ASTM-D1857 Historical Revision Information
Standard Test Method for Fusibility of Coal and Coke Ash

ASTM-D1857 - 2004 EDITION - SUPERSEDED
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Standard Test Method for Fusibility of Coal and Coke Ash
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Scope

1.1 This test method covers the observation of the temperatures at which triangular pyramids (cones) prepared from coal and coke ash attain and pass through certain defined stages of fusing and flow when heated at a specified rate in controlled, mildly reducing, and where desired, oxidizing atmospheres.

1.2 The test method is empirical, and strict observance of the requirements and conditions is necessary to obtain reproducible temperatures and enable different laboratories to obtain concordant results.

1.3 The values stated in inch-pound units are to be regarded as the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

Design of most coal combustion and coal conversion equipment anticipates that the ash either remain solid or assume some degree of fluidity, depending on the particular design. Ash fusibility temperatures predict whether the ash will perform properly in the process for which the coal was chosen.

Keywords

calibration-coal analysis instrumentation; coal and coal products-coal/coke ash; coke-ash; cone preparation; furnaces; fusibility; heating tests-coal/coke; reducing atmosphere test; sieve analysis-coal/coke; thermocouples; fusibility of coal/coke ash; ICS Number Code 73.040 (Coals)

To find similar documents by ASTM Volume:

05.06 (Gaseous Fuels; Coal and Coke)

To find similar documents by classification:

73.040 (Coals Including lignites Coal products, see 75.160.10)

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Document Number

ASTM-D1857-04

Revision Level

2004 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

July 1, 2004

Document Type

Test Method

Page Count

5 pages

Committee Number

D05.21