The Indirect Mineral Carbonation of Electric Arc Furnace Slag Under Microwave Irradiation

被引：36
作者：
Tong, Zhibo [1 ,2 ]
Ma, Guojun [2 ]
Zhou, Dan [1 ]
Yang, Gang [1 ]
Peng, Cheng [1 ]
机构：
[1] Yangtze Normal Univ, Key Lab Extraordinary Bond Engn & Adv Mat Technol, Chongqing 408100, Peoples R China
[2] Wuhan Univ Sci & Technol, Met Secondary Resources Engn Technol Res Ctr, Wuhan 430081, Hubei, Peoples R China
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
基金：
中国国家自然科学基金; 芬兰科学院;
关键词：
COAL FLY-ASH; GAS-SOLID CARBONATION; CO2; SEQUESTRATION; CALCIUM-CARBONATE; SERPENTINITE;
D O I：
10.1038/s41598-019-44162-x
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The indirect mineral carbonation of industrial residues is one of the potential technologies for CO2 sequestration. In this paper, the leaching and carbonation of electric arc furnace (EAF) slag under microwave irradiation was investigated. The experimental results show that the main reactive calcium-containing phase in the EAF slag carbonation process is calcium silicate, and the final leaching ratio of larger particles is lower than that of smaller particles due to the silica layer produced on the surface of the calcium silicate. The Drozdov equation with a self-impeding coefficient can describe EAF slag leaching kinetics under microwave irradiation. The explosive homogeneous nucleation phenomenon under microwave irradiation contributes to the thinning and narrowing of crystals. Microwave irradiation can inhibit the crystaltype transformation of vaterite.
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页数：7
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