Mining Bond Work Index: work index
Iron ore (hematite) to Phosphate rock
Bond work index (Wi, kWh/ton) for 29 mineral and ore types, crusher performance parameters (jaw, gyratory, cone, HSI, VSI, roll, HPGR), and grinding mill design parameters (ball, SAG, AG, rod, vertical roller). Sources: Bond (1961), SME Mineral Processing Handbook 2019, Wills Mineral Processing Technology 8th Ed.
| parameter type | record id | Bond work index kWh per ton (kWh/ton) | Mohs hardness (dimensionless) | abrasion index Ai (dimensionless) | mineral or ore | specific gravity (dimensionless) |
|---|---|---|---|---|---|---|
| work index | Iron ore (hematite) | 12.9 | 5.5 | 0.25 | Iron ore (hematite) | 3.55 |
| work index | Iron ore (magnetite / taconite) | 16.1 | 5.5 | 0.55 | Iron ore (magnetite / taconite) | 3.88 |
| work index | Lead ore | 12.9 | 2.5 | 0.15 | Lead ore | 3.44 |
| work index | Lead-zinc ore (complex) | 13.8 | 3 | 0.25 | Lead-zinc ore (complex) | 3.55 |
| work index | Limestone | 13.8 | 3 | 0.1 | Limestone | 2.68 |
| work index | Magnetite (pure) | 11 | 6 | 0.3 | Magnetite (pure) | 5.18 |
| work index | Manganese ore | 13.5 | 5.5 | 0.4 | Manganese ore | 3.74 |
| work index | Molybdenum ore | 12.8 | 3 | 0.2 | Molybdenum ore | 2.7 |
| work index | Nickel ore | 13.6 | 4.5 | 0.4 | Nickel ore | 3.31 |
| work index | Phosphate rock | 10.1 | 3.5 | 0.1 | Phosphate rock | 2.74 |
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