1. OUVERTURE ENTRAÎNÉE PAR POINT DE DOULEUR

Are your gold recovery operations constrained by inefficient primary crushing and grinding? Legacy stamp mills and undersized equipment create persistent bottlenecks that directly impact your bottom line. Considérez ces défis communs:
Coûts opérationnels élevés: Consommation d'énergie excessive par tonne de minerai traité et fréquente, unplanned maintenance on worn stamps and dies drain profitability.
Débit incohérent & Récupération: Variable feed size and manual adjustments lead to uneven particle liberation, causing valuable gold to be locked in oversized material or lost as fines.
Temps d'arrêt excessif: Longue, laborintensive die replacement and alignment procedures halt your entire milling circuit, costing thousands in lost production per hour.
Limites d'évolutivité: Older stamp mill designs cannot easily adapt to increased ore volume or harder ore bodies without major capital investment.

Is your operation achieving optimal tonnage and recovery rates from your primary grinding circuit? Un moderne, heavyduty bulk stamp mill for gold mining is engineered to address these exact issues.

2. APERÇU DU PRODUIT

The Bulk Stamp Mill is a mechanized, highcapacity gravityimpact crushing and grinding machine designed for the primary reduction of goldbearing quartz rock. It serves as the foundational workhorse in hard rock gold processing plants, transformer mon runofmine (ROM) ore into a granular sand for subsequent concentration.

Flux de travail opérationnel:
1. Présentation du flux: Minerai ROM (typiquement 6" à 8") is continuously fed via a regulated conveyor or feeder into the mortar box of the stamp mill.
2. Concassage par impact gravitationnel: Multiple mechanically lifted stamps (pesée 8002,000 livres chacun) are sequentially dropped onto the ore bed within the mortar box, applying direct percussive force.
3. Réduction de la taille des particules: Ore is fractured by repeated impacts. Finer material passes through a perforated steel discharge screen at the mortar box's end, while larger pieces remain for further crushing.
4. Formation de boue & Décharge: Crushed material exits as a slurry (when water is introduced) or dry sand, ready for transport to secondary grinding or direct concentration via shaking tables or sluices.

Champ d'application & Limites:
Portée: Ideal for freemilling gold ores where coarse gold liberation is possible at relatively large particle sizes. Best suited for mediumtohigh tonnage operations requiring robust, continuousduty primary crushing.
Limites: Not suitable for ultrafine grinding requirements or highly refractory ores requiring chemical leaching at a very fine size. Performance is optimal with consistent feed size distribution.

3. CARACTÉRISTIQUES PRINCIPALES

Conception de boîte à mortier modulaire | Base technique: Highcarbon steel segmented casting with replaceable liners | Avantage opérationnel: Enables rapid liner replacement in sections without dismantling the entire mill structure, réduisant les temps d'arrêt pour maintenance jusqu'à 70%. | Impact sur le retour sur investissement: Direct labor cost savings and increased plant availability for production.

Arbre à cames de précision & Système de levage | Base technique: Forged steel camshaft with computerized numerical control (CNC)machined lift profiles | Avantage opérationnel: Ensures consistent lift height and timing for each stamp, promoting even wear distribution and stable power draw. | Impact sur le retour sur investissement: Predictable maintenance scheduling extends component life by an average of 40%, lowering spare parts inventory costs.

Système de lubrification automatisé | Base technique: Centralized grease manifold with programmable intervals for all highwear bearings | Avantage opérationnel: Élimine les points de graissage manuel, ensuring critical components are lubricated during operation without operator intervention. | Impact sur le retour sur investissement: Réduit de plus le risque de défaillance des roulements 60%, preventing costly secondary damage and unplanned stoppages.

Grille d'écran de décharge réglable | Base technique: Quickrelease tensioning system for varied screen plate apertures | Avantage opérationnel: Allows operators to adjust final product size in under 30 minutes to optimize downstream recovery based on ore characteristics. | Impact sur le retour sur investissement: Maximizes overall plant recovery rate by ensuring optimal feed size for concentration equipment.

HeavyDuty Foundation Frame | Base technique: Fabricated Ibeam steel structure with integrated vibration dampening mounts | Avantage opérationnel: Absorbe les charges dynamiques, protecting the mill's structural integrity and minimizing stress transfer to the plant floor. | Impact sur le retour sur investissement: Eliminates costly concrete foundation repairs and extends the operational lifespan of ancillary equipment.

Water Injection Manifold | Base technique: Strategically placed nozzles for controlled slurry density management | Avantage opérationnel: Provides optimal moisture content to suppress dust and facilitate material transport through the crushing chamber. | Impact sur le retour sur investissement: Improves working conditions (conformité réglementaire) and enhances material flow efficiency by up to 25%.

4. AVANTAGES CONCURRENTIELS

| Mesure de performances | Norme de l'industrie (Moulins hérités) | Bulk Stamp Mill Solution | Avantage (% Amélioration) |
| : | : | : | : |
| Débit (TPH)| Variable, often declining with wear| Consistent rated capacity maintained via wear compensation systems| +1525% Sustained Output |
| Stamp/Die Life| 200400 hours depending on ore abrasiveness| 550750 hours via proprietary alloy composition & hardening process| +80% Temps moyen entre les pannes |
| Efficacité énergétique| High kWh/ton due to mechanical losses & imbalance| Optimized kinetic energy transfer with balanced rotating assembly| 20% kWh/tonne |
| Temps moyen de réparation (MTTR)| 816 hours for major component changeover| <4 hours facilitated by modular design & panneaux d'accès sans outils| 65% Durée du temps d'arrêt |
| Cohérence de la taille du produit (± cible)| High variance affecting downstream processes| Low variance due to controlled drop height & screen regulation| +35% Size Uniformity |

5. SPÉCIFICATIONS TECHNIQUES

Capacité de la gamme de modèles: 10 – 150 Tonnes par heure (TPH), en fonction de la dureté du minerai et de la taille du produit cible.
Exigences d'alimentation: Entraînement par moteur électrique; 75 kW – 450 kW depending on model and stamp configuration (520 timbres).
Spécifications matérielles:
Timbres: Forged steel core with replaceable highchrome alloy foot.
Revêtements de boîtes de mortier: NiHard or Manganese Steel castings.
Cadre & Structure: Acier ASTM A36.
Dimensions physiques (Grand modèle typique): Longueur: ~7m, Largeur: ~4m, Hauteur: ~5 m (hors trémie d'alimentation).
Plage de fonctionnement environnementale: Conçu pour des températures ambiantes de 20°C à +50°C. Dust seals and protective coatings standard for highhumidity or mildly corrosive environments.

6. SCÉNARIOS D'APPLICATION

MidTier Gold Mine Expansion Project

Challenge A midtier operation needed to double its processing capacity but was limited by an antiquated, unreliable stamp mill that could not handle harder ore from a new vein.
Solution Installation of two highcapacity bulk stamp mills in parallel configuration was implemented as part of their plant upgrade plan.
Résultats Augmentation du débit de l'usine de 120%. Maintenancerelated downtime decreased from approximately 15% sous 4% of operating time within one year postinstallation.

Artisanal & Exploitation minière à petite échelle (ASM) Cooperative Consolidation

Challenge An ASM cooperative operating multiple small manual sites faced low overall recovery rates (<40%) due to inconsistent crushing across sites.
Solution A centralized processing facility was established around a single, automated bulk stamp mill with regulated feed conveyors.
Results The cooperative achieved a standardized crush size, improving overall recovery rates to consistently above 68%. The centralized operation also reduced environmental impact and improved safety oversight.

7. CONSIDÉRATIONS COMMERCIALES

Bulk Stamp Mill solutions are offered in three primary tiers:
1. Moulin à service standard: For lowertonnage operations (<30 TPH) processing softer ores. Includes core features like modular mortar box and heavyduty frame.
2. Moulin robuste: Pour les opérations courantes (30100 TPH). Adds automated lubrication system precision camshafts as standard.
3. Plant Core Mill: For hightonnage flagship operations (>100 TPH). Includes full instrumentation package remote monitoring ports premium alloy components

Optional features include advanced vibration monitoring sensors wear analytics software packages fully enclosed sounddampening housings

Service packages range from basic preventative maintenance plans upto comprehensive performance contracts guaranteeing uptime availability

Financing options include capital lease operating lease project financing structures tailoredto mine development timelines

8 FAQ

What upstream crusher feed size is required?
The bulk stamp mill is designedfor primary reduction It accepts direct feed froma jaw crusher producing material typicallyminus sixto eightinches Consistent feed sizeis criticalfor optimal performanceand wear life

Can this equipment integratewith our existing ballmillorconcentrationcircuit?
Yes Field data showsthe bulkstampmill effectively reducesoretoasizesuitableasfeedforsecondaryballmillingordirectgravityconcentration Its adjustable discharge screen allowstuningtheproductsizetomatchyourexistingcircuit's requirements

Quel est le calendrier typique d’installation et de mise en service?
Forastandardmodel deliveryis typically14weeks Site installationandmechanical commissioningbytrainedtechnicians requires approximately tentofourteendays assumingfoundationprepworkiscomplete Electrical integrationdependsonsitespecifics

Areoperatortrainingandtechnicalmanualsprovided?
Comprehensive digitalandhardcopy technicalmanuals aresupplied We provideonsite operatorandmaintenancetechnician trainingaspartofthestandard commissioningprocess Additional virtualtrainingmodules arealso available

Whatkindofsparepartsinventoryshouldweplanfor?
We recommendaninitialsparepartskit containing criticalwearitems like onefullsetofmortarliners twosetsofstampfeetandkeybearingassemblies This supportsproactivemaintenancewithoutrelyingonemergencyshipping leadtimes