, and the cobalt liquid composition is WO 3 3+ <0.1g / L, the pH of the cobalt liquid is <3.0; B, the iron removal liquid obtained in step A is put into the ion exchange column, and the composition of the liquid after iron removal (sulfuric acid system): Co: 31.54g / L, W: 0.6 g / L, Fe: 0.003g / L, pH: 2-2.5. Use tungsten exchange adsorption resin to remove tungsten to obtain cobalt exchange liquid. The tungsten exchange adsorption resin is D314 large-pore weakly basic anion exchange resin, and the cobalt exchange liquid components are Co: 32.76g / L, W: 0.004 g / L, Fe: 0.0025g / L, pH: 3.5-4. C, adding a resolving agent to the tungsten exchange adsorption resin obtained in step B to obtain tungsten liquid and the resin after analysis; D, adding a transformation agent to the resolved resin in step C to obtain a transformed re...

Embodiment 2

[0013] A method for removing impurity tungsten in cobalt liquid, the steps are: A, carrying out iron removal treatment on cobalt liquid to obtain iron removal liquid, and the cobalt liquid composition is WO 3 3+ <0.1g / L, the pH of the cobalt solution is <3.0; B. The iron removal solution obtained in step A is put into an ion exchange column, and the composition of the solution after iron removal (sulfuric acid system): Co: 31.04g / L, W: 0.48 g / L, Fe: 0.016g / L, pH: 2-2.5. The cobalt exchange solution is obtained by using tungsten exchange adsorption resin to remove tungsten, and the tungsten exchange adsorption resin is D354 large-pore weakly basic anion exchange resin. The components of the cobalt exchange solution are Co: 30.41g / L, W: 0.002g / L, Fe: 0.003g / L, and PH: 3.5. C, adding a resolving agent to the tungsten exchange adsorption resin obtained in step B to obtain tungsten liquid and the resin after analysis; D, adding a transformation agent to the resolved resin in step ...

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PUM

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Abstract

The invention discloses a method for removing an impurity tungsten from cobalt solution. The method comprises the following steps of: A, performing deferrization on the cobalt solution to obtain iron-removed solution, wherein the WO3 content and the Fe<3+> content of the cobalt solution are less than 13 g / L and less than 0.1 g / L respectively; and the pH value of the cobalt solution is less than 3.0; B, placing ion exchange columns in the iron-removed solution obtained from the step A and removing tungsten to obtain the exchange solution of cobalt by using a tungsten exchange adsorbent resin; C, adding an analyzing agent on the tungsten exchange adsorbent resin with adsorbed tungsten obtained from the step B to obtain tungsten solution and the analyzed resin; and D, adding a transforming agent into the analyzed resin obtained from the step C to obtain the transformed resin which can serve as the tungsten exchange adsorbent resin to be recycled in the step B. The method has the advantages of effectively removing the impurity tungsten from a cobalt smelting system and saving cost by utilizing the functional group transformation of ion exchange resin.

Description

technical field [0001] The invention relates to the field of material recycling, in particular to a method for removing impurity tungsten in acidic cobalt liquid. Background technique [0002] At present, the methods for extracting tungsten by ion exchange are all carried out in a neutral or slightly alkaline system, and the resin used is a microporous strong basic resin (such as 201×7 type). In neutral and alkaline environments, tungsten is represented by WO 4 2- form exists in solution. By choosing an appropriate anion exchange resin, tungsten can be converted to WO 4 2- The form of the resin is adsorbed on the resin, and the functional groups on the resin are exchanged and enter the solution. Other metal ions in the solution remain in the solution to achieve the purpose of separation from tungsten. But this method is not suitable for the removal of tungsten in cobalt smelting. The reason is that the above techniques are carried out in a neutral or alkaline environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/42C22B23/00C22B34/36
CPCY02P10/20
Inventor 钟晖
Owner GUANGDONG JIANA ENERGY TECH CO LTD
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