A method for hydrometallurgy of strongly weathered and strongly oxidized glutenite uranium ore

A sandy conglomerate and strong oxidation technology, applied in the field of hydrometallurgy of uranium ore, can solve the problems of difficulty in obtaining economic benefits, different mineral composition and acid content, and low grade of uranium ore, so as to be beneficial to environmental protection and reduce production costs , The effect of reducing the discharge of waste water

Active Publication Date: 2021-08-06
中广核铀业新疆发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the grade of many uranium ores in nature is low, and the ore structure, uranium occurrence state, uranium valence state, mineral composition and acid content are different. It is difficult to obtain economic benefits by conventional hydrometallurgy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Take 40 kg of strongly weathered and strongly oxidized glutenite uranium ore sample, with a uranium grade of 0.234%, use a jaw crusher to crush the glutenite uranium sample to -10 mm, and use the cone quartering method to shrink and grind out 100 g -200 mesh representative ore samples, FeS was measured 2 The content of uranium is 1.10%, the proportion of hexavalent uranium is 98.5%, and the concentration of sulfate ion in the 1:1 washing solution is 1.98 g / L. Then, a standard sieve with a hole diameter of 1 mm was used to sieve the -1 mm glutenite sample from the -1 mm glutenite uranium sample crushed to -10 mm. Take 100 g of the sieved-1 mm glutenite sample, add tap water according to the solid-liquid mass ratio of 1:1, set the speed at 400 rpm, and set the speed at 25 o C, stirred and leached for 12 h, filtered with suction, and collected the filtrate. Then take 50 ml of tap water to wash the filter residue, filter again, and collect the filtrate. After analysis an...

Embodiment 2

[0057] Take 40 kg of strongly weathered and strongly oxidized glutenite uranium ore sample, with a uranium grade of 0.230%, crush the glutenite uranium sample to -10 mm with a jaw crusher, and use the heap cone quartering method to shrink and grind out 100 g -200 mesh representative ore samples, FeS was measured 2 The content of uranium is 1.12%, the proportion of hexavalent uranium is 98.8%, and the concentration of sulfate ion in the 1:1 washing solution is 1.90 g / L. Then, a standard sieve with a hole diameter of 1 mm was used to sieve the -1 mm glutenite sample from the -1 mm glutenite uranium sample crushed to -10 mm. Take 100 g of the sieved-1 mm glutenite sample, add tap water according to the solid-liquid mass ratio of 1:1, set the speed at 400 rpm, and set the speed at 25 o C, stirred and leached for 24 h, filtered with suction, and collected the filtrate. Then take 50 ml of tap water to wash the filter residue, filter again, and collect the filtrate. After analysis...

Embodiment 3

[0059] Take 40 kg of strongly weathered and strongly oxidized glutenite uranium ore sample, with a uranium grade of 0.225%, use a jaw crusher to crush the glutenite uranium ore sample to -10 mm, and use the cone quartering method to shrink and grind out 100 g -200 mesh representative ore samples, FeS was measured 2 The content of uranium is 1.08%, the proportion of hexavalent uranium is 99.0%, and the concentration of sulfate ion in the 1:1 washing solution is 1.91 g / L. Add tap water according to the solid-liquid mass ratio of 1:1, set the rotation speed to 400 rpm, and o C, stirred and leached for 5 h, filtered with suction, and collected the filtrate. The wet filter residue returns to the beaker and continues to add tap water according to the solid-liquid mass ratio of 1:1, and the set speed is 400 rpm. o C, stirring and leaching for 2 h, and this operation cycled 3 times. Finally, take 50 ml of tap water to wash the filter residue, filter again, and collect the filtrate....

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Abstract

The invention relates to a hydrometallurgy method of strongly weathered and strongly oxidized glutenite uranium ore. Only crushing and sieving processes are used to obtain 1 mm glutenite uranium ore samples, and the leaching test without reagents is carried out on the prepared ore samples, and the uranium content analysis is carried out on the filtrate and tailings, and the leaching rate of liquid meter and slag meter is calculated , using 201×7 resin to recover uranium in the leach solution, using NaCl and H 2 SO 4 Carry out leaching to obtain a qualified solution, and then use flake NaOH to precipitate uranium in the qualified solution to obtain the "111" product, and the precipitation mother solution is recycled to prepare the eluent. The method reduces the ore grinding process, realizes closed-circuit recycling of the process solution, and improves the recovery rate of uranium and the purification degree of products. The use of reagent-free leaching avoids the use of chemical reagents such as sulfuric acid, realizes no waste water discharge, saves costs, and protects the environment.

Description

technical field [0001] The invention relates to a method for hydrometallurgy of uranium ore, in particular to a new hydrometallurgy process for strongly weathered and strongly oxidized glutenite uranium ore without grinding process, reagent leaching, and waste water discharge. Background technique [0002] The conventional hydrometallurgy process of uranium ore includes ore breaking, ore grinding, stirring and leaching, solid-liquid separation, enrichment and purification, precipitation and drying and other technological processes. Due to the high energy consumption of ore grinding and the high acid consumption of stirring and leaching, only when the grade of uranium ore is high, the conventional hydrometallurgy process can obtain certain economic benefits. [0003] However, the grade of many uranium ores in nature is low, and the ore structure, uranium occurrence state, uranium valence state, mineral composition and acid content are different. It is difficult to obtain econ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B60/02C22B3/24C22B3/04
CPCC22B60/0221C22B60/0265Y02P10/20
Inventor 丁德馨刘玉龙胡南何平波陈森才李广悦陈祥标杨航
Owner 中广核铀业新疆发展有限公司
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