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Removal and Mechanism of Aluminum Nitride from Secondary Aluminum Ash by Hydrolysis
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Xiaoyan LIN1, 2, 3, Dongxing WANG2, 3, Zhiyuan MA2, 3, Shuai RAO2, 3, Wuming XIE1, Hailing JIANG1, Hongyang CAO2, 3
Hydrometallurgy of China | 2024, 43(3) : 314 - 321
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Hydrometallurgy of China | 2024, 43(3): 314-321
• Experiment Research •
Removal and Mechanism of Aluminum Nitride from Secondary Aluminum Ash by Hydrolysis
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Xiaoyan LIN1, 2, 3, Dongxing WANG2, 3, Zhiyuan MA2, 3, Shuai RAO2, 3, Wuming XIE1, Hailing JIANG1, Hongyang CAO2, 3
Affiliations
  • 1 School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 2 Guangdong Academy of Sciences, Institute of Resources Utilization and Rare Earth Development, Guangzhou 510650, China
  • 3 State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals, Guangzhou 510650, China
Published: 2024-06-20 doi: 10.13355/j.cnki.sfyj.2024.03.014
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The removal of aluminum nitride is one of the keys processes of the harmless treatment of secondary aluminum ash. The removal of aluminum nitride from secondary aluminum ash in calcium oxide-glucose hydrolysis system was studied. The effects of calcium oxide addition amount, glucose addition amount, hydrolysis temperature, hydrolysis time and liquid volume to solid mass ratio on the removal rate of aluminum nitride were examined. The mechanism of aluminum nitride hydrolysis removal promoted by additives was investigated. The results show that under the optimum hydrolysis conditions of hydrolysis temperature of 90 ℃, hydrolysis time of 2 h, liquid volume to solid mass ratio of 10 mL/1 g, calcium oxide addition amount of 10%, glucose addition amount of 0.75%, the removal rate of aluminum nitride reaches 95.42%. Through analysis and characterization, it is determined that in the calcium oxide-glucose hydrolysis system, glucose acts as a retarder, which can inhibit the formation of calcium aluminate coating layer on the surface of aluminum nitride particles, make the hydrolysis of aluminum nitride thoroughly, and improve its removal rate.

secondary aluminum ash  /  aluminum nitride  /  hydrolysis  /  calcium oxide  /  glucose  /  removal
Xiaoyan LIN, Dongxing WANG, Zhiyuan MA, Shuai RAO, Wuming XIE, Hailing JIANG, Hongyang CAO. Removal and Mechanism of Aluminum Nitride from Secondary Aluminum Ash by Hydrolysis[J]. Hydrometallurgy of China, 2024 , 43 (3) : 314 -321 . DOI: 10.13355/j.cnki.sfyj.2024.03.014
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Article Info
doi: 10.13355/j.cnki.sfyj.2024.03.014
  • Receive Date：2024-03-06
  • Online Date：2025-09-10
  • Published：2024-06-20
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  • Received：2024-03-06
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Affiliations
    1 School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
    2 Guangdong Academy of Sciences, Institute of Resources Utilization and Rare Earth Development, Guangzhou 510650, China
    3 State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals, Guangzhou 510650, China
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https://castjournals.cast.org.cn/joweb/sfyj/EN/10.13355/j.cnki.sfyj.2024.03.014
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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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