Feasibility of using fly ash–slag-based binder for mine backfilling and its associated leaching risks

• Published in: Journal of hazardous materials Vol. 400; p. 123191
• Main Authors: Li, Jia, Zhang, Siqi, Wang, Qi, Ni, Wen, Li, Keqing, Fu, Pingfeng, Hu, Wentao, Li, Zifu
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 05.12.2020
• Subjects: adsorption; C-S-H gels; calcium; cement; encapsulation; Filling parameters; flue gas desulfurization; fly ash; furnaces; gypsum; hazardous waste; Hydrate calcium chloroaluminate; Leaching levels; MSWI fly ash; municipal solid waste; polymerization; risk; slags; slurries; solidification; steel; transportation; waste incineration; SS; pCDDs/pCDFs; Leaching levels; TCDD; HCC; C-S-H gels; FGD gypsum; BFS; MSWI fly ash; TEF; S/S; Hydrate calcium chloroaluminate; Filling parameters

[Display omitted] •MSWI fly ash–SS–BFS–FGD gypsum binders could replace conventional cement.•MSWI fly ash and FGD gypsum promote hydration (SS, BFS), particularly at later stages.•A2′s filling performance and leaching risk are controllable and environmentally acceptable.•A2-2 shows a high degree of...