Quarrying dolomite, calcite, and limestone requires specialized crushing and sand-making equipment to produce high-quality aggregates for construction. These materials vary in hardness (Mohs 3-4 for limestone/calcite, 3.5-4 for dolomite), demanding tailored production lines.
| Equipment | Model Example | Key Parameters |
|---|---|---|
| Jaw Crusher | PE600×900 | Inlet: 600×900mm, Capacity: 50-160t/h |
| Cone Crusher | HPT300 | Max Feed: 230mm, Output: 120-400t/h |
| Impact Crusher | PF1315 | Rotor Size: Φ1320×1500mm, Capacity: 100-280t/h |
| Sand Maker | VSI6X1263 | Throughput: 200-500t/h, Max Feed: 60mm |
| Screening Machine | S5X2760-3 | Screening Area: 27㎡, Layers: 2-3 |
A typical three-stage setup:
1. Primary crushing with jaw crusher (output ≤400mm)
2. Secondary crushing with cone crusher (output ≤50mm)
3. Tertiary shaping with VSI sand maker (0-5mm sand)
Q1: Which is better for limestone – impact or cone crusher?
A: Cone crushers suit harder limestone (>120MPa), while impact crushers work better for medium-hard materials (<100MPa).
Q2: How to reduce dust in dolomite processing?
A: Install water spray systems at transfer points and use enclosed conveyors.
