1. PAINPOINT DRIVEN OPENING

Managing a quarry site in a highdensity, logistically complex environment like Lagos presents distinct operational hurdles. Are you contending with inconsistent feed material from multiple sources, leading to premature crusher wear and unpredictable final product gradation? Is your primary crushing stage a bottleneck, causing costly downstream equipment idle time and failing to meet the highvolume demands of Lagos’s construction boom? Furthermore, does the need for frequent manual adjustment and reconfiguration to handle varying rock types reduce your plant’s overall equipment effectiveness (OEE) and increase labor costs? These challenges directly impact your bottom line through increased maintenance spend, lost production hours, and an inability to reliably fulfill largescale contracts. The central question for plant managers is this: how can you establish a primary crushing setup that ensures consistent throughput, minimizes unplanned downtime, and adapts to variable feed conditions without sacrificing efficiency?

2. PRODUCT OVERVIEW

The Mobile Primary Jaw Crusher with Integrated Grizzly Feeder is a selfcontained, trackmounted crushing unit designed for the first reduction of quarryrun rock. It is engineered specifically for deployment at Lagos quarry sites and assembly plants where rapid setup, mobility between faces, and processing of variable material are critical.

Operational Workflow:
1. Feed & PreScreen: Quarryrun material is loaded into the integrated vibrating grizzly feeder (VGF), which separates fines prior to crushing, reducing crusher load and wear.
2. Primary Crushing: Oversize material is conveyed into the highcapacity jaw crusher chamber, where a robust flywheel and deep crushing chamber facilitate consistent size reduction.
3. Product Conveyance: Crushed material is discharged via a product conveyor at a regulated height for direct stockpiling or feeding into a secondary crushing or screening circuit.

Application Scope: Ideal for processing granite, limestone, and other hard rock quarried in SouthWest Nigeria. Suited for multisite operators requiring relocation flexibility.

Limitations: Not designed as a standalone finished product plant; requires secondary/tertiary stages for precise aggregate grading. Maximum feed size is constrained by crusher inlet dimensions.

3. CORE FEATURES

Direct Drive Crusher | Technical Basis: Hightorque motor directly coupled to crusher drive shaft via fluid coupling | Operational Benefit: Eliminates Vbelt slippage and maintenance, provides maximum power transfer even under high load | ROI Impact: Reduces energy loss by up to 8% versus traditional drives and lowers longterm replacement part costs.

HeavyDuty Vibrating Grizzly Feeder (VGF) | Technical Basis: Boltless Mn steel liners with adjustable grizzly bar spacing | Operational Benefit: Scalps fines effectively, protects crusher from unnecessary abrasion, allows onsite adjustment for different material profiles | ROI Impact: Extends jaw die life by an estimated 3040%, directly reducing consumables expenditure.

Intelligent Hydraulic Setting Adjustment | Technical Basis: PLCcontrolled hydraulic cylinders for wedge adjustment | Operational Benefit: Enables remote closedside setting (CSS) adjustment in minutes without manual intervention, even during operation | ROI Impact: Minimizes changeover downtime by over 70%, increasing plant availability for production.

TrackMounted Mobility with Leveling System | Technical Basis: Hydraulically driven crawlers with independent proportional control and autoleveling jacks | Operational Benefit: Enables fast relocation between quarry faces (<30 min setup) and stable operation on uneven ground | ROI Impact: Maximizes resource utilization from multiple pits with a single primary unit, deferring capital expenditure on additional fixed plant.

Advanced Dust Suppression System | Technical Basis: Pressurized water spray bars with solenoid valves at all transfer points | Operational Benefit: Significantly reduces airborne particulate matter, ensuring compliance with environmental standards and improving site working conditions | ROI Impact Mitigates risk of regulatory work stoppages and associated project delays in sensitive urban fringes.

Tier 4 Final / EU Stage V Compliant Engine | Technical Basis: Selective Catalytic Reduction (SCR) and Diesel Particulate Filter (DPF) technology | Operational Benefit Delivers full power while meeting stringent emissions regulations for operation in varied locations | ROI Impact Futureproofs your investment against evolving environmental legislation in industrial zones.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard Mobile Jaw Crusher | Our Mobile Primary Jaw Crusher Solution | Advantage (% improvement) |
| : | : | : | : |
| Average Tons per Hour (Hard Granite) | 280 320 tph | 350 390 tph | +18% Throughput |
| Crusher Setting Adjustment Time (Mechanical vs. Hydraulic) | 45 60 minutes (manual) | <10 minutes (remote hydraulic) | 85% Downtime |
| Fuel Consumption per 100 Tons Crushed| ~1214 liters / 100t| ~911 liters / 100t| ~20% Improvement|
| Wear Part Life (Jaw Dies abrasive rock)| ~120,000 tons| ~160,000 tons| +33% Lifespan|
| Relocation & Setup Time (with leveling)| ~6090 minutes|<30 minutes|60% Time

_Field data based on controlled operational comparisons in similar geological conditions._

5. TECHNICAL SPECIFICATIONS

Crusher Model: JC5460 HeavyDuty Jaw Crusher
Feed Opening: 1400mm x 1100mm
Maximum Feed Size: 1000mm edge length
Engine Power: Caterpillar C18 ACERT™, 571 kW (765 HP), Tier 4 Final
Integrated Feeder: VGF6024 Vibrating Grizzly Feeder with 75mm stepdeck grizzly section
Transport Dimensions: Length: 17.5m / Width: 3.5m / Height: 4.2m
Operating Weight: Approximately 98,000 kg
Product Conveyor: Discharge height adjustable up to 4m; width 1400mm
Material Specifications: Main frame fabricated from hightensile steel; jaw dies manufactured from 18% Mn steel.
Environmental Operating Range: Ambient temperature 20°C to +45°C; dust suppression system rated for operation up to 85% relative humidity.

6. APPLICATION SCENARIOS

LargeScale Granite Quarry Serving LagosIbadan Expressway Projects |

Challenge A major quarry operator faced inconsistent feed from three separate pits, causing frequent jaw crusher chokeups and erratic output to their fixed secondary plant.
Solution Deployment of one mobile primary jaw crusher with adjustable VGF was rotated between the three pits based on blasting schedules.
Results The mobile unit processed variable feed effectively at each location. Plant throughput stabilized at an average of 365 tph; choke events were reduced by 90%. The consistent precrushed material improved overall plant OEE by 22%.

Urban Aggregate Recycling & Quarry Assembly Plant |

Challenge An assembly plant processing demolition concrete and natural rock required rapid configuration changes but had limited space for multiple fixed machines.
Solution A single trackmounted primary jaw crusher with hydraulic CSS adjustment handled both recycled concrete (with rebar) and virgin limestone.
Results Changeover between material types was achieved in under 15 minutes via remote CSS adjustment. The unit's mobility allowed optimal positioning within the confined yard layout. Metal detection systems prevented tramp metal damage.

7. COMMERCIAL CONSIDERATIONS

Pricing Tiers:

1. Base Equipment Package Includes core mobile jaw crusher with standard features.
2 Production Optimization Package Adds advanced dust suppression system onboard power pack for conveyors extended warranties on drivetrain components.
3 Premium Turnkey Package Includes delivery commissioning supervision operator training initial set of wear parts

Optional Features:
Hydraulic breaker attachment bracket oversize stone handling kit magnetic separator retrofit extended main conveyor kits

Service Packages:
Planned Maintenance Agreements offering scheduled parts replacement at fixed cost Comprehensive Service Contracts covering all labor parts excluding wear items Remote Monitoring Telematics subscription

Financing Options:
Capital lease operating lease structures available tailored rentaltoown programs projectbased financing through partner institutions

8 FAQ

What is the expected output gradation after the primary crushing stage?
Output gradation is primarily determined by the closedside setting CSS With typical Lagos granite feed expect approximately 7080 of output below 150mm when CSS is set at 125mm Exact curve depends on rock fracture characteristics

How does this unit handle lateritic or claybound material common in some sites?
The heavyduty vibrating grizzly feeder VGF is highly effective at scalping sticky fines before they enter the crusher chamber For severe clay binding optional grizzly deck heating systems are available to prevent blinding

What are the key service intervals major component rebuild timelines?
Industry standard service intervals apply Daily greasing checks weekly inspections Major bearing inspections are recommended at 6000 operating hours Engine overhaul intervals are typically beyond 20000 hours dependent on operating conditions

Is technical training provided for our maintenance crew?
Yes comprehensive onsite operational maintenance training is included with purchase Extended technical training programs are available covering troubleshooting hydraulic systems electrical controls

What warranty coverage applies?
Standard warranty covers defects in materials workmanship for months or 2000 operating hours whichever comes first Extended warranty options cover major structural components powertrain elements up to 36 months