✦ LIBER ✦
Comparison of the R70 self-heating rate of New Zealand and Australian coals to Suggate rank parameter
✍ Scribed by B.B. Beamish
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 122 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0166-5162
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✦ Synopsis
Samples from New Zealand and Australia have been tested in an adiabatic oven to assess the effect of rank on the R 70 selfheating rate of coal. A non-linear relationship can be defined for coals from both countries using the revised Suggate rank (S r ) parameter. Subbituminous coals have the highest R 70 self-heating rate values, which are 20 times that of high volatile A bituminous coals on a dry mineral matter free basis (~1 cf. 20 8C h À 1 ). However, the moderating effects of moisture and mineral matter can reduce this difference to only 2-3 times for coal in-situ.