1. PAINPOINT DRIVEN OPENING

Are your gold processing operations constrained by inefficient ore liberation and inconsistent throughput? Key challenges in primary grinding and comminution often include:

High Operational Cost: Excessive energy consumption per ton of ore milled, coupled with frequent liner and grinding media replacement, directly erodes profit margins.
Unplanned Downtime: Mechanical failures in drive systems or bearing assemblies halt entire processing lines, costing thousands per hour in lost production.
Inconsistent Grind Size: Poor control over particle size distribution from the stamp mill can lead to suboptimal gold recovery in downstream cyanidation or gravity circuits, leaving value in the tailings.
Labor Intensity & Safety: Reliance on manual monitoring and adjustment of traditional stamp mills increases labor costs and exposure to hazardous moving parts.

Is your operation seeking a robust, costeffective primary crushing and grinding solution that delivers consistent performance, reduces total cost of ownership, and maximizes gold liberation for recovery?

2. PRODUCT OVERVIEW

The modern China Stamp Mill for Gold Mining is a mechanized milling machine designed for the primary crushing and coarse grinding of goldbearing quartz ore. It functions as a reliable workhorse in small to mediumscale operations and remote locations, often serving as a critical first step in mineral liberation.

Operational Workflow:
1. Feed Introduction: Runofmine (ROM) ore is fed into a sturdy feed hopper, typically designed to handle lump sizes up to a specified maximum.
2. Mechanical Percussion: Powered by an electric motor or diesel engine via a crankshaft and cam arrangement, heavy cast iron or steel stamps (shoes) are lifted and dropped in a cyclical motion.
3. Ore Pulverization: The falling stamps impact the ore placed upon a fixed anvil (die), fracturing the quartz matrix to release encapsulated gold particles.
4. Slurry Formation & Discharge: Water is introduced during milling to create a slurry, which flows over an integrated screen or grate, allowing sufficiently ground material to pass through for further processing.

Application Scope & Limitations:
Scope: Ideal for hard rock gold ore processing, particularly in regions with limited infrastructure. Suited for pilot plants, artisanal and smallscale mining (ASM) formalization projects, and secondary milling applications.
Limitations: Not designed for ultrafine grinding required for refractory ores. Throughput is generally lower than highspeed ball mills or vertical roller mills. Optimal performance requires regular mechanical maintenance of moving parts.

3. CORE FEATURES

HeavyDuty Cast Iron Stamps | Technical Basis: Highdensity cast iron construction with reinforced heads | Operational Benefit: Delivers maximum impact force per drop for effective fracture of quartz veins; withstands repeated impact with minimal deformation | ROI Impact: Extended service life reduces media replacement frequency and associated downtime costs by up to 30% compared to inferior alloys.

Modular Die & Screen System | Technical Basis: Interchangeable hardened steel die blocks and screen plates | Operational Benefit: Allows operators to quickly change target grind size or replace worn components without specialized tools | ROI Impact: Minimizes changeover time from hours to minutes, increasing plant availability.

GearDriven Camshaft Assembly | Technical Basis: Enclosed gearbox driving a solid steel camshaft | Operational Benefit: Provides consistent liftanddrop motion with higher torque transmission efficiency than beltdriven systems; sealed from dust and slurry | ROI Impact: Field data shows a 1520% reduction in power consumption and higher mechanical reliability under continuous load.

Centralized Grease Lubrication System | Technical Basis: Manifold with feed lines to all major bearing points | Operational Benefit: Ensures critical bearings receive adequate lubrication on scheduled intervals, reducing friction and heat generation | ROI Impact: Directly prevents costly bearing seizure failures, extending major overhaul cycles.

Reinforced Structural Frame | Technical Basis: Fabricated from heavysection steel channels with crossbracing | Operational Benefit: Absorbs operational vibration and dynamic loads, ensuring longterm alignment stability of the stamp mechanism | ROI Impact: Protects capital investment by preventing frame fatigue cracks that compromise entire unit integrity.

Integrated Slurry Management Tray | Technical Basis: Corrosionresistant steel trough surrounding the die area | Operational Benefit: Efficiently channels pulp toward discharge outlet, preventing spillage and material buildup around the mill base | Operational Benefit: Improves working area safety and reduces material loss.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Stamp Mills) | Our China Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Energy Efficiency (kWh/ton) ~510 HP Stamp| High variance; often > 8 kWh/ton| Optimized gear drive & balanced stamps = 2,000 hours| ~66% Increase |
| Grind Consistency (% within target size fraction)| +/ 15% due to wear/wobble| Modular die system & stable frame = +/ 8% variance| ~47% Improvement |
| Annual Maintenance Labor Hours| Estimated 150200 hours/year| Centralized lube system & modular parts = < 100 hours/year| ~50% Reduction |

5. TECHNICAL SPECIFICATIONS

Model Range & Capacity: Available in 1stamp (0.50.8 TPD), 3stamp (1.52.5 TPD), and 5stamp (35 TPD) configurations under continuous operation.
Power Requirements: Electric motor driven options from 7.5 kW (10 HP) to 30 kW (40 HP). Diesel engine drive options available for offgrid applications.
Material Specifications: Stamps made from ASTM A48 Class 40 Cast Iron; Wear surfaces (die/screen) from highcarbon steel; Main frame from Q235B structural steel.
Physical Dimensions (Typical 3Stamp Mill): Footprint approx. 2.2m L x 1.8m W x 2m H; Weight approx. 4,500 kg.
Environmental Operating Range: Designed for ambient temperatures from 10°C to +45°C; Dust and water splash protection standard on bearings.

6. APPLICATION SCENARIOS

SmallScale Hard Rock Mine Consolidation | Challenge: A cooperative of artisanal miners was using disparate, manuallyoperated hammer mills leading to poor recovery (78%, reduced operating costs by centralizing power supply/maintenance, and established a safer, more controllable production environment.

Pilot Plant & Bulk Sampling Operation | Challenge: An exploration company needed reliable onsite coarse crushing/grinding for bulk samples from multiple prospects without the capital expense of larger milling circuits.| Solution: Deployment of a mobile skidmounted single stamp mill unit powered by a diesel generator.| Results: Enabled rapid processing of over 500 tons of bulk sample material across three sites with minimal setup time provided clear metallurgical data at low operational cost per site

7 COMMERCIAL CONSIDERATIONS

Equipment Pricing Tiers: Pricing is structured based on stamp quantity/drive configuration:
Base Model SingleStamp Mill
Standard ThreeStamp Mill
HeavyDuty FiveStamp Mill
Custom SkidMounted / Mobile Units
Optional Features: Diesel power pack integration; Spare parts kits; Wear part packages; Advanced slurry discharge screens; Sounddamping enclosures.
Service Packages: Tiered offerings include Basic Warranty , Extended Service Plan , OnSite Installation Supervision , Operator Training Programs .
Financing Options: Equipment financing can be arranged through partner institutions . Leasetoown structures are available subject to credit approval .

8 FAQ

Q1 What is the typical feed size requirement for your stamp mill?
The mill is designed for runofmine ore ideally reduced to 50mm lumps via primary jaw crushing . Oversize feed significantly accelerates wear .

Q2 Can this equipment be integrated into an existing CIP/CIL plant circuit?
Yes . The stamp mill serves as an effective primary grinder . Its discharge slurry can be fed directly into a secondary ball mill or classification system ahead of leaching tanks .

Q3 What are the lead times for delivery?
Standard model lead times range depending on configuration . We maintain inventory for common models .

Q4 What technical support is provided after purchase?
Support includes detailed installation manuals wiring diagrams video guides access via email phone Parts lists are provided digitally

Q5 Are your mills compliant with international machinery safety standards?
Our manufacturing follows core safety principles including guarded moving parts emergency stop provisions stable base design However final sitespecific guarding compliance remains responsibility

Q6 How does pricing compare relative sourcing other regions?
By leveraging mature supply chains efficient manufacturing we offer total cost ownership advantage including shipping duties without compromising material quality key components

Q7 What key spare parts should we plan keep stock?
We recommend holding spares based annual consumption including stamp shoes die blocks screen plates specific bearing sets This minimizes potential downtime waiting international shipments