1. PAINPOINT DRIVEN OPENING

Are you facing persistent bottlenecks in your gold recovery circuit? Inconsistent ore throughput, excessive liner and part wear, and unplanned maintenance downtime directly erode your profit margins. Each hour a stamp mill is offline for repairs or adjustment represents thousands in lost processing revenue. Furthermore, inefficient particle liberation can leave valuable gold locked in tailings, while high energy consumption per ton of ore processed squeezes operational budgets.

Are you asking how to:
Increase consistent throughput while managing variable ore hardness?
Reduce the frequency and cost of mechanical maintenance?
Improve overall recovery rates from complex ores?
Achieve predictable operating costs with lower energy consumption per ton?

A certified, modern stamp mill solution is engineered to address these exact operational challenges.

2. PRODUCT OVERVIEW

This certified stamp mill is a heavyduty, mechanized milling system designed for the reliable crushing and grinding of goldbearing quartz rock to liberate values for subsequent recovery processes. It operates on the proven principle of dropping heavy weights (stamps) onto ore fed into a mortar box.

Operational Workflow:
1. Feed: Runofmine or primarycrushed ore (<50mm) is continuously fed into the mortar box.
2. Pulverization: Mechanically lifted stamps are released in a controlled cycle, pulverizing the ore against a hardened die (mortar block) with repeated impact.
3. Wash & Discharge: A continuous water flow through the mortar box washes the finely ground pulp (slurry) over an apron or through screens for discharge to downstream concentration (e.g., sluices, shaking tables).

Application Scope & Limitations:
Scope: Ideal for small to mediumscale hard rock gold mining operations, pilot plants, and processing centers handling quartzdominant ores. Effective for both freemilling and some refractory ores requiring fine grinding.
Limitations: Not suitable for highclay or highly abrasive nongold ores without modification. Requires a consistent feed size and stable water supply. Operational noise and vibration necessitate proper site planning.

3. CORE FEATURES

HeavyDuty Cast Frame | Technical Basis: Singlepiece, highgrade cast iron construction | Operational Benefit: Provides absolute rigidity under dynamic loads, eliminating frame flex that causes misalignment and accelerated wear | ROI Impact: Reduces foundational stress cracks and associated longterm structural repairs by an estimated 6070%.

Precision Camshaft & Tappet Assembly | Technical Basis: Forged steel camshaft with inductionhardened lobes and adjustable tappets | Operational Benefit: Ensures uniform lift and drop timing for all stamps, promoting even wear distribution across the mortar box | ROI Impact: Increases liner life by up to 30% and stabilizes grind size output for improved recovery efficiency.

Modular Wear Liner System | Technical Basis: Interchangeable, alloysteel liner plates for mortar box sides and dies | Operational Benefit: Allows for staged replacement of only the worn components; dramatically simplifies maintenance | ROI Impact: Cuts liner replacement downtime by 50% and reduces spare parts inventory cost.

Optimized Water Injection Manifold | Technical Basis: Calibrated water ports with independent flow controls | Operational Benefit: Ensures optimal slurry density and consistent washthrough, preventing sandingup and maximizing gold particle transport to recovery units | ROI Impact: Directly contributes to a more stable process flow, supporting sustained recovery rates.

VibrationDamping Base Integration | Technical Basis: Engineered isolators between mill frame and concrete foundation | Operational Benefit: Significantly dampens transmitted vibration, protecting surrounding infrastructure and improving operator environment | ROI Impact: Lowers longterm foundation maintenance costs and reduces structural fatigue on ancillary equipment.

DirectDrive Power Transmission | Technical Basis: Hightorque motor coupled to gear reducer via guarded shaft connection | Operational Benefit: Eliminates efficiency losses from belt drives; provides consistent power delivery with lower maintenance requirements | Operational Benefit: Improves energy transfer efficiency by approximately 15% compared to traditional beltdriven systems.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Mills) | Certified Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Availability / Uptime| 8085% (frequent unplanned stops) |> 92% (scheduled maintenance only) |> +10% operational time |
| Liner Wear Life| 46 months average under standard feed| 810 months under comparable conditions |> +70% lifespan |
| Energy Consumption| Higher kWh/ton due to drivetrain losses| Optimized directdrive system |> 1215% reduction per ton processed |
| Grind Consistency (P80)| Variable (+/ 15%) due to mechanical wear| Stable (+/ 5%) through camshaft precision |> More predictable liberation |

5. TECHNICAL SPECIFICATIONS

Capacity/Rating: Configurable from 1 to 5 stamps; throughput range of 0.5 – 3.0 tonnes per hour per stamp, dependent on ore hardness.
Power Requirements: Electric motor drive recommended. Power range from 15 kW (single stamp) to 75 kW (5stamp battery), based on configuration.
Material Specifications: Highgrade cast iron main frame; Forged steel camshaft; Manganese steel or highchrome alloy wear liners; ASTM A36 structural steel supports.
Physical Dimensions (Typical 5Stamp): ~4m (L) x 2.5m (W) x 3m (H). Foundation design loads provided.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +45°C. Dust suppression via integrated water wash; requires covered or indoor installation for allweather operation.

6. APPLICATION SCENARIOS

MidScale Gold Processing Plant in West Africa

Challenge: A plant using outdated stamp mills experienced weekly breakdowns of worn tappets and camshafts, causing inconsistent grind size and an average availability of only 78%.
Solution: Replacement with a certified 4stamp mill battery featuring the precision camshaft assembly and modular liners.
Results: Mill availability increased to >91% within six months. Combined with stabilized grind size, overall plant recovery improved by an estimated 4 percentage points due to better liberation.

Artisanal & SmallScale Mining (ASM) Cooperative

Challenge: Multiple small teams using manual gravity systems sought a centralized, reliable primary grinding solution that was simple to operate and maintain without specialized skills.
Solution: Installation of a single certified stamp mill as a community processing hub.
Results: The cooperative standardized its feed preparation, increasing daily processed volume by 300%. The simplified liner replacement procedure allowed local technicians to perform all routine maintenance.

7. COMMERCIAL CONSIDERATIONS

Pricing Tiers: Pricing is structured per stamp unit within a modular frame.
Base Unit (Frame & Drive): Includes core structure, motor mount, drive train.
PerStamp Module Cost: Adds complete stamp assembly with liners.
Complete Battery Packages offer capital cost advantages over individual unit pricing.

Optional Features: Automated grease lubrication system; Ore feed hopper with vibrating feeder; Integrated safety guarding packages; Spare parts starter kits.

Service Packages: Extended warranty plans are available covering major structural components against casting defects beyond standard terms.Factorytrained technician commissioning support is strongly recommended.Preventive maintenance inspection contracts ensure optimal performance.

Financing Options: Equipment financing can be arranged through partner institutions.Tiered payment plans aligned with project milestones may be available.Longterm leasing structures are offered as an alternative to direct purchase.

8. FAQ

Q1 Is this stamp mill compatible with our existing gravity concentration circuit?
Yes.The discharge slurry density can be adjusted via the water manifold control.The grind size produced is specifically suited for efficient gravity separation in sluices or shaking tables downstream.Field data shows effective integration when feed size is properly managed upstream

Q2 What is the expected operational impact on our power consumption?
The directdrive system improves power transmission efficiency.You should expect lower kWh consumption per ton of ore processed compared to legacy beltdriven mills.A detailed power assessment based on your specific configuration will be provided during technical consultation

Q3 How does this equipment handle variations in ore hardness?
The adjustable tappet mechanism allows operators fine control over drop height which influences impact energy.This provides flexibility when processing zones of variable hardness within an acceptable range.Extremely hard materials may require reduced feed rates

Q4 What are typical lead times from order placement?
Standard configurations typically have lead times between 14 weeks depending on current manufacturing schedules.Custom configurations may require additional engineering time

Q5 What commercial terms are standard?
Standard terms include EXWorks shipping point.A deposit secures production slot balance due prior shipment.Comprehensive shipping logistics insurance installation support can be arranged as part of turnkey service packages

Q6 Are training materials provided for our operations team?
Yes.Comprehensive digital operation manuals parts diagrams video tutorials are supplied.Onsite operator training during commissioning is included with purchase

Q7 Can we source spare parts locally or must they come from OEM
Critical forged hardened components like cams tappets should be sourced as genuine parts ensure performance longevity.Common hardware items seals bearings can often be sourced locally using provided specifications