Kinetics of aluminum extraction from roasting activated fly ash by sulfuric acid leaching

被引：3
|
作者：
Liu, Chen-Jia [1 ]
Zhao, Ai-Chun [1 ]
Ye, Xin [1 ]
Zhao, Zi [1 ]
Yang, Xiao-Rong [1 ]
Qin, Yan-Mei [1 ]
Zhang, Ting-An [2 ]
机构：
[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030024, Peoples R China
[2] Northeastern Univ, Key Lab Ecol Utilizat Multimet Intergrown Ores, Minist Educ, Shenyang 110004, Peoples R China
来源：
MRS COMMUNICATIONS | 2024年 / 14卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Al; Chemical reaction; Chemical synthesis; Kinetics; Environmentally protective; BOTTOM ASH; COAL; RADIOACTIVITY; RECOVERY; REMOVAL; METALS;
D O I：
10.1557/s43579-023-00494-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The process of extracting aluminum with sulfuric acid from high-alumina fly ash activated by roasting with Na2CO3 and NaOH as raw materials ware studied. The results revealed that the aluminum in fly ash activated by sodium carbonate reached 93.2% under the optimum conditions (30% H2SO4, 90 degrees C, 120 min, and liquid-to-solid ratio was 5:1). Simultaneously, the leaching rate of aluminum in fly ash activated by sodium hydroxide reached 92%. The study of kinetics suggested that the leaching process with sulfuric acid was controlled through chemical reactions; it conformed to the kinetic equation: 1 - (1 - X) 1/3 = 22.924 exp[- 25174/(RT)]t.Graphical abstractExtracting aluminum with sulfuric acid from high-alumina fly ash activated by roasting with Na2CO3 and NaOH as raw materials.
引用
收藏
页码：48 / 55
页数：8
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