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Errors in determining coal quality

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Abstract

Errors in determining coal quality are compared. For the example of the ash content, it is shown that the error in forming the samples is almost an order of magnitude greater than the error in sample analysis. The metrological characteristics and conditions of correct utilization of results from coal analysis are considered in the light of GOST R ISO 5725 standards. The correct comparison of results obtained by different methods is described.

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References

  1. GOST (State Standard) 10742-71: Lignite, Coal, Anthracite, Fuel Shale, and Coal Briquets: Methods of Sample Selection and Preparation for Laboratory Tests, 1971.

  2. GOST (State Standard) 11022-95: Solid Fuel: Methods of Determining the Ash Content, 1995.

  3. RMG 61-2003: Fossil Fuels: Precision, Correctness, and Reproducibility of Methods of Quantitative Chemical Analysis: Methods of Estimation, 2003.

  4. ISO 14909-(1-8):2001: Hard Coal and Coke: Mechanical Sampling, 2001.

  5. GOST R (Russian State Standard) ISO 5725-1-2002: Precision (Correctness and Reproducibility) of Methods and Measurement Results. Part 1: Basic Principles and Definitions, 2002.

  6. GOST R (Russian State Standard) ISO 5725-2-2002: Precision (Correctness and Reproducibility) of Methods and Measurement Results. Part 2: Basic Method of Determining the Repeatability and Reproducibility of the Standard Measurement Method, 2002.

  7. GOST R (Russian State Standard) ISO 5725-4-2002: Precision (Correctness and Reproducibility) of Methods and Measurement Results. Part 4: Basic Methods of Determining the Correctness of the Standard Measurement Method, 2002.

  8. GOST R (Russian State Standard) ISO 5725-6-2002: Precision (Correctness and Reproducibility) of Methods and Measurement Results. Part 6: Practical Use of Precision Methods, 2002.

  9. GOST (State Standard) 6382-2001 (ISO 562-98, ISO 5071-1-97): International Standard: Solid Fuel: Methods of Determining the Yield of Volatiles, 2001.

  10. GOST (State Standard) 27313-95 (ISO 1170-77: Solid Fuel: Quality Characteristics and Conversion Formulas for Different States of the Fuel, 1995.

  11. GOST (State Standard) 9516-92 (ISO 331-83): Coal: Method of Direct Gravimetric Determination of the Moisture Content in an Analytic Sample, 1992.

  12. Popov, V.K. et al., Metodika izmerenii. Opredelenie zol’nosti uglei spektrometricheskim metodom na sisteme Spektrotest (Measurement Method: Spectrometric Determination of the Ash Content of Coal by the Spektrotest System), Yekaterinburg: FGUP VUKhIN, 2011.

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Authors and Affiliations

  1. VUKhIN, Yekaterinburg, Russia

    V. K. Popov, V. I. Butakova & Yu. M. Posokhov

  2. “Bogatyr’ Komir,”, Ekibastuz, Kazakhstan

    I. L. Rachev

Authors
  1. V. K. Popov
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  2. V. I. Butakova
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  3. Yu. M. Posokhov
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  4. I. L. Rachev
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Corresponding author

Correspondence to V. K. Popov.

Additional information

Original Russian Text © V.K. Popov, V.I. Butakova, Yu.M. Posokhov, I.L. Rachev, 2012, published in Koks i Khimiya, 2012, No. 7, pp. 11–16.

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Popov, V.K., Butakova, V.I., Posokhov, Y.M. et al. Errors in determining coal quality. Coke Chem. 55, 261–265 (2012). https://doi.org/10.3103/S1068364X12070071

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  • DOI: https://doi.org/10.3103/S1068364X12070071

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