Complete Crushing Plant Design: From Primary to Final Product

Crushing Plant Design Principles

A well-designed crushing plant balances throughput, product specification, energy consumption, and capital cost. This guide walks through the key decisions at each stage.

Typical Circuit Configurations

Two-Stage Crushing (Soft Rock / Aggregate)

Vibrating Feeder → Jaw Crusher → Vibrating Screen → (Oversize) → Cone/Impact Crusher → Screen → Product

Suitable for limestone, coal, and medium-hardness materials where final product is ≤25mm.

Three-Stage Crushing (Hard Rock / Mining)

Feeder → Jaw Crusher → Screen → Cone Crusher (standard) → Screen → Cone Crusher (short-head) → Screen → Product

Essential for hard ores (granite, basalt, iron ore) requiring product ≤10mm for grinding circuit feed.

Equipment Selection by Stage

Primary Crushing

• Jaw crusher: Feed sizes 300–1200mm, capacities 50–800 t/h
• Gyratory crusher: For large-capacity mining operations (>1000 t/h)

Secondary Crushing

• Cone crusher (standard): For hard, abrasive materials
• Impact crusher: For soft to medium-hard materials with cubical product shape

Tertiary Crushing

• Cone crusher (short-head): Fine crushing for grinding circuit feed
• VSI crusher: For premium-shaped sand and aggregates

Screening & Conveying

• Vibrating screen: Match deck configuration to product specifications
• Belt conveyor: Size for peak throughput with 10% surge capacity

Key Design Considerations

1. Surge capacity: Include sufficient buffer between stages (100–200t surge bins)
2. Closed-circuit vs open-circuit: Closed-circuit for precise product size control
3. Redundancy: Critical operations may need standby equipment
4. Dust suppression: Essential for environmental compliance
5. Maintenance access: Design layout for easy equipment servicing

Omnimech Turnkey Solutions

Omnimech provides complete crushing plant design, equipment manufacturing, installation, and commissioning services. Our engineering team delivers optimized flowsheets tailored to your ore characteristics and production targets.

Request a plant design proposal with your feed material analysis and capacity requirements.