Full
Outline
Xinjiang hydrothermal uranium-beryllium deposit is a critical polymetallic resource in China, yet the occurrence characteristics of uranium and its migration behavior during beneficiation and metallurgy remain unclear. The occurrence state of uranium and its migration patterns during flotation-leaching processes were systematically investigated through multi-scale mineralogical characterization techniques (polarizing microscope, SEM, AMICS, EPMA). The results indicate that uranium primarily occurs in uranophane (76%), pitchblende (16%), and kasolite (6%). Uranium minerals exhibit fine dissemination sizes (10~70 μm) and low liberation degrees (<5%). The samples needs to be further finely ground to increase the dissociation degree of uranium minerals, so that they can fully contact the flotation reagents, thereyby ensuring the beneficiation effect. Among these factors, uranophane is a primary constraint on uranium leaching due to its fine-grained encapsulation and potential formation of surface silica gel coatings during leaching. While grinding the raw ore to -45 μm significantly improves mineral liberation, insufficient selectivity of flotation reagents results in non-significant distribution patterns between beryllium concentrate and tailings. Sulfuric acid roasting effectively decomposes silicate frameworks, achieving a uranium leaching rate exceeding 99%. The study can provide theoretical insights for optimizing the co-extraction of uranium and beryllium from complex polymetallic ores.
112
25
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
