1. OUVERTURE ENTRAÎNÉE PAR POINT DE DOULEUR

La gestion d'un site de carrière à Lagos présente des obstacles opérationnels distincts qui ont un impact direct sur la rentabilité et les délais du projet.. 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? En outre, does power supply instability lead to unplanned stoppages and reduced plant throughput? These challenges translate into measurable costs: perte de revenus due à des équipements inutilisés, budgets de maintenance gonflés, and missed contractual deadlines. The central question for commercial buyers and plant managers is this: comment pouvez-vous établir un, highyield primary crushing operation on your Lagos quarry site to secure your aggregate supply chain and improve your bottom line?

2. APERÇU DU PRODUIT

This product description details a Usine de concasseur à mâchoires primaire stationnaire, 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.

Flux de travail opérationnel:
1. Alimentation: Dump trucks deposit blasted rock (généralement 600 800 mm) into a rugged steel apron feeder.
2. Écrasement: The feeder uniformly directs material into the heavyduty jaw crusher, where a fixed and moving jaw compress rock against a rigid surface.
3. Dimensionnement: Crushed material exits through an adjustable crusher gap (CSS), determining primary product size.
4. Décharge: Sized material is conveyed to a primary stockpile or directly to secondary crushing and screening circuits.

Champ d'application & Limites:
Portée: Idéal pour les tonnages élevés, fixedlocation quarrying of granite, basalte, et latérite. Suited for operations requiring consistent, largescale production of 150mm250mm down to 40mm80mm output.
Limites: Pas 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. CARACTÉRISTIQUES PRINCIPALES

Conception de matrice à mâchoires robuste | Base technique: Alliage d'acier au manganèse avec géométrie de profil de dent optimisée | Avantage opérationnel: Increased wear life in abrasive Lagos granite, réduisant la fréquence de changement jusqu'à 30% | Impact sur le retour sur investissement: Lower cost per ton crushed via reduced parts consumption and less maintenance downtime.

Mangeoire à grizzlis intégrée | Base technique: Robuste, stepped grizzly sections ahead of the crusher inlet | Avantage opérationnel: Scalps out natural fines and subfines material before crushing, bypassing the crusher to increase throughput | Impact sur le retour sur investissement: Directly improves effective crusher capacity by 1520%, optimizing fuel/power use per saleable ton.

Bascule hydraulique & Système de réglage | Base technique: Les vérins hydrauliques à double effet remplacent les plaques à bascule mécaniques traditionnelles | Avantage opérationnel: Enables remote adjustment of the crusher closedside setting (CSS) for quick product size changes and provides automatic tramp iron release | Impact sur le retour sur investissement: Minimizes unplanned stoppages from uncrushables and allows rapid response to changing product specs, maximiser la flexibilité opérationnelle.

PlantMounted Power Pack | Base technique: Dedicated diesel generator set or heavyduty electric motor drive with flywheel integration | Avantage opérationnel: Ensures consistent crushing force and momentum; generator option provides immunity from grid instability common in Lagos quarry sites | Impact sur le retour sur investissement: Eliminates production losses from power fluctuations; maintains constant cavity level for superior product gradation.

Trémie renforcée & Construction du cadre | Base technique: Fabricated from hightensile steel plate with internal wear liners at impact points | Avantage opérationnel: Withstands continuous loading from heavyduty dump trucks (par ex., CAT 770) common in Lagos quarries without deformation | Impact sur le retour sur investissement: Eliminates structural failure points, ensuring longterm plant integrity and protecting major capital investment.

Graissage centralisé & Système de contrôle PLC | Base technique: Automated lubrication circuits with fault alerts and basic programmable logic controller for plant sequencing | Avantage opérationnel: Garantit que les points de roulement critiques sont lubrifiés de manière constante, even during shift changes; provides operational data on running hours and fault codes | Impact sur le retour sur investissement: Prolongs component life through preventive care; simplifies troubleshooting to reduce meantimetorepair (MTTR).

4. AVANTAGES CONCURRENTIELS

| Mesure de performances | Solution standard de l'industrie | Solution d'usine de concasseur à mâchoires primaire stationnaire | Avantage (% Amélioration) |
| : | : | : | : |
| Disponibilité / Temps de disponibilité | ~85%, impacted by manual adjustments & tramp iron damage| ~92%, via hydraulic adjustment/clearance & construction robuste| +8% des heures plus productives |
| Coût d'usure par tonne (Roche Abrasive)| High due to frequent jaw die replacement in hard granite| Alliage optimisé & profile extends service intervals| Jusqu'à 30% réduction démontrée |
| Efficacité du débit (tph)| Reduced by fines processing in crusher chamber| Grizzly feeder bypasses up to 20% of feed as fines| Effective capacity increase of 1520% |
| Installation / Temps d'ajustement| Several hours for mechanical CSS changes using shims|<30 minutes via réglage hydraulique à distance| ~90% time reduction |

5. SPÉCIFICATIONS TECHNIQUES

Désignation du modèle: PJ1200W
Type de concasseur: Concasseur à mâchoires excentrique aérien à bascule unique
Ouverture d'alimentation: 1200mm x 800 mm
Taille maximale d'alimentation: 650mm morceau
Réglage du côté fermé (CSS) Gamme: 100mm 200mm (réglable hydrauliquement)
Plage de capacité: 280 480 tonnes par heure (dépendant du CSS & dureté du matériau)
Exigences d'alimentation: Primary drive options:
Moteur électrique: 132kW TEFC, IP55 rated.
Groupe électrogène diesel: Tier III compliant, selfcontained.
Spécifications des matériaux clés: Jaw dies Manganese Steel (14% Mn). Frame High Tensile Steel Plate (ST52). Main shaft Forged Alloy Steel EN24.
Dimensions physiques (L x l x H): Environ. 15m x 4m x 5m (including feeder discharge conveyor).
Plage de fonctionnement environnementale: Conçu pour des températures ambiantes de +5°C à +45°C et des conditions d'humidité élevée typiques de Lagos.

6. SCÉNARIOS D'APPLICATION

Exploitation d'une carrière de granit, Axe Lekki | 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. CONSIDÉRATIONS COMMERCIALES

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

Niveaux de tarification: Based on specification level.
Niveau I (Plante de base): Core jaw crusher, mangeoire, convoyeur de déchargement, structure de base en acier.
Niveau II (Standard Production Package): Base plant plus integrated grizzly feeder dust suppression system PLC control panel
Niveau III (Premium Turnkey Package) Standard package plus sounddampening enclosures automated grease system extended warranty

Fonctionnalités facultatives: 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