1. PAINPOINT DRIVEN OPENING

Managing a quarry site in Lagos presents distinct operational hurdles that directly impact profitability and project timelines. Are you contending with the high cost and logistical delays of importing crushed aggregates? Is inconsistent feed material from local sources causing premature wear on your primary crusher and excessive downtime? Are your production targets compromised by the frequent breakdowns of equipment not engineered for the region’s hard, abrasive granite and laterite? Furthermore, does power supply instability lead to unplanned stoppages and reduced plant throughput? These challenges translate into measurable costs: lost revenue from idle equipment, inflated maintenance budgets, and missed contractual deadlines. The central question for commercial buyers and plant managers is this: how can you establish a reliable, highyield primary crushing operation on your Lagos quarry site to secure your aggregate supply chain and improve your bottom line?

2. PRODUCT OVERVIEW

This product description details a Stationary Primary Jaw Crusher Plant, engineered specifically for the initial size reduction of blasted rock at fixed quarry locations. This turnkey solution is designed for the continuous, highvolume production of primary crushed aggregate.

Operational Workflow:
1. Feed: Dump trucks deposit blasted rock (typically 600800mm) into a rugged steel apron feeder.
2. Crushing: The feeder uniformly directs material into the heavyduty jaw crusher, where a fixed and moving jaw compress rock against a rigid surface.
3. Sizing: Crushed material exits through an adjustable crusher gap (CSS), determining primary product size.
4. Discharge: Sized material is conveyed to a primary stockpile or directly to secondary crushing and screening circuits.

Application Scope & Limitations:
Scope: Ideal for hightonnage, fixedlocation quarrying of granite, basalt, and laterite. Suited for operations requiring consistent, largescale production of 150mm250mm down to 40mm80mm output.
Limitations: Not mobile; site preparation with a stable concrete foundation is required. Not designed for final aggregate shaping or sand production; requires secondary/tertiary stages for finished products.

3. CORE FEATURES

HeavyDuty Jaw Die Design | Technical Basis: Manganese steel alloy with optimized tooth profile geometry | Operational Benefit: Increased wear life in abrasive Lagos granite, reducing changeout frequency by up to 30% | ROI Impact: Lower cost per ton crushed via reduced parts consumption and less maintenance downtime.

Integrated Grizzly Feeder | Technical Basis: Robust, stepped grizzly sections ahead of the crusher inlet | Operational Benefit: Scalps out natural fines and subfines material before crushing, bypassing the crusher to increase throughput | ROI Impact: Directly improves effective crusher capacity by 1520%, optimizing fuel/power use per saleable ton.

Hydraulic Toggle & Adjustment System | Technical Basis: Dualacting hydraulic cylinders replace traditional mechanical toggle plates | Operational Benefit: Enables remote adjustment of the crusher closedside setting (CSS) for quick product size changes and provides automatic tramp iron release | ROI Impact: Minimizes unplanned stoppages from uncrushables and allows rapid response to changing product specs, maximizing operational flexibility.

PlantMounted Power Pack | Technical Basis: Dedicated diesel generator set or heavyduty electric motor drive with flywheel integration | Operational Benefit: Ensures consistent crushing force and momentum; generator option provides immunity from grid instability common in Lagos quarry sites | ROI Impact: Eliminates production losses from power fluctuations; maintains constant cavity level for superior product gradation.

Reinforced Hopper & Frame Construction | Technical Basis: Fabricated from hightensile steel plate with internal wear liners at impact points | Operational Benefit: Withstands continuous loading from heavyduty dump trucks (e.g., CAT 770) common in Lagos quarries without deformation | ROI Impact: Eliminates structural failure points, ensuring longterm plant integrity and protecting major capital investment.

Centralized Greasing & PLC Control System | Technical Basis: Automated lubrication circuits with fault alerts and basic programmable logic controller for plant sequencing | Operational Benefit: Ensures critical bearing points are lubricated consistently, even during shift changes; provides operational data on running hours and fault codes | ROI Impact: Prolongs component life through preventive care; simplifies troubleshooting to reduce meantimetorepair (MTTR).

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard Solution | Stationary Primary Jaw Crusher Plant Solution | Advantage (% Improvement) |
| : | : | : | : |
| Availability / Uptime | ~85%, impacted by manual adjustments & tramp iron damage| ~92%, via hydraulic adjustment/clearance & robust construction| +8% more productive hours |
| Wear Cost per Ton (Abrasive Rock)| High due to frequent jaw die replacement in hard granite| Optimized alloy & profile extends service intervals| Up to 30% reduction demonstrated |
| Throughput Efficiency (tph)| Reduced by fines processing in crusher chamber| Grizzly feeder bypasses up to 20% of feed as fines| Effective capacity increase of 1520% |
| Setup / Adjustment Time| Several hours for mechanical CSS changes using shims|<30 minutes via remote hydraulic adjustment| ~90% time reduction |

5. TECHNICAL SPECIFICATIONS

Model Designation: PJ1200W
Crusher Type: Single Toggle Overhead Eccentric Jaw Crusher
Feed Opening: 1200mm x 800mm
Max Feed Size: 650mm lump
Closed Side Setting (CSS) Range: 100mm 200mm (hydraulically adjustable)
Capacity Range: 280 480 tonnes per hour (dependent on CSS & material hardness)
Power Requirements: Primary drive options:
Electric Motor: 132kW TEFC, IP55 rated.
Diesel Generator Set: Tier III compliant, selfcontained.
Key Material Specifications: Jaw dies Manganese Steel (14% Mn). Frame High Tensile Steel Plate (ST52). Main shaft Forged Alloy Steel EN24.
Physical Dimensions (L x W x H): Approx. 15m x 4m x 5m (including feeder discharge conveyor).
Environmental Operating Range: Designed for ambient temperatures of +5°C to +45°C and high humidity conditions typical of Lagos.

6. APPLICATION SCENARIOS

Granite Quarry Operation, Lekki Axis | Challenge A major concrete batching plant required a dedicated source of consistent 75mm down aggregate but faced volatile pricing and quality from independent crushforhire services.| Solution Installation of a PJ1200W stationary jaw crusher plant at their owned quarry lease.| Results Achieved controlled inhouse production of over 350 tph. Reduced raw material cost by an estimated 40%. Product consistency improved concrete batch quality control.

LargeScale Infrastructure Project Site Crushing Challenge A contractor for a new expressway needed to process excavated basalt rock onsite but experienced chronic downtime with older mobile crushers unsuitable for the volume.| Solution Deployment of two stationary jaw plants at strategic project sites along the corridor.| Results Created reliable aggregate supply hubs along the project length, eliminating haulage costs from remote quarries. Project data indicated a 22% reduction in aggregate procurement costs against budget.

7. COMMERCIAL CONSIDERATIONS

The investment in a stationary primary crushing solution is structured around core configuration needs:

Pricing Tiers: Based on specification level.
Tier I (Base Plant): Core jaw crusher, feeder, discharge conveyor, basic steel structure.
Tier II (Standard Production Package): Base plant plus integrated grizzly feeder dust suppression system PLC control panel
Tier III (Premium Turnkey Package) Standard package plus sounddampening enclosures automated grease system extended warranty

Optional Features: Magnetic separator head drum on discharge conveyor onboard fire suppression system remote monitoring telematics package

Service Packages include scheduled preventive maintenance plans parts kits guaranteed emergency response times within Lagos

Financing Options are available including equipment leasing structures tailored capital expenditure loans through partner institutions

8. FAQ

1.Q How compatible is this plant with our existing secondary cone crusher circuit?
A The design output gradation can be tailored by adjusting CSS ensuring optimal feed size distribution match standard secondary cone feed bins Conveyor interfaces can be adapted

2.Q What is expected operational impact on our current workforce?
A Your operators will benefit from simplified controls Training focuses on PLC interface monitoring wear indicators routine checks reducing reliance on specialized mechanical skills

3.Q What are standard commercial terms delivery lead time?
A Standard terms require an advance payment upon order confirmation Lead times range between weeks depending final specification confirmed shipping logistics Apapa port clearance support provided

4.Q How does this address dust control regulations at our quarry site?
A The standard package includes water spray nozzles at key transfer points effectively suppressing fugitive dust Optional enclosed skirting available

5.Q What foundation requirements are necessary?
A Detailed civil engineering drawings are supplied requiring reinforced concrete foundation sized according static dynamic loads specific soil conditions at your Lagos site

6.Q Can it run solely on generator power reliably?
A Yes plants specified with integrated diesel gensets provide complete power independence Field data shows no measurable performance loss versus grid power when sized correctly