ASTM D1857/D1857M-17a
Standard Test Method for Fusibility of Coal and Coke Ash

Standard No.
ASTM D1857/D1857M-17a
Release Date
2017
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D1857/D1857M-18
Latest
ASTM D1857/D1857M-24
Scope

5.1 The 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 help predict whether the ash will perform properly in the process for which the coal was chosen.

5.2 Ash fusibility temperature values are used in various equations to predict the slagging tendency of ashes.

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 either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3.1 All percentages are percent mass fractions unless otherwise noted.

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.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D1857/D1857M-17a Referenced Document

  • ASTM D2013 Standard Method of Preparing Coal Samples for Analysis
  • ASTM D3174 Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal
  • ASTM D3180 Standard Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
  • ASTM D346 Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
  • ASTM D3682 Standard Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes by Atomic Spectrometry
  • ASTM D4326 Standard Test Method for Major and Minor Elements in Coal and Coke Ash By X-Ray Fluorescence
  • ASTM D6349 Standard Test Method for Determination of Major and Minor Elements in Coal, Coke, and Solid Residues from Combustion of Coal and Coke by Inductively Coupled Plasma—Atomic Emission Spectrometry
  • ASTM D7448 Standard Practice for Establishing the Competence of Laboratories Using ASTM Procedures in the Sampling and Analysis of Coal and Coke
  • ASTM D7582 Standard Test Methods for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis

ASTM D1857/D1857M-17a history

Standard Test Method for Fusibility of Coal and Coke Ash


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