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Method for separating uranium from uranium ore pulp with electrodialysis method

A technology of electrodialysis and uranium ore, which is applied in the field of separation, purification and enrichment of uranium, can solve problems such as complex process, and achieve the effect of simple process, small footprint and elimination of pollution

Active Publication Date: 2019-04-12
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing process is more complex

Method used

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  • Method for separating uranium from uranium ore pulp with electrodialysis method
  • Method for separating uranium from uranium ore pulp with electrodialysis method
  • Method for separating uranium from uranium ore pulp with electrodialysis method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Add the uranium ore sample with a particle size of about 200 mesh A and the leaching agent into the leaching tank, the mass ratio of the ore sample and the leaching agent is 1:1, the leaching agent is 50% sulfuric acid solution, the leaching temperature is 40°C, and the stirring and leaching time is 0.5 h, to obtain uranium-containing pulp, the uranium concentration in the uranium-containing pulp is 0.690g / L, and the sulfuric acid is 26.0g / L. Filter out the sawdust and other sundries in the leached uranium-containing pulp with a stainless steel sieve, and then put it into the upper funnel and enter the electrodialyzer. When the U concentration in the leached pulp is greater than 5mg / L, the leached pulp continues to circulate in the pulp electrodialyzer. When the concentration of U in the leached pulp drops below 5mg / L, the tailings are neutralized and discarded. Tap water was used as the initial concentrated water. After each cycle of the concentrated water, the U sol...

Embodiment 2

[0041] Add the B uranium ore sample with a particle size of about 200 mesh and the leaching agent into the leaching tank, the mass ratio of the ore sample and the leaching agent is 1:1, the leaching agent is 50% sulfuric acid solution, the leaching temperature is 40°C, and the stirring and leaching time is 0.5 h, Obtain uranium-containing pulp, the uranium concentration in the uranium-containing pulp is 0.458g / L, and the sulfuric acid is 29.0g / L. Filter out the sawdust and other debris in the leached pulp with a stainless steel sieve, and then put it into the upper funnel and enter the electrodialyzer. When the U concentration in the leached pulp is greater than 5mg / L, the leached pulp continues to circulate in the pulp electrodialyzer. When the concentration of U in the leached pulp drops below 5mg / L, the tailings are neutralized and discarded. Tap water was used as the initial concentrated water. After each cycle of the concentrated water, the U solution in the concentrate...

Embodiment 3

[0045] Add the C uranium ore sample with a particle size of about 200 mesh and the leaching agent into the leaching tank, the mass ratio of the ore sample and the leaching agent is 1:1, the leaching agent is 50% sulfuric acid solution, the leaching temperature is 40°C, and the stirring and leaching time is 0.5 h, to obtain uranium-containing pulp, the uranium concentration in the uranium-containing pulp is 0.445g / L, and the sulfuric acid is 26.2g / L. Filter out the sawdust and other debris in the leached pulp with a stainless steel sieve, and then put it into the upper funnel and enter the electrodialyzer. When the U concentration in the leached pulp is greater than 5mg / L, the leached pulp continues to circulate in the pulp electrodialyzer. When the concentration of U in the leached pulp drops below 5mg / L, the tailings are neutralized and discarded. Tap water was used as the initial concentrated water. After each cycle of the concentrated water, the U solution in the concentr...

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Abstract

The invention provides a method for separating uranium from uranium ore pulp with an electrodialysis method. The method includes the following steps that a uranium-containing ore sample is subjected to agitation leaching with a leaching agent, and the uranium-containing ore pulp is obtained; and uranium is separated from the uranium-containing ore pulp with the electrodialysis method, and a uranium-rich solution and tailings are obtained. According to the method, a thickener or a spiral classifier or a hydrocyclone or other equipment is not needed, enriched uranium can be separated only with the electrodialysis method, and the process is simple; the method has a high uranium separation rate; by means of the method, no reagent needs to be added, and environmental pollution is fundamentallyeliminated; and by means of the method, the occupied area is small. The experimental result shows that the uranium separation rate of the method is 93.0-96.0%.

Description

technical field [0001] The invention belongs to the technical field of separating and purifying enriched uranium, and in particular relates to a method for separating uranium in uranium pulp by electrodialysis. Background technique [0002] In the stirring leaching process, the general liquid-solid separation slurry mainly uses a thickener, and the obtained clear liquid can be ion-exchanged or directly extracted and stripped to achieve the purpose of enriching and purifying uranium. Another process is that after leaching, the ore pulp passes through a spiral classifier and a hydrocyclone, and then enters the ion exchange, extraction, and stripping processes to achieve the purpose of enriching and purifying metals. The existing technology is relatively complicated. Contents of the invention [0003] In view of this, the object of the present invention is to provide a method for separating uranium in uranium ore slurry by electrodialysis, which is simple and has a high sepa...

Claims

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Application Information

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IPC IPC(8): C22B60/02C22B3/08C22B3/20
CPCC22B60/0234C22B60/0252
Inventor 胡凯光何智李昊许北俊刘增刚
Owner NANHUA UNIV
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