ISO 8264:1989
Hard coal; determination of the swelling properties using a dilatometer

Standard No.

ISO 8264:1989

Release Date

1989

Published By

International Organization for Standardization (ISO)

Latest

ISO 8264:1989

Scope

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.

ISO 8264:1989 history

• 1989 ISO 8264:1989 Hard coal; determination of the swelling properties using a dilatometer