1. OUVERTURE ENTRAÎNÉE PAR POINT DE DOULEUR

Are you facing persistent bottlenecks in your primary gold ore processing circuit? Operational data from hard rock gold mines consistently highlights three critical challenges: excessive downtime for liner changes and maintenance, inconsistent particle size distribution leading to poor cyanide leach recovery, and escalating energy costs per ton of ore processed. These issues directly impact your bottom line, translating to lost production hours, suboptimal gold yield, and shrinking profit margins.

How do you maintain throughput when dealing with increasingly complex ore bodies? Can your comminution circuit adapt without requiring a complete plant overhaul? The solution lies not in incremental adjustments, but in the foundational efficiency of your primary crushing and grinding equipment. Un robuste, wellengineered stamp mill remains a proven asset for specific gold mining operations seeking reliable, mechanical simplicity and high recoveries from freemilling ores.

2. APERÇU DU PRODUIT

This product line comprises heavyduty Stamp Mills for gold ore processing. Also known as a stamp battery or crushing stamp, this equipment utilizes a gravitydriven, mechanical pounding action to liberate gold from host rock.

Flux de travail opérationnel:
1. Alimentation: Sized ore (typiquement 2" à 3") est introduit dans une boîte à mortier.
2. Écrasement & Affûtage: Timbres entraînés par came (weighted rods with mallets) are lifted and dropped onto the ore within the mortar box.
3. Formation de boue: Water is introduced during the process, créer une bouillie de matériau broyé.
4. Décharge: The fine slurry passes through a perforated screen at the mortar box's end.
5. Concentration: The discharged slurry flows over amalgamation plates or to downstream concentration tables for gold recovery.

Champ d'application & Limites:
Idéal pour: Small to mediumscale operations processing freemilling gold ores (where gold is not encapsulated in sulfides), remote sites with limited access to grid power, or operations prioritizing mechanical reliability over ultrafine grinding.
Limites: Less efficient on refractory ores requiring fine liberation. Generally has a lower throughput capacity per footprint compared to modern ball mills or HPGRs in largescale operations. Requires consistent ore feed sizing for optimal performance.

3. CARACTÉRISTIQUES PRINCIPALES

Conception de batterie de tampons modulaire | Base technique: Independent unit construction | Avantage opérationnel: Enables phased plant expansion or individual battery maintenance without full shutdown | Impact sur le retour sur investissement: Reduces capital outlay for scaling and minimizes production loss during maintenance by over 60%

Forged Alloy Steel Stamps with Replaceable Heads | Base technique: Highcarbon steel forging for impact resistance | Avantage opérationnel: Extended service life under continuous impact; only the wear head requires replacement | Impact sur le retour sur investissement: Lowers consumable costs by 3540% compared to onepiece stamp replacement

PrecisionMachined Cam Shaft & Lifter Assemblies | Base technique: Balanced liftanddrop mechanics | Avantage opérationnel: Ensures consistent stroke length and timing for uniform particle size reduction | Impact sur le retour sur investissement: Improves downstream recovery consistency by promoting optimal leach feed size

Interchangeable Mortar Box Liners | Base technique: Modular wear plate system | Avantage opérationnel: Quick liner changeout (sous 4 heures) using standard plant tools | Impact sur le retour sur investissement: Cuts scheduled maintenance downtime by half, increasing annual operating hours

Integrated Water Injection Manifold | Base technique: Controlled slurry density management | Avantage opérationnel: Provides precise water addition at multiple points for efficient slurry formation and dust suppression | Impact sur le retour sur investissement: Optimizes water usage and ensures ideal viscosity for gold amalgamation or concentration

HeavyDuty Timber or Steel Frame Construction | Base technique: Vibrationdampening structural engineering | Avantage opérationnel: Absorbs operational shock, protecting foundations and ensuring longterm structural integrity | Impact sur le retour sur investissement: Eliminates costly foundation repairs and extends overall plant infrastructure life

4. AVANTAGES CONCURRENTIELS

| Mesure de performances | Norme de l'industrie (Anciennes usines de timbres) | Notre solution de moulin à timbres | Avantage (% Amélioration) |
| : | : | : | : |
| Temps de changement de doublure | 812 hours per battery | 50% plus rapide |
| Stamp Shaft Service Life| 1218 months under high load| 2430 months under high load| ~67% longer |
| Efficacité énergétique (kWh/tonne)| Varie considérablement; often unoptimized| Engineered cam profile reduces parasitic load| Jusqu'à 15% amélioration |
| Cohérence de la taille des particules (+/ % cible)| High variance due to wear/ timing drift| Maintained within 5% via precision machining| Significant improvement in control |
| Disponibilité annuelle (Scheduled ops)| ~8590% (downtime for maintenance)| >93% (conception modulaire)| 38% increase in productive time |

5. SPÉCIFICATIONS TECHNIQUES

Plage de capacité: Configurable à partir de 1 à 20 stamps per battery; débit de 0.5 à 5+ TPH per stamp depending on ore characteristics.
Exigences d'alimentation: Mechanically driven via line shaft or individual electric motors. Typical requirement ranges from 15 kW à 45 kW per stamp battery.
Spécifications matérielles: Mortar box liners are highchrome cast iron or manganese steel. Stamps are forged highcarbon steel with alloyed wear heads. Main frame is fabricated heavygauge steel or dense hardwood timber.
Dimensions physiques: Single stamp mill unit footprint approximately 2m x 3m x 4m (H). Custom configurations available.
Plage de fonctionnement environnementale: Designed for operation in ambient temperatures from 20°C to +50°C. Dust suppression system integral to design for dry environments.

6. SCÉNARIOS D'APPLICATION

Artisanal & Exploitation minière à petite échelle (ASM) Formalization Project

Défi: A cooperative needed reliable, lowtech but highrecovery equipment to process alluvial and hardrock ore, replacing inefficient manual methods while meeting environmental codes for mercury reduction.
Solution: Implementation of a cleangravity circuit centered on a fivestamp mill with integrated amalgamation plates and tailings capture.
Résultats: Achieved consistent recovery rates above 92% on freemilling ore while providing structured training on safe operation; reduced environmental impact through controlled processing.

Historic Mine ReTreatment Operation

Défi:A site reprocessing old tailings required a robust system capable of handling variable feed material without frequent clogging or excessive wear from abrasive content.
Solution:A customdesigned tenstamp mill with adjustable stroke length and hardened alloy liners was installed as the primary liberation step.
Résultats:The mechanical action proved highly effective on the brittle tailings material, achieving target grind size with lower energy consumption than alternative finecrushing options; payback period was achieved in under 14 mois.

7.CONSIDÉRATIONS COMMERCIALES

Our stamp mill solutions are offered in three primary tiers:

1.Standard Duty Battery: For consistent, moderateabrasion ores.Includes core features with standard liner materials.Ideal for new operations establishing baseline capacity.

2.HeavyDuty Battery: For highly abrasive or variable ore bodies.Includes upgraded alloy liners,cam shaft bearings,and reinforced frame.Recommended for highuptime operations.

3.Modular Expansion Units:For existing plants.Addon stamp units,mortar boxes,and drive components allow capacity increases without redesigning feed/discharge systems.

Les fonctionnalités optionnelles incluent des systèmes de lubrification à la graisse automatisés,vibration monitoring sensors,and custom discharge screen configurations.Service packages range from annual inspection plans to full spare parts kits.Financing options include leasetoown agreements tailored to seasonal cash flows common in mining,and milestonebased payment plans for new project development.

8.FAQ

Q:What upstream crusher is required to feed your stamp mill?
UN:A primary jaw crusher set to produce 2"à 3"feed is typically ideal.This ensures optimal performance and prevents unnecessary wear within the mortar box.

Q:What are the major operational cost drivers?
UN:The primary consumables are liner plates and stamp heads.Cost per ton is directly influenced by ore abrasiveness.Field data shows our interchangeable head system reduces these consumable costs by over onethird compared to legacy designs.

Q:What level of operator skill is required?
A.Stamp mills require less specialized operational knowledge than complex chemical processes.Training focuses on routine inspection,lubrification,and monitoring of slurry density,making them suitable for diverse workforces.

Q.How does this integrate with our existing cyanidation circuit?
A.The stamp mill serves as the primary liberation device.It produces a slurry that can feed directly onto vibrating screens ahead of your leaching tanks.Consistent particle size from our design improves reagent efficiency in downstream processes.

Q.What is the typical delivery lead time?
A.For standard configurations lead time ranges from16to24weeks.Custom designs may require additional engineering time.We provide detailed project timelines upon specification finalization.

Q.Are financing options available?
A Yes.We work with industryspecific financial partners.We can structure payments aligned with your project's commissioning phase or seasonal production cycles subjectto credit approval