Table 1. XRD Test Results.
| treatment | mineral content (%) |
|||||
|---|---|---|---|---|---|---|
| time | quartz | feldspar | carbonate | clay minerals | pyrite | siderite |
| 0 d | 30.8 | 10.1 | 31.3 | 24.1 | 1.2 | 2.5 |
| 3 d | 36.6 | 8.6 | 28.3 | 23.4 | 1 | 2.1 |
| 7 d | 37.9 | 8.3 | 27.8 | 23.1 | 0.9 | 2 |
| 14 d | 38.7 | 8.1 | 27.5 | 23 | 0.8 | 1.9 |
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