Analysis of spontaneous combustion liability indices and coal recording standards/basis

作     者：A.R.Gbadamosi M.Onifade B.Genc S.Rupprecht A. R. Gbadamosi;M. Onifade;B. Genc;S. Rupprecht

作者机构：School of MiningMetallurgy and Chemical EngineeringUniversity of JohannesburgSouth Africa Department for Management of Science and Technology DevelopmentTon Duc Thang UniversityHo Chi Minh CityViet Nam Faculty of Applied SciencesTon Duc Thang UniversityHo Chi Minh CityViet Nam School of Mining EngineeringUniversity of the WitwatersrandJohannesburgSouth Africa 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2020年第30卷第5期

页      面：723-736页

核心收录：

学科分类：0819[工学-矿业工程] 081903[工学-安全技术及工程] 08[工学] 

基　　金：part of a Master study in School of Mining  Metallurgy and Chemical Engineering  University of Johannesburg  South Africa 

主　　题：Coal basis Correlation analysis Liability indices Spontaneous combustion 

摘      要：The characterization of the physical and chemical properties of coal on a standard provides an understanding of its characteristics towards spontaneous *** trend of linear relationships between coal recording standards(%air-dried(ad),%dry(db)and%dry ash free(daf)basis)of 30 selected coal samples from the Witbank coalfields and spontaneous combustion liability indices were *** spontaneous combustion liability indices of these samples were evaluated by crossing point temperature(XPT),Stage II Slope,FCC(Feng,Chakravorty,Cochrane)and the Wits-Ehac tests,while the coal properties were determined from the proximate and ultimate *** results obtained from these coal properties were related to different liability indices to develop trends of linear relationships using regression *** ad basis indicated higher correlation coefficients than the db and daf basis for the XPT and FCC index,while the daf showed higher correlation coefficients than the ad and db basis for the Wits-Ehac *** was found that the trend of linear relationships of these coal properties differs from one liability index to the *** XPTs showed a better trend followed by the Stage II Slope on the coal properties among the spontaneous combustion liability indices evaluated.