1. PAINPOINT DRIVEN OPENING

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. Consider these common challenges:
High Operational Costs: Excessive energy consumption per ton of ore processed, coupled with frequent maintenance cycles for worn stamper heads and dies, erodes profit margins.
Inconsistent Liberation: Poorly calibrated impact forces fail to achieve optimal particle size liberation, causing valuable gold to remain locked in waste rock and reducing overall recovery rates.
Excessive Downtime: Mechanical failures in the cam and lift mechanism lead to unplanned shutdowns, halting your entire processing circuit and delaying production targets.
Scalability Limitations: Traditional singlestamp setups cannot efficiently scale to match increased feed from modern excavation without multiplying footprint and operational complexity.
Labor Intensity: Manual feeding and discharge regulation, along with constant mechanical adjustment, require skilled attention that could be deployed elsewhere.

Is your operation achieving maximum yield from your ore? Can you reduce energy and maintenance costs while increasing throughput reliability? The solution lies in modernizing your primary reduction stage.

2. PRODUCT OVERVIEW: MODERN HEAVYDUTY STAMP MILL FOR GOLD ORE PROCESSING

This product line comprises heavyduty, mechanized stamp mills engineered for the primary crushing and coarse grinding of goldbearing quartz rock. Designed as a core component for small to midscale hard rock mining operations or as a supplemental unit for pilot plants, it transforms runofmine (ROM) ore into a granular feed suitable for secondary milling or direct cyanidation leaching.

Operational Workflow:
1. Controlled Feed: ROM ore (typically ≤6” diameter) is conveyed into a sealed feed hopper with a regulated gate to control flow.
2. Reciprocating Impact: A series of mechanically lifted, heavy cast iron or steel stamps (shoes) are dropped in sequence onto anvils (dies) within a mortar box, delivering controlled, highimpact force.
3. Continuous Pulverization: Ore is crushed by repeated impact. Water introduced into the mortar box creates a slurry that passes through a discharge screen.
4. Classification & Discharge: Crushed material meeting the target size exits via the screen; oversized particles remain in the mortar box for further impact.

Application Scope & Limitations:
Ideal For: Freemilling gold ores where cyanidation follows crushing; processing quartz, lode, or vein material; operations requiring robust, mechanically simple comminution.
Limitations: Not suitable for soft, clayrich ores that cause packing; less energyefficient than some modern ball mills for fine grinding; requires firm foundation due to vibrational forces.

3. CORE FEATURES

Modular Stamp Battery | Technical Basis: Independent camshaftdriven stamp assemblies | Operational Benefit: Allows for individual stamp maintenance or replacement without shutting down the entire mill. Operators can isolate one module while others continue running. | ROI Impact: Reduces planned maintenance downtime by up to 40% and maintains partial throughput during repairs.

HardFaced Composite Stamps & Dies | Technical Basis: Highchrome alloy wear surfaces welded to a ductile steel core | Operational Benefit: Increases service life of critical wear components by resisting abrasion and impact fatigue. Your team spends less time on component changeouts. | ROI Impact: Field data shows a 6080% improvement in wear life over standard manganese steel, directly reducing spare parts inventory costs and labor hours.

Variable Stroke Length Control | Technical Basis: Adjustable eccentric cam mechanism | Operational Benefit: Enables operators to finetune impact force and particle size output based on ore hardness and feed grade variability from different zones of your deposit. | ROI Impact: Optimizes liberation for your specific ore body, potentially improving downstream recovery rates by ensuring consistent feed sizing.

Enclosed Dust Suppression System | Technical Basis: Integrated water spray nozzles at feed point and sealed mortar box design | Operational Benefit: Significantly reduces airborne silica dust—a major health hazard—creating a safer working environment compliant with modern regulations. | ROI Impact: Mitigates risk of regulatory shutdowns and reduces liabilities associated with worker respiratory health.

Centralized Grease Lubrication System | Technical Basis: Automated manifold delivering lubricant to all major bearings and cam faces | Operational Benefit: Ensures critical moving parts receive consistent lubrication under highload conditions, preventing premature bearing failure. | ROI Impact: Extends major overhaul intervals by up to 50%, lowering longterm maintenance costs and preventing catastrophic breakdowns.

HeavyDuty Foundation Frame | Technical Basis: Reinforced Ibeam steel construction with vibrationdampening mounts | Operational Benefit: Absorbs operational shocks and vibrations, protecting the mill's structural integrity and minimizing stress transfer to the plant floor. | ROI Impact: Reduces longterm structural repair needs and allows installation on a wider range of site foundations.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Stamp Mill) | Modern HeavyDuty Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Tonnage Throughput (Hard Quartz Ore) | 0.5 1 TPH per stamp | 0.8 1.5 TPH per stamp (optimized design) | +50% Increased Capacity |
| Wear Component Life (Stamps/Dies) | 200 400 Operating Hours | 350 700 Operating Hours (HardFaced) | +75% Extended Service Life |
| Energy Efficiency (kWh/Ton) ~5Stamp Mill| ~12 15 kWh/Ton| ~10 12 kWh/Ton (Optimized Kinematics)| ~20% Reduced Power Cost |
| Mean Time Between Failure (MTBF) Major Components| ~1,000 Hours| ~1,500 Hours (Enhanced Lubrication & Sealing)| +50% Improved Reliability |
| OnSite Adjustment & Calibration Time| HalfDay Shutdown Required
for Stroke Adjustment| <2 Hour Runtime Adjustment
via External Controls| ~80% Reduction in Adjustment Downtime |

5. TECHNICAL SPECIFICATIONS

Model Range: Available in configurations from singlestamp pilot units to tenstamp production batteries.
Capacity Rating: Throughput scales from 1 TPH (single stamp) up to 15 TPH (10stamp battery), dependent on ore hardness and target grind size.
Power Requirements: Electric motor driven; power range from 7.5 kW (10 HP) for a single stamp to 75 kW (100 HP) for a tenstamp battery.
Material Specifications: Mortar box constructed from abrasionresistant steel plate (AR400/500). Stamps feature ductile steel cores with highchrome alloy wear faces.
Physical Dimensions (Typical 5Stamp Mill): Approx. Length: 3m x Width: 2m x Height: 2m (+feed hopper). Weight approx.: ~810 metric tons.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +45°C (4°F to +113°F). Enclosed components are rated for highhumidity/dusty environments typical of milling plants.

6 APPLICATION SCENARIOS

MidScale Lode Mining Operation

Challenge A West African mine using outdated threestamp mills faced low throughput (~3 TPH), causing a bottleneck ahead of their CIP plant Frequent die failures resulted in weekly stoppages
Solution Implementation of two modern fivestamp mills configured with hardfaced components variable stroke control
Results Throughput increased consistently stabilized at >12 TPH combined Downtime due wear part replacement decreased from hours month allowing plant meet its quarterly production target ahead schedule

Pilot Plant Test Facility

Challenge A mineral exploration company required reliable primary crushing unit test varying ore samples but needed adjust grind size quickly accurately between batches minimize crosscontamination
Solution Installation modular twostamp mill equipped centralized lubrication dust suppression system
Results Operators achieved precise reproducible crush sizes different ore types within minutes via stroke adjustment The enclosed design prevented sample contamination facilitated faster cleaner testing cycles accelerating project decision timelines

COMMERCIAL CONSIDERATIONS

Pricing is structured according to scale configuration:
Tier Basic SingleStamp Unit Includes core mill motor starter basic safety guards Ideal pilot plants assay offices Tier Standard – Stamp Battery Most common includes all core features dust suppression lubrication system modular design Tier Custom HighCapacity Plant Multiple linked batteries integrated conveyor systems automated feed controls

Optional Features Upgrades Include advanced vibration monitoring sensors remote operational diagnostics packages alternative wear material grades specific ore types

Service Packages Offered comprehensive warranties extended service plans covering parts labor Onsite training programs ensure your team achieves optimal operation Preventive maintenance schedules tailored your operating hours

Financing Options Flexible commercial leasing structures available allow you preserve capital Project financing can be bundled complete mineral processing circuits through our partner network

FAQ

What upstream equipment is required operate this stamp mill We recommend grizzly feeder jaw crusher produce consistent ≤6” feed rock ensure efficient operation prevent jamming

How does particle size output compare ball mill Our stamp mill produces coarser granular product typically ranging mesh ideal initial liberation free milling ores It often paired secondary ball mill finer grinding achieve optimal recovery rates complex ores

What typical installation commissioning timeline For standard – stamp unit experienced contractor site preparation foundation complete installation mechanical electrical tieins typically requires – business days Commissioning operator training adds additional days

Are spare parts readily available Yes Critical wear parts stamps dies standardized across our model range held global inventory stock ensuring fast delivery times minimize potential downtime We provide recommended spares list initial purchase

Do you offer performance guarantees Yes Our equipment comes performance guarantee regarding throughput capacity within specified ore hardness ranges Wear part life estimates based provided mineralogical data