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Application of Refinement in “111” Product Quality Improvement
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LIU Tianyin, LI Xilong, CAO Junpeng, ZHANG Bo, LIU Xiaokui, FENG Xiaogang
Uranium Mining and Metallurgy | 2024, 43(2) : 96 - 102
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Uranium Mining and Metallurgy | 2024, 43(2): 96-102
• SAFETY AND ENVIRONMENT PROTECTION •
Application of Refinement in “111” Product Quality Improvement
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LIU Tianyin, LI Xilong, CAO Junpeng, ZHANG Bo, LIU Xiaokui, FENG Xiaogang
Affiliations
  • Tongliao Uranium Co., Ltd., CNNC, Tongliao 028000, China
Published: 2024-05-20 doi: 10.13426/j.cnki.yky.2023.10.09
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The fine management model was introduced in a “CO2 + O2” in-situ leaching uranium mine in Inner Mongolia, and the processes of adsorption, leaching, acidification and precipitation which affect the quality of production were carefully managed. The preparation of eluent was optimized from “settling mother liquor + sodium bicarbonate + hydrochloric acid + sodium chloride” to“settling mother liquor + sodium bicarbonite + water”, the pH of eluent was maintained at 9.5 ~ 10.0, and reducing the accumulation of chloride ion in the system. The peak mass concentration of uranium in the eluate was increased and maintained at 80~130 g/L. The amount of hydrochloric acid added in the acidification process is automatically controlled, the pH is accurately controlled in 4.5~4.6, and the ratio of carbon to uranium in the qualified liquid is further reduced. Adjust the flow rate of leachate to keep the average mass concentration of uranium in 30~70 g/L, to reduce the influence of mass concentration of uranium on product quality. Control slurry precipitation time, to improve slurry pressure filtration effect. After the optimization of production parameters, the moisture content of the product decreased by 8.50%, the uranium content increased by 2.88%, and the product quality was improved as a whole.

refinement  /  “111” products  /  sodium diuranate  /  pressure filtration  /  elution  /  product quality  /  uranium content  /  moisture
LIU Tianyin, LI Xilong, CAO Junpeng, ZHANG Bo, LIU Xiaokui, FENG Xiaogang. Application of Refinement in “111” Product Quality Improvement[J]. Uranium Mining and Metallurgy, 2024 , 43 (2) : 96 -102 . DOI: 10.13426/j.cnki.yky.2023.10.09
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Year 2024 volume 43 Issue 2
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doi: 10.13426/j.cnki.yky.2023.10.09
  • Receive Date：2023-10-25
  • Online Date：2025-07-04
  • Published：2024-05-20
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  • Received：2023-10-25
Affiliations
    Tongliao Uranium Co., Ltd., CNNC, Tongliao 028000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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