Research Article
Ash Evaluation of Indonesian Coal Blending for Pulverized Coal-Fired Boilers
Table 12
XRD analysis of BD-4A ash.
| Temp. (°C) | Compound name | Chemical formula | SemiQuant (%) |
| 550 | Quartz high | O2Si1 | 70 | Aluminum sulfate | Al2(SO4)3 | 30 |
| 600 | Quartz | O2Si1 | 78 | Potassium iron (III) oxide | Fe1K1O2 | 2 | Calcium sulfate | Ca(SO4) | 20 |
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