1. PAINPOINT DRIVEN OPENING

Are you facing persistent bottlenecks in your gold recovery circuit? Inconsistent grind size from your milling operation directly reduces leach efficiency and gold yield. Frequent liner replacements and unplanned maintenance on your grinding equipment cause costly production halts, while high energy consumption per ton of ore erodes your profit margins. Are abrasive, hardrock ores accelerating wear on critical components, leading to excessive spare parts inventory and operational risk? Your operation requires a reliable, efficient comminution solution engineered for longevity. How do you achieve consistent, optimal liberation of gold particles while controlling operational costs and maximizing mill uptime? The answer lies in a purposebuilt Chinese Stamp Mill for gold mining.

2. PRODUCT OVERVIEW

This product is a modern, industrially manufactured Chinese Stamp Mill, a mechanized gravityimpact crushing and grinding machine designed for the liberation of freemilling gold from quartz and other host rocks. It is not a historical replica but an engineered piece of mineral processing equipment built with contemporary materials and manufacturing standards.

Operational Workflow:
1. Feed: Runofmine or primarycrushed ore (<50mm) is fed into a mortar box.
2. Impact Grinding: Mechanically lifted heavy stamps (shoes) are released to drop onto the ore bed within the mortar box, repeatedly pulverizing the material through gravity impact.
3. Slurry Formation & Wash: Water is introduced into the mortar box, creating a slurry of crushed material.
4. Discharge: The fine slurry washes over an internal screen, exiting the mill for subsequent gravity concentration (e.g., sluices, shaking tables).

Application Scope & Limitations:
Ideal For: Small to mediumscale operations, pilot plants, or specific circuits targeting freemilling alluvial or hardrock gold deposits where cyanidefree processing is preferred or as a primary grinder ahead of leaching.
Limitations: Not suitable for ultrafine grinding requirements (<100 mesh). Efficiency decreases with highly clayey or sticky ores that can impede slurry flow. Requires a consistent feed size for optimal operation.

3. CORE FEATURES

HeavyDuty Cast Iron Mortar Box | Technical Basis: Highmass, wearresistant casting | Operational Benefit: Withstands continuous highimpact forces without cracking or deformation, providing a stable grinding chamber | ROI Impact: Eliminates frequent chamber replacement costs and associated downtime.

Modular TungstenCarbide Tip Stamps | Technical Basis: Extreme hardness and abrasion resistance of carbide inserts | Operational Benefit: Stamp shoes maintain effective weight and geometry far longer than traditional steel, ensuring consistent grind energy | ROI Impact: Reduces stamp replacement frequency by over 300%, lowering parts costs and labor.

Centralized Grease Lubrication System | Technical Basis: Automated delivery of lubricant to all major bearings and pivot points | Operational Benefit: Your operators benefit from reduced manual greasing intervals, ensuring critical components are always protected | ROI Impact: Prevents catastrophic bearing failure; field data shows a 40% reduction in bearingrelated stoppages.

Adjustable Discharge Screen Grid | Technical Basis: Interchangeable screen plates with defined aperture sizes | Operational Benefit: Allows plant managers to control product size distribution to match downstream recovery unit requirements | ROI Impact: Optimizes overall recovery circuit efficiency by delivering consistently sized material.

Robust Structural Steel Frame with Vibration Dampening | Technical Basis: Engineered rigidity with isolated mounting points | Operational Benefit: Minimizes transmission of operational vibration to the foundation and surrounding structures, enhancing stability and longevity | ROI Impact: Reduces structural maintenance costs and prevents ancillary equipment fatigue.

DirectDrive or BeltDrive Configuration Options | Technical Basis: Flexible power transmission design | Operational Benefit: Enables compatibility with various available prime movers (electric motor or diesel engine) at your site | ROI Impact: Simplifies integration into existing power infrastructure without costly adapters.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Basic Hammer Mill/Ball Mill for Small Scale) | Our Chinese Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Wear Part Lifetime (Grinding Media) | 200 400 hours (hammer tips/balls) | 1200+ hours (carbidetipped stamps) | +300% |
| Energy Efficiency (kWh/ton) ~25mm feed to 1mm product| ~12 15 kWh/ton (ball mill inefficiency at small scale) | ~8 10 kWh/ton (gravityimpact efficiency) | Up to 33% Reduction |
| Noise Level During Operation| 95 105 dB(A) (highimpact metalonmetal) | 82 88 dB(A) (contained crushing in mortar box) | ~15% Reduction |
| Recovery of Free Gold in Grinding Circuit| Potential for mercury formation/smelting loss in ball mills| Liberated gold can be captured via integrated gravity tray before discharge| Significant reduction in downstream loss |
| Maintenance Simplicity| Requires technical knowledge for liner replacement/alignment| Modular stamp design allows for changeout by general plant personnel| Reduces specialist labor requirement by ~50% |

5. TECHNICAL SPECIFICATIONS

Model Range Capacity: 0.5 – 5 Tonnes Per Hour (feed dependent on ore hardness).
Power Requirement: 7.5 kW – 30 kW (10 HP – 40 HP), depending on model size and stamp configuration.
Stamp Weight: Individual stamps from 150 kg to 500 kg.
Material Specifications: Mortar Box: Highchrome cast iron; Stamps: Forged steel body with tungstencarbide tips; Frame: Heavyduty structural steel (S355 equivalent).
Physical Dimensions (Typical Model): Length: ~3.5m, Width: ~2m, Height: ~2.5m.
Environmental Operating Range: Ambient Temperature: 20°C to +45°C; Designed for dusty conditions with sealed bearing housings.

6. APPLICATION SCENARIOS

HardRock Quartz Vein Mining – West Africa Challenge:

A contractoroperated mine faced excessive downtime replacing worn hammers in their small ball mill circuit every three weeks due to highly abrasive quartz ore, halting production for a full day each time.

Solution:

Implementation of a threestamp Chinese Stamp Mill with carbidetipped shoes as the primary grinder.

Results:

Stamp shoe replacement interval extended to over four months of continuous operation. Combined with lower energy consumption, total grinding cost per ton was reduced by an estimated 28%. Liberated coarse gold was also recovered via an integrated catch tray before cyanidation.

Alluvial Processing Plant Upgrade – Southeast Asia Challenge:

A processing plant using rudimentary crushing methods experienced poor overall recovery due to inconsistent particle size fed to their shaking tables, leaving locked particles unrecovered.

Solution:

Integration of a Chinese Stamp Mill into the circuit after primary scrubbing to provide a controlled, consistent grind size.

Results:

Plant managers reported a much more uniform feed to concentration tables. Industry testing demonstrated improved liberation led to a measurable increase in overall gravity recovery yield by approximately 15%, paying back the equipment investment within one season.

7. COMMERCIAL CONSIDERATIONS

Pricing Tiers: Pricing is modeldependent based on throughput capacity and stamp count.
Tier I (0.51 TPH): Entrylevel pricing for pilot or microoperations.
Tier II (13 TPH): Standard range offering optimal balance of capability and investment.
Tier III (35 TPH): Heavyduty configuration for established smallscale plants.
Optional Features: Integrated water supply system; Starter motor control panel; Spare parts kit including extra stamps/screens; Sounddampening enclosures.
Service Packages: Available packages include commissioning supervision, annual preventative maintenance inspections, and priority spare parts dispatch agreements.
Financing Options: Equipment financing can be facilitated through partnered financial institutions offering leasetoown or term loan structures tailored to mining cash flow cycles.

8.FAQ

Q1 Is this Chinese Stamp Mill compatible with my existing crushing circuit?
Yes it is designed as modular plant Equipment Typically installed after primary jaw crushing it accepts minus two inch feed Material Conveyor belt vibratory feeder or manual feeding can be used based on your site layout

Q2 What is the expected operational impact on my manpower requirements?
One trained operator can oversee multiple units Routine monitoring of lubrication system water flow and feed rate is primary The simplicity reduces reliance on highly specialized milling technicians

Q3 How does this affect my tailings management compared to other methods?
The stamp mill uses water as part of its process generating slurry Tailings volume consistency will be similar to other wet grinding processes Your existing pond or filtration system will typically accommodate it

Q4 What are the commercial terms regarding delivery warranty?
Standard terms are FOB China main port A twelve month warranty covers defects in materials workmanship Extended warranty available under service packages Delivery lead times vary by model complexity

Q5 Can you provide specific performance data for my ore type?
We require a five kilogram sample of your representative ore Our technical team conducts lab scale crush tests providing estimated throughput wear rates product size distribution data specific application

Q6 What optional features provide the best return on investment?
The centralized grease lubrication system offers strong ROI preventing downtime The tungsten carbide tipped stamps while higher initial cost deliver lowest long term cost per ton ground based field data

Q7 What training support provided during implementation?
Commissioning includes onsite training key personnel covering safe operation routine maintenance procedures troubleshooting common issues Comprehensive operations manual provided digitally print