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An Investigation into the Short Scale Spatial Variability of Sulfur Content in Coal Part II: Analysis of Sulfur in Washed Samples

 

作者: K. V. K. PRASAD,   R. V. RAMANI,   P. T. LUCKIE,  

 

期刊: Coal Preparation  (Taylor Available online 1994)
卷期: Volume 14, issue 1-2  

页码: 57-68

 

ISSN:0734-9343

 

年代: 1994

 

DOI:10.1080/07349349408905222

 

出版商: Taylor & Francis Group

 

关键词: Key words: Coal washability;sulfur content;spatial variability;geostatistics

 

数据来源: Taylor

 

摘要:

Analysis of longwall channel sample data discussed in the earlier paper by the authors revealed negligible spatial correlation in sulfur content over short distances. As most coal is washed prior to use in power plants, it was decided to investigate the spatial behavior of sulfur in washed samples. This paper discusses the results of the analysis of spatial variability of sulfur in homogeneous size-gravity fractions. Procedures used for data transformations, detection of outliers and estimation of robust and nonergodic variograms are also discussed.

 

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