For small-scale diamond mining operations, efficient crushing and sand-making equipment is critical to maximize diamond recovery from ore. A compact production line typically includes jaw crushers, cone crushers, vibrating screens, and sand makers.
1. Primary Jaw Crusher: Breaks raw ore (<350mm) into smaller chunks (50-100mm). Model example: PE-400×600 (Feed opening: 400×600mm, Capacity: 15-50t/h).
2. Secondary Cone Crusher: Further reduces material to 10-30mm. Example: PYB900 (Max feed: 115mm, Output size: 15-30mm).
3. Sand Maker (VSI Crusher): Produces 0-5mm sand for diamond separation. Model: VSI7611 (Throughput: 60-180t/h, Power: 110kW).
| Equipment | Model | Feed Size (mm) | Output Size (mm) | Capacity (t/h) | Power (kW) |
|—————–|———-|—————-|——————|—————-|————|
| Jaw Crusher | PE-400×600 | ≤340 | 40-100 | 15-50 | 30 |
| Cone Crusher | PYB900 | ≤115 | 15-30 | 50-90 | 55 |
| Sand Maker | VSI7611 | ≤50 | 0-5 | 60-180 | 110 |
Q1: How to minimize dust in small-scale crushing?
A: Use water spray systems and enclosures for crushers/screens.
Q2: What’s the optimal feed size for diamond recovery?
A: Final sand at ≤5mm ensures efficient separation via jigging or panning.
Location: Sierra Leone
Configuration: PE-400×600 Jaw Crusher + PYB900 Cone Crusher + VSI7611 Sand Maker + Dehydration Screen.
Result: Achieved 85% diamond recovery rate with final sand output of
