Active standard | Published: 23/11/1989

ISO 8264:1989

Hard coal — Determination of the swelling properties using a dilatometer
(Houille — Détermination des propriétés de gonflement a l´aide d´un dilatometre)

Available languages: English, French

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 8264:1989

Publication date: 23/11/1989

Pages: 9

Country: International technical standard

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Anotation

Description / Abstract: A test piece, in the form of a pencil, prepared from powdered coal is heated at a constant rate in a steel retort positioned in a furnace, the temperature monitoring system having been previously calibrated using two reference metals of known melting points. The change in level of a piton resting upon the test piece is observed continuously, and record is produced which is characteristic of the swelling properties of the coal.

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