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Method for comprehensively recovering uranium and rhenium from leaching solution with ion exchange resin

A technology of ion exchange resin and leaching solution, which is applied in the field of uranium-rhenium resources development in hydrometallurgy, can solve the problems of low rhenium concentration, difficulty in separation and recovery, and high mass concentration ratio, and achieve low cost, simple process, and high-efficiency recovery. Effect

Active Publication Date: 2018-02-13
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for comprehensively recovering uranium and rhenium in the leachate with ion exchange resins, so as to solve the problems of high concentration ratio of uranium and rhenium in the leachate of rhenium-containing uranium ore, low concentration of rhenium, and difficult separation and recovery.

Method used

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  • Method for comprehensively recovering uranium and rhenium from leaching solution with ion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The composition of the leachate is shown in Table 1.

[0082] Table 1 Test results of acidic uranium and rhenium leachate components 1

[0083] Element

U

Re

ΣFe

Fe 3+

SO 4 2-

residual acid

ρ B / (g·L -1 )

0.172

0.003

2.54

0.87

15.3

8.7

[0084] 1) Simultaneous adsorption of uranium and rhenium. The resin is ZGA352 resin, the inner diameter of the resin column is 6 mm, and the height of the resin bed is 750 mm. The adsorption contact time is 5 minutes, and the penetration point of uranium is controlled to be 2.0mg / L. It penetrates when adsorbed at 150BV, and reaches saturation when adsorbed at 300BV. The saturated capacity of uranium is 33mg / mL (wet resin), and the adsorption rate of uranium is 99%. Liquid rhenium concentration < 0.1mg / L, rhenium adsorption rate above 97%, loading resin rhenium capacity 0.9mg / mL (wet resin).

[0085] 2) Desorption of uranium. The desorption agent is 5g / L sulfuric ...

Embodiment 2

[0089] The composition of the leachate is shown in Table 2.

[0090] Table 2 Test results of acidic uranium and rhenium leachate components 2

[0091] Element

U

Re

ΣFe

Fe 3+

SO 4 2-

residual acid

ρ B / (g·L -1 )

0.332

0.007

6.31

1.42

30.2

17.6

[0092] 1) Simultaneous adsorption of uranium and rhenium. The resin is D380 resin, the inner diameter of the resin column is 6mm, and the height of the resin bed is 750mm. The adsorption contact time is 5min, and the penetration point of uranium is controlled to be 5.0mg / L. It penetrates when adsorbing 100BV, and reaches saturation when adsorbing 200BV. The saturated capacity of uranium is 43mg / mL (wet resin), and the uranium adsorption rate is 99%. Liquid rhenium concentration < 0.1mg / L, rhenium adsorption rate 98%, loading resin rhenium capacity 1.3mg / mL (wet resin).

[0093] 2) Desorption of uranium. The desorption agent is 5g / L sulfuric acid + 50g / L sodium c...

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Abstract

The invention relates to a method for comprehensively recovering uranium and rhenium from a leaching solution with ion exchange resin. Aiming to the problems of large mass concentration ratio of the uranium and the rhenium in a rhenium ore and uranium ore containing leaching solution and difficulty in separation recovery, strongly basic anion-exchange resin with stronger adsorption ability is preferred to adsorb the uranium and the rhenium in the leaching solution firstly at the same time; and then aiming to uranium and rhenium loading resin, by utilizing the characteristic that the resin is stronger in the binding capacity to the rhenium than to the uranium and adopting desorption agents with different desorption capacities to sequentially realize respective desorption and separation of the uranium and the rhenium, comprehensive recovery of the uranium and the rhenium in the leaching solution is finally realized. By adopting the method, 98 percent or above of the uranium and 95 percent or above of the rhenium in the rhenium ore and uranium ore containing leaching solution can be recovered; in an obtained uranium qualified liquid, rho (U) reaches 10g / L or above, and rho (Re) is smaller than 1.0mg / L, and in an obtained rhenium qualified liquid, rho (Re) reaches 0.5g / L, and rho (U) is smaller than 5mg / L. The method is good in separation effect of the uranium and the rhenium, highin recovery rate of the uranium and the rhenium and simple in technological process and is an effective way of comprehensively recovering the uranium and the rhenium from the leaching solution.

Description

technical field [0001] The invention belongs to the technical field of uranium-rhenium resource development in hydrometallurgy, and in particular relates to a method for comprehensively recovering uranium-rhenium in leachate by ion exchange resin. Background technique [0002] Rhenium has been widely used due to its high melting point, high strength and good plasticity, no brittle critical transition temperature and good creep resistance under high temperature and rapid cooling and rapid heating conditions, and has become a modern It is an extremely important new material in the high-tech field and an important military strategic material. However, the reserves of rhenium on the earth are very small, and the proven reserves in the world are about 2500t. The main consuming countries are developed countries such as the United States, Western Europe, Japan, and Russia, a military power. In recent years, the world's total annual consumption has reached 40t, and with the With th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B60/02C22B61/00C22B3/24
Inventor 李大炳康绍辉樊兴宋艳杨志平刘康
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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