250-300 TPH Stone Crushing Plant: ODM Manufacturer Specification and Technical Overview

In the global mining and construction aggregates industry, the 250-300 tons per hour (TPH) stone crushing plant represents a critical mid-to-high capacity production line. It is widely deployed for processing hard rock, limestone, granite, basalt, and river gravel into various grades of aggregate for road construction, concrete production, and infrastructure projects. Original Design Manufacturer (ODM) solutions for such plants offer customized engineering, optimized layout, and integrated control systems tailored to specific client requirements. This article provides a comprehensive, technical specification overview of a 250-300 TPH stone crushing plant from a professional ODM manufacturer perspective, covering system architecture, key equipment, electrical and automation, structural design, and operational parameters.

1. General System Overview

A 250-300 TPH stone crushing plant is designed to process raw feed material with a maximum size typically up to 700-800 mm (depending on primary crusher type) and produce final aggregates in sizes such as 0-5 mm, 5-10 mm, 10-20 mm, and 20-40 mm, or custom fractions as per client specifications. The plant operates in a continuous, automated manner with a closed-circuit configuration for secondary and tertiary stages to ensure consistent product quality.

Typical Plant Configuration:

• Primary Crushing: Jaw Crusher (e.g., PE-900×1200 or equivalent)
• Secondary Crushing: Cone Crusher (e.g., CS160, HPC220, or Symons type)
• Tertiary Crushing: Vertical Shaft Impact (VSI) Crusher or additional Cone Crusher (optional for shaping)
• Screening: Vibrating screens (2-3 decks) for separation
• Conveying: Belt conveyors with proper transfer points and dust suppression
• Feed Hopper & Feeder: Vibrating grizzly feeder with pre-screening capability

Production Capacity: 250-300 TPH (based on material bulk density of 1.6 t/m³ and medium hardness)

2. Key Equipment Specifications (ODM Customizable)

2.1 Primary Jaw Crusher

• Model: PE-900×1200 or equivalent
• Feed Opening: 900 mm × 1200 mm
• Max Feed Size: ≤ 750 mm
• Discharge Range: 95-165 mm (adjustable)
• Capacity: 220-380 TPH (depending on closed side setting)
• Motor Power: 110-132 kW
• Weight: ~50-55 tons
• Features: Deep crushing chamber, high reduction ratio, hydraulic adjustment option (ODM upgrade)

2.2 Secondary Cone Crusher

• Model: CS160 (Standard or Fine type) or HPC220
• Feed Size: ≤ 200 mm (from primary)
• Discharge Range: 16-38 mm
• Capacity: 150-350 TPH
• Motor Power: 160-220 kW
• Features: Laminated crushing principle, hydraulic clearing, overload protection, automatic cavity clearing (ODM option)

2.3 Tertiary Crusher (Optional for Sand/Shaping)

• Model: VSI-9000 or VSI-1140
• Feed Size: ≤ 50 mm
• Capacity: 150-300 TPH
• Motor Power: 2×200 kW (dual motor)
• Features: Rock-on-rock or rock-on-anvil configuration, adjustable rotor speed, wear-resistant carbide tips

2.4 Vibrating Screens

• Model: 3YK-2460 (3-deck, 2.4 m × 6.0 m) or 2YK-2470
• Screen Area: 14.4 m² per deck
• Capacity: 200-400 TPH
• Motor Power: 30-37 kW
• Features: Circular motion, adjustable amplitude, polyurethane or woven wire mesh, dust-tight design

2.5 Vibrating Grizzly Feeder

• Model: ZSW-490×130 or ZSW-600×150
• Feed Size: ≤ 750 mm
• Capacity: 250-400 TPH
• Motor Power: 15-22 kW
• Features: Adjustable grizzly bars, pre-screening of fines, heavy-duty construction

2.6 Belt Conveyors

• Belt Width: 800 mm, 1000 mm, 1200 mm (depending on duty)
• Speed: 1.0-1.6 m/s
• Length: Customized per layout
• Motor Power: 7.5-30 kW per conveyor
• Features: Chevron or smooth belt, impact idlers at loading points, emergency stop switches, belt sway sensors

3. Electrical and Automation System

An ODM manufacturer typically provides a centralized electrical control system with the following specifications:

• Control Panel: PLC-based (Siemens, Mitsubishi, or Schneider) with HMI touch screen
• Motor Control Centers (MCC): IP54 rated, with VFDs for crushers and screens (optional)
• Power Supply: 380V/50Hz or 415V/50Hz (customizable to 60Hz)
• Total Installed Power: 600-800 kW (depending on equipment configuration)
• Protection Features: Overload, phase failure, under-voltage, emergency stop, interlock sequence
• Remote Monitoring: Optional SCADA interface for real-time data logging and diagnostics

Automation Functions:

• Sequential start/stop with time delays
• Crusher load monitoring and automatic feed rate adjustment
• Screen oversize recirculation control
• Dust suppression system integration
• Alarm and fault logging

4. Structural and Civil Engineering Specifications

• Foundation: Reinforced concrete with vibration isolation pads for crushers and screens
• Steel Structure: Hot-dip galvanized or painted structural steel (Q235B or Q345B) for platforms, walkways, and support frames
• Safety Features: Guardrails, toe boards, anti-slip grating, safety ladders
• Dust Control: Water spray nozzles at transfer points, enclosed conveyor covers, baghouse or wet scrubber (optional)
• Noise Reduction: Acoustic enclosures for crushers and screens (optional)

Footprint: Approximately 2500-3500 m² (depending on layout complexity and stockpile area)

5. Operational Parameters and Performance

• Material Hardness: Up to 300 MPa (e.g., granite, basalt)
• Moisture Content: ≤ 5% (dry process); wet process with washing system available
• Final Product Gradation: Adjustable via crusher settings and screen mesh selection
• Cubicity: ≥ 90% (with VSI tertiary)
• Flakiness Index: ≤ 10% (with proper crushing stages)
• Wear Parts Life: 200-500 hours (depending on material abrasiveness and crusher type)

Typical Power Consumption: 0.8-1.2 kWh per ton of crushed material

6. ODM Customization Options

An ODM manufacturer offers extensive customization to meet site-specific conditions:

• Mobile vs. Stationary: Skid-mounted or semi-mobile versions for temporary projects
• Crushing Circuit: Open or closed circuit; two-stage or three-stage
• Material Handling: Truck dump hopper, wheel loader feed, or conveyor feed
• Climate Adaptation: Cold-weather lubrication, tropical cooling, desert dust sealing
• Product Flexibility: Ability to produce multiple fractions simultaneously via split conveyors
• Aftermarket Support: Spare parts kits, remote troubleshooting, operator training

7. Quality Control and Compliance

ODM plants are manufactured in accordance with international standards:

• ISO 9001:2015 for quality management
• CE Marking (for European markets)
• GOST (for CIS countries)
• AS/NZS (for Australia/New Zealand)
• SANS (for South Africa)

Each component undergoes factory acceptance testing (FAT) and site commissioning. Crushers are tested for eccentric throw, bearing temperature, and vibration levels. Screens are balanced and tested for amplitude consistency.

8. Typical Layout Description

A standard 250-300 TPH plant layout follows a linear or L-shaped flow:

1. Feed Hopper & Feeder: Raw material is dumped into a 20-30 m³ hopper, fed by vibrating grizzly feeder. Fines (< 40 mm) are screened out and sent to stockpile or bypass conveyor.
2. Primary Jaw Crusher: Oversize material enters the jaw crusher, reduced to 150-200 mm.
3. Secondary Cone Crusher: Conveyed to surge bin, then fed into cone crusher for secondary reduction to 20-50 mm.
4. Vibrating Screen 1: Separates material into 0-5 mm, 5-20 mm, and oversize (> 20 mm). Oversize returns to cone crusher (closed circuit).
5. Tertiary VSI Crusher (optional): Material for sand or cubical aggregate is fed to VSI for shaping.
6. Final Screening: Second screen separates final products into multiple stockpiles via radial stackers or fixed conveyors.

9. Maintenance and Serviceability

• Crusher Liners: Easy access via hydraulic tools; manganese steel or alloy steel options
• Screen Mesh: Quick-change tensioning system
• Belt Conveyors: Self-cleaning tail pulleys, centralized lubrication points
• Inspection Doors: Provided at all crusher and screen access points
• Recommended Spare Parts Inventory: Jaw plates, cone liners, screen mesh, belts, bearings, hydraulic seals

10. Conclusion

A 250-300 TPH stone crushing plant from a professional ODM manufacturer represents a balanced, high-efficiency solution for medium-to-large scale aggregate production. The specification outlined above covers the core mechanical, electrical, and structural components, with ample room for customization to suit local material characteristics, regulatory requirements, and operational preferences. By selecting an ODM partner with proven engineering capability, clients benefit from optimized plant performance, reduced downtime, and long-term reliability. Whether for greenfield projects or capacity expansion, this plant capacity class remains a cornerstone of the global crushing industry.