{"title":"碱焙烧-水浸强化二次铝渣中金属铝的回收","authors":"Chen LI, Wei LIU, Fen JIAO, Liang-min DONG, Shi-yang LIU, Wen-qing QIN","doi":"10.1016/S1003-6326(24)66658-6","DOIUrl":null,"url":null,"abstract":"<div><div>An innovative process was proposed to recover metallic aluminum from secondary aluminum dross (SAD) by alkali roasting−water leaching. Thermodynamic calculations and experimental results were used to illustrate the phase transformation and reaction mechanism of the alkali roasting process. The leaching behaviors of roasted residue were also analyzed. Under optimal conditions, the aluminum extraction rate reached 93.08%. In addition, the kinetics of the water leaching of roasted products was studied through shrinking core model, and it was revealed that the leaching process of aluminum was in accord with diffusion control. The apparent activation energy of the leaching process was calculated to be 3.44 kJ/mol. Based on the above study, the underlying mechanism of the alkali roasting−water leaching was clarified.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 4063-4074"},"PeriodicalIF":4.7000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Intensifying recovery of metallic aluminum in secondary aluminum dross by alkali roasting−water leaching\",\"authors\":\"Chen LI, Wei LIU, Fen JIAO, Liang-min DONG, Shi-yang LIU, Wen-qing QIN\",\"doi\":\"10.1016/S1003-6326(24)66658-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>An innovative process was proposed to recover metallic aluminum from secondary aluminum dross (SAD) by alkali roasting−water leaching. Thermodynamic calculations and experimental results were used to illustrate the phase transformation and reaction mechanism of the alkali roasting process. The leaching behaviors of roasted residue were also analyzed. Under optimal conditions, the aluminum extraction rate reached 93.08%. In addition, the kinetics of the water leaching of roasted products was studied through shrinking core model, and it was revealed that the leaching process of aluminum was in accord with diffusion control. The apparent activation energy of the leaching process was calculated to be 3.44 kJ/mol. Based on the above study, the underlying mechanism of the alkali roasting−water leaching was clarified.</div></div>\",\"PeriodicalId\":23191,\"journal\":{\"name\":\"Transactions of Nonferrous Metals Society of China\",\"volume\":\"34 12\",\"pages\":\"Pages 4063-4074\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions of Nonferrous Metals Society of China\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1003632624666586\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/13 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of Nonferrous Metals Society of China","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1003632624666586","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/13 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Intensifying recovery of metallic aluminum in secondary aluminum dross by alkali roasting−water leaching
An innovative process was proposed to recover metallic aluminum from secondary aluminum dross (SAD) by alkali roasting−water leaching. Thermodynamic calculations and experimental results were used to illustrate the phase transformation and reaction mechanism of the alkali roasting process. The leaching behaviors of roasted residue were also analyzed. Under optimal conditions, the aluminum extraction rate reached 93.08%. In addition, the kinetics of the water leaching of roasted products was studied through shrinking core model, and it was revealed that the leaching process of aluminum was in accord with diffusion control. The apparent activation energy of the leaching process was calculated to be 3.44 kJ/mol. Based on the above study, the underlying mechanism of the alkali roasting−water leaching was clarified.
期刊介绍：
The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.
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