A comparative study on the mineralogy, chemical speciation, and combustion behavior of toxic elements of coal beneficiation products
Fu, B(Fu, Biao)1,2; Liu, GJ(Liu, Guijian)1,2; Sun, M(Sun, Mei)1; James C. Hower3; Hu, GQ(Hu, Guangqing)1,4; Wu, D(Wu, Dun)1,4; Liu, Guijian
2018-05-04
发表期刊Fuel
卷号228期号:2018页码:279-308
文章类型期刊论文
摘要The huge demand for high-quality coal in China has resulted in increased generation of preparation plant wastes of various properties. A series of beneficiation products collected from a preparation plant were characterized to understand their petrographic and mineralogical characteristics, as well as thermochemical and trace element behavior during combustion. The minerals in the Luling preparation plant wastes from Huaibei coalfield mainly included kaolinite and quartz, with minor calcite, ankerite, pyrite, illite, chalcopyrite, albite, K-feldspar, anatase/rutile, and iron-oxide minerals. Massive clay lumps of terrigenous origin, cleat-infilling carbonate, and pyrite of epigenetic origin were prone to be enriched in the middlings and coal gangue. Minor or trace heavy minerals also reported to the preparation plant wastes. The contents of low-density density vitrinite and liptinite were enhanced in the clean coal, while inertinite-maceral group were enriched in the middlings. The modes of occurrences of toxic elements differed between raw coal and the waste products; and their transformation behavior during heavy medium separation is largely controlled by clay minerals (V, Cr, Co, Sb, and Pb), carbonate
minerals (Co and Pb), sul
fide minerals (As, Cu, Ni, Cd, and Zn) and organic matters (V, Cr, Se, and Cu). Three groups were classified based on the volatile ratio (Vr) of toxic elements. Group 1 includes the highly volatile element Se with Vr > 85%; Group 2 contained elements As, Pb, Zn, Cd and Sb, with the Vr in the range of 2085% and V, Cr, Co, Ni and Cu with Vr less than 20% were placed into Group 3. Thermal reactivity of coal
inferred from the combustion pro
files could be significantly improved after coal beneficiation, whereas the increased inorganic components probably inhibited the thermal chemical reaction of wastes.
关键词Preparation Plant Wastes Toxic Elements Mineralogy Modes Of Occurrences Volatility
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5251
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, Guijian
作者单位1.CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui230026, China
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China
3.University of Kentucky, Center for Appl Energy Research, 2540 Research Park Drive, Lexington, KY 40511, United States
4.Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei, Anhui 23008, China
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Fu, B,Liu, GJ,Sun, M,et al. A comparative study on the mineralogy, chemical speciation, and combustion behavior of toxic elements of coal beneficiation products[J]. Fuel,2018,228(2018):279-308.
APA Fu, B.,Liu, GJ.,Sun, M.,James C. Hower.,Hu, GQ.,...&Liu, Guijian.(2018).A comparative study on the mineralogy, chemical speciation, and combustion behavior of toxic elements of coal beneficiation products.Fuel,228(2018),279-308.
MLA Fu, B,et al."A comparative study on the mineralogy, chemical speciation, and combustion behavior of toxic elements of coal beneficiation products".Fuel 228.2018(2018):279-308.
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