ASTM C831-98(2003)
Historical Standard: ASTM C831-98(2003) Standard Test Methods for Residual Carbon, Apparent Residual Carbon, and Apparent Carbon Yield in Coked Carbon-Containing Brick and Shapes
SUPERSEDED (see Active link, below)
ASTM C831
1. Scope
1.1 These test methods cover the determination of residual carbon content in carbon-bearing brick and shapes after a prescribed coking treatment. They provide two procedures. The first procedure is based on the combustion of carbon and its measurement as carbon dioxide. However, when using the first procedure for articles that contain silicon carbide or other carbides, no distinction will be made between carbon present in the form of a carbide and carbon present as elemental carbon. The second procedure provides a method for calculating apparent residual carbon (on the basis of weight loss after igniting the coked specimens), apparent carbonaceous material content, and apparent carbon yield. If the second procedure is used for brick or shapes that contain metallic additives or carbides, it must be recognized that there will be a weight gain associated with the oxidation of the metals, or carbides, or both. Such a weight gain can change the results substantially and this must be kept in mind when interpreting the data.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C571 Methods for Chemical Analysis of Carbon and Carbon-Ceramic Refractories (Withdrawn 1995)3
D2906 Practice for Statements on Precision and Bias for Textiles
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
Keywords
carbon yield; coking; loss of ignition; refractories; residual carbon;
ICS Code
ICS Number Code 91.100.15 (Mineral materials and products)
DOI: 10.1520/C0831-98R03
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