Pyrite transformation and sulfur dioxide release during calcination of   coal gangue

doi:10.1039/c4ra06954d

CORC > 北京大学 > 工学院

	Pyrite transformation and sulfur dioxide release during calcination of coal gangue
	Zhang, Yingyi ; Ge, Xinlei ; Nakano, Jinichiro ; Liu, Lili ; Wang, Xidong ; Zhang, Zuotai
刊名	rsc advances
	2014
关键词	THERMAL-DECOMPOSITION BEHAVIOR OXIDATION COMBUSTION WASTES MECHANISM KINETICS CHINA
DOI	10.1039/c4ra06954d
英文摘要	Calcination is a typical process associated with the utilization of coal gangue. A concern associated with this procedure is the emission of sulfur dioxide (SO2). In this work, the behavior of SO2 release during coal gangue calcination under an air atmosphere were systematically investigated and compared to the characteristics of SO2 evolution from pure pyrite calcination. Results show that although sulfur in coal gangue mainly exists in the form of pyrite, it represents different transformation behaviors from that in pure mineral pyrite. At 500 degrees C, the release rate of SO2 is significantly higher in coal gangue than in mineral pyrite due to the fact that coal gangue combustion can occur at low temperatures, which favors the SO2 release, while at 600 and 700 degrees C they become almost the same. The shrinking core model cannot describe the SO2 emission profiles in coal gangue and, instead, a hybrid 3D diffusion, i.e. the Jander model, is successfully developed in this study.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000342199000037&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; SCI(E); EI; 3; ARTICLE; zuotaizhang@pku.edu.cn; 80; 42506-42513; 4
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154362]
专题	工学院
推荐引用方式 GB/T 7714	Zhang, Yingyi,Ge, Xinlei,Nakano, Jinichiro,et al. Pyrite transformation and sulfur dioxide release during calcination of coal gangue[J]. rsc advances,2014.
APA	Zhang, Yingyi,Ge, Xinlei,Nakano, Jinichiro,Liu, Lili,Wang, Xidong,&Zhang, Zuotai.(2014).Pyrite transformation and sulfur dioxide release during calcination of coal gangue.rsc advances.
MLA	Zhang, Yingyi,et al."Pyrite transformation and sulfur dioxide release during calcination of coal gangue".rsc advances (2014).