crusher machine screen machine

Crusher and Screen Machines in Aggregate Production

Modern aggregate production lines rely heavily on crusher and screen machines to process raw materials into high-quality sand and stone aggregates. These systems are engineered for efficiency, durability, and precise particle size control.

Core Equipment Breakdown

1. Jaw Crusher
– Primary crushing for hard rocks (e.g., granite, basalt)
– Feed opening: 150×750mm to 1,500×2,100mm
– Capacity: 50–1,500 t/h

2. Cone Crusher
– Secondary/tertiary crushing with hydraulic adjustment
– Max feed size: ≤300mm
– Output gradation: 5–40mm adjustable

3. Vibrating Screen
– Multi-layer screening (2–4 decks)
– Screening accuracy: ±5% tolerance
– Power: 15–55 kW

Production Line Configuration Example

A typical 200tph granite processing line:
1. Primary jaw crusher → 2. Cone crusher → 3. Vibrating screen (closed-circuit) → 4. Sand maker (for 0–5mm particles) → 5. Belt conveyors

FAQ Section

Q: How to reduce dust in crushing plants?

A: Install water spray systems + enclosed conveyors + bag filters.

Q: What’s the lifespan of crusher wear parts?

A: Manganese steel jaws last ~500–800 hours; cone mantles ~300–600 hours depending on material abrasiveness.

Case Study: Limestone Quarry Upgrade

Location: Texas, USA | Output: 450tph | Equipment:

– Primary gyratory crusher (60″x89″)

– Two secondary cone crushers

– Triple-deck screens

Result: Achieved consistent 0–5mm, 5–20mm, and 20–40mm fractions with <3% oversize material.

Knowledge