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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