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Determination of ash in coals unusually high in calcite and pyrite

Industrial and Engineering Chemistry

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Abstract

The preliminary hearth heating method (A and E) gave results within the A. S. T. M. tolerances for all duplicates obtained in the same laboratory. Checks between different laboratories within A. S. T. M. tolerances were obtained for coals containing up to about 3.6 per cent mineral carbon dioxide, but these ashes contained larger amounts of retained sulfur. The determination of ash by the cold furnace method (B and F) gave duplicate results within A. S. T. M. tolerances for all samples in the U. S. Bureau of Mines laboratory and for samples up to about 1.6 per cent mineral carbon dioxide content in the Illinois Geological Survey laboratory. Checks between average values from the two laboratories were within A. S. T. M. tolerances for all samples.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Determination of ash in coals unusually high in calcite and pyrite
Series title:
Industrial and Engineering Chemistry
Volume
14
Issue:
3
Year Published:
1942
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Industrial and Engineering Chemistry
First page:
209
Last page:
212
Number of Pages:
4