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ISO 8264:1989 PDF
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Hard coal — Determination of the swelling properties using a dilatometer
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.
| Edition | 1989 |
|---|---|
| Published Date | 1989 |
| Published By | International Standardization Organisation |
| Page Count | 9 |
