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Basic Specification of tungsten Ores
| Grades | WO3 .Min.(%) | Impurities max.(%) | ||||||||||
| S | P | As | Mo | Mn | Cu | Sn | SiO2 | Ca | Sb | |||
| Tungsten Concentrate -I-2 | 70 | 0.4 | 0.03 | 0.08 | - | - | 0.05 | 0.1 | 5 | 4 | 0.05 | |
| Tungsten Concentrate -I-1 | 68 | 0.5 | 0.04 | 0.1 | 0.06 | 0.15 | 7 | 5 | 0.1 | |||
| Tungsten Concentrate-1-1 | 65 | 0.7 | 0.05 | 0.15 | 0.13 | 0.2 | 7 | 5 | ||||
| Tungsten Concentrate-1-2 | 65 | 0.7 | 0.1 | 0.1 | 0.05 | 0.25 | 0.2 | 5 | 3 | |||
| P+As | ||||||||||||
| Tungsten Concentrate-1-3 | 65 | 0.8 | 0.22 | 0.05 | 0.35 | 0.4 | 3.8 | 1 | ||||
| Wolfram-II-2 | 70 | 0.5 | 0.05 | 0.07 | 0.015 | 0.4 | 0.2 | 0.15 | 3 | 0.1 | ||
| Wolfram-II-1 | 70 | 0.6 | 0.1 | 0.1 | 0.02 | 0.5 | 0.25 | 0.2 | 3 | 0.2 | ||
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