Full
Outline
A uranium deposit in Xinjiang adopts the "CO2 + O2" neutral leaching process.When treating the leachate with a fixed bed, the resin's adsorption capacity is reduced with the increase in operating time, and there are problems such as long leaching and transformation operation cycles, and poor process connection. To solve this problem, the research has been conducted on the integrated process of resin saturation readsorption, hydrochloric acid transformation regeneration and water elution. The analysis reveals that resin pollutants mainly contain elements such as Ca, Fe, Al, etc., and industrial hydrochloric acid can effectively detoxify them. This integrated process utilizes low concentration acidic qualified solution to disturb ion exchange equilibrium, promoting the conversion of to
and achieving saturation readsorption; the resin is transformed into chlorouranyl type and activated with hydrochloric acid transformation; during water washing, asρ(Cl-) decreases,
gradually dissociates into
. The results show that this process increases the resin capacity by more than twice, improves the leaching efficiency by 37 %, shortens the operating time by 58.3 %, and reduces the cost of hydrometallurgy by 61 700 yuan per ton of uranium, achieving the synergistic operation of resin detoxification, regeneration transformation, and uranium leaching. The integrated process provides an efficient solution for the "CO2 + O2" neutral leaching and uranium hydrometallurgy.
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| 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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