A captive crushing and screening plant is a self-contained system designed to produce high-quality aggregates for construction, road building, and concrete production. These plants integrate primary crushing, secondary/tertiary crushing, screening, and sometimes sand washing to deliver customized particle sizes.
1. Primary Crusher: Typically a jaw crusher (e.g., Feed size: ≤1,200mm, Capacity: 50–800 t/h) or gyratory crusher for hard rock.
2. Secondary/Tertiary Crusher: Cone crushers (e.g., Output: 0–50mm, Capacity: 100–500 t/h) or impact crushers for finer shaping.
3. Vibrating Screens: Multi-deck screens (e.g., 2–4 decks, Screening efficiency: ≥90%) to classify aggregates into 0–5mm, 5–20mm, etc.
4. Sand Maker: VSI crushers produce manufactured sand (0–5mm) with adjustable fineness modulus.
| Equipment | Key Parameters |
|---|---|
| Jaw Crusher | Max feed: 1,200mm; Power: 90–315kW |
| Cone Crusher | Closed-side setting: 6–38mm; Capacity: up to 500 t/h |
| VSI Crusher | Throughput: 60–520 t/h; Rotor speed: 1,500–3,000 rpm |
Project: Limestone quarry in Texas, USA
Solution: A three-stage plant with jaw crusher (PE900×1200), cone crusher (HPT300), and VSI sand maker produced 0–5mm sand and 5–25mm aggregates for local concrete batching plants. Output reached 350 t/h with ≤3% oversize material.
Q1: How to reduce dust in crushing plants?
A: Use water sprays or dry fog systems at transfer points; enclose convey
