For contractors and aggregate producers in Albuquerque, crusher fine rock is a key material for road bases, landscaping, and concrete mixes. A well-designed crushing plant ensures high-quality fines with optimal gradation. Below is a breakdown of essential equipment and processes.
1. Primary Jaw Crusher: Reduces large rocks (up to 24″) to 6-8″ chunks.
– Model Example: JC5460
– Feed Opening: 54″ x 60″
– Capacity: 800–1,200 TPH
2. Secondary Cone Crusher: Further crushes material to 1″-3″ for fine processing.
– Model Example: CH660
– Max Feed Size: 13″
– Closed Side Setting: 3/8″–1-1/2″
3. Tertiary Vertical Shaft Impact (VSI) Crusher: Produces cubical crusher fines (≤3/8″).
– Model Example: B9100SE
– Rotor Speed: 1,500–2,500 RPM
– Throughput: 300–600 TPH
| Parameter | Target Value |
|---|---|
| Fines Content (-#200 mesh) | <15% |
| Los Angeles Abrasion Loss | <35% |
| Flat & Elongated Particles | <10% |
Q: How to minimize over-crushing?
A: Use multi-stage screening (e.g., banana screens) to recycle oversized material before VSI crushing.
Q: Best rock types for crusher fines?
A: Basalt and limestone are ideal due to their natural fracture patterns and durability.
A local contractor used a portable crushing plant (Jaw+ Cone+ VSI) to process volcanic rock into ASTM D
