Thermal Decoating and Composition Controlled of Aerospace Aluminum Alloys Waste for Aircraft Recycling
文献类型：期刊论文
| 作者 | Qian, Guoyu2; Wang, Zhi2; Sun, Zhi2; Liu, Chunwei2; Yan, Pengcheng1 |
| 刊名 | Cailiao Daobao/Materials Reports
 |
| 出版日期 | 2021-01-10 |
| 卷号 | 35期号:1页码:01023-01029 |
| 关键词 | Washing - Aluminum alloys - Thermolysis - Aluminum compounds - Strontium compounds - Aluminum coatings |
| ISSN号 | 1005023X |
| DOI | 10.11896/cldb.20070005 |
| 英文摘要 | The refractory inorganic salt coating and high zinc content in the mixed waste were the main cause of the retired aircraft of green and efficient recycling difficult. The characteristics of the coating containing inorganic salts and the thermal decomposition mechanism were studied by means of thermogrity, roasting and washing. The volatilization and removal of Zinc (Zn) from aluminum alloy melts under vacuum-electromagne-tic field were investigated by means of calculation and the coupling strengthening of vacuum-electromagnetic. A new method for recovering waste aviation aluminum materials by roasting-washing and vacuum-electromagnetic strengthening was proposed. The study of characteristics and decomposition of coating showed that the thermal decomposition of coating with BaCrO4 and SrCrO4 and other inorganic salt underwent the process of macromolecule organic matter-scorch matter-inorganic film. The inorganic film was closely attached to the cracked aluminum alloy surface, which makes it difficult to remove by washing with clean water. The deep removal of inorganic salt coating was realized by 15% dilute nitrate damage to the cracked surface and erosion to the inorganic salt, and the average content of inorganic components such as Cr, Ba and Sr on the surface of aluminum alloy decreased to less than 0.1%. The study of the vacuum-electromagnetic removing Zn showed that beneficial element magnesium (Mg) can be removed simultaneously during Zn removal. The removal of Zn and Mg was enhanced with the increase of temperature (750-900), and the degree of Zn volatilization was greater than Mg. When kept at 900 for 60 min, the content of Zn and Mg decreased to about 0.03% and 0.05% respectively. Further comparative study of 50 Hz and 200 Hz showed that the higher frequency of 200 Hz and higher power (10 kW) were more conducive to the rapid depth removal of Zn, and the removal rate of Zn increased to 0.28%/min within 10 min (0.28%/min at 50 Hz). Taking the mixed waste with the weight ratio of 2024 and 7075 used aviation aluminum as 1: 1 as the object, the new method of roasting-wash, vacuum-electromagnetic strengthening was adopted to prepare the aluminum alloy satisfying the composition requirements of 2024 aluminum alloy. 漏 2021, Materials Review Magazine. All right reserved. |
| 学科主题 | Oxygen |
| 项目编号 | This work was financially supported by Beijing Natural Science Foundation (2192055). |
| 出版者 | Cailiao Daobaoshe/ Materials Review |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60270]  |
| 作者单位 | 1.Boeing (China) Co. Ltd, Beijing; 100027, China 2.Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | Qian, Guoyu,Wang, Zhi,Sun, Zhi,et al. Thermal Decoating and Composition Controlled of Aerospace Aluminum Alloys Waste for Aircraft Recycling[J]. Cailiao Daobao/Materials Reports,2021,35(1):01023-01029. |
| APA | Qian, Guoyu,Wang, Zhi,Sun, Zhi,Liu, Chunwei,&Yan, Pengcheng.(2021).Thermal Decoating and Composition Controlled of Aerospace Aluminum Alloys Waste for Aircraft Recycling.Cailiao Daobao/Materials Reports,35(1),01023-01029. |
| MLA | Qian, Guoyu,et al."Thermal Decoating and Composition Controlled of Aerospace Aluminum Alloys Waste for Aircraft Recycling".Cailiao Daobao/Materials Reports 35.1(2021):01023-01029. |
入库方式： OAI收割
来源：过程工程研究所
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