Mining Bond Work Index: work_index
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 | notes | specific gravity (dimensionless) |
|---|---|---|---|---|---|---|---|
| work_index | Basalt | 18.9 | 6.5 | 0.5 | Basalt | Wi avg 18.9 kWh/t (85 tests); SG=2.91; hard volcanic rock; aggregate use | 2.91 |
| work_index | Bauxite | 9.5 | 2.5 | 0.04 | Bauxite | Wi avg 9.5 kWh/t; SG=2.36; range 6-14; soft ore low Ai; Bayer process feed | 2.36 |
| work_index | Calcite (pure calcium carbonate) | 3.5 | 3 | 0.05 | Calcite (pure calcium carbonate) | Wi avg 3.5 kWh/t (very soft); SG=2.71; lowest energy sedimentary carbonate | 2.71 |
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