1. PAINPOINT DRIVEN OPENING

Are you managing a gold processing operation where throughput, recovery rates, and operational costs are under constant pressure? The performance of your comminution circuit directly impacts your bottom line. Common challenges with conventional stamp mill operations include:
Excessive Downtime for Maintenance: Frequent liner changes, camshaft wear, and mortar box repairs lead to significant production halts.
Inconsistent Grind & Poor Liberation: Uneven particle size distribution from worn stamps or irregular feed can trap valuable gold within larger ore particles, reducing overall recovery in downstream processes like cyanidation or gravity concentration.
High Operational Costs: Significant energy consumption per ton of ore processed, coupled with high labor requirements for manual feeding and monitoring, erodes profit margins.
Scalability Limitations: Traditional designs often struggle with efficient throughput increases without major footprint expansion or duplicate mill installations.

How do you increase tonnage and improve gold liberation while controlling maintenance overhead and energy use? The solution requires a modernized approach to a proven technology.

2. PRODUCT OVERVIEW

Our White Label Stamp Mill is a modernized, heavyduty gravitydriven crushing mill engineered for the reliable comminution of goldbearing ores. It is designed as a core component for small to midscale processing plants, pilot operations, and heritage sites requiring robust, understandable technology.

Operational Workflow:
1. Controlled Feed: Ore is consistently fed via a regulated conveyor or feeder into the mortar box.
2. GravityDriven Crushing: Mechanically lifted stamps are released to drop onto the ore, utilizing kinetic energy for fracture.
3. Continuous Discharge: Crushed material passes through a perforated screen plate at the mortar box end, ensuring controlled product size.
4. Slurry Transport: The discharged pulp is typically directed to gravity concentration tables or a leaching circuit for gold recovery.

Application Scope & Limitations:
Ideal For: Freemilling gold ores, quartz vein material, pilot plant testing, and operations in regions with limited access to complex technical support or unstable power grids.
Best Suited To: Smalltomedium scale operations processing 50500 tons per day.
Limitations: Not optimal for very hard, abrasive ores (e.g., sulphides) without significant wear considerations. Requires consistent feed size (typically 2" feed) for optimal operation.

3. CORE FEATURES

Modular Mortar Box Assembly | Technical Basis: Bolttogether highchrome iron segments | Operational Benefit: Replace only worn sections in hours instead of replacing entire box or undertaking prolonged weld repair | ROI Impact: Reduces liner replacement downtime by up to 65% and cuts spare parts inventory cost

Precision Cam & Tappet System | Technical Basis: CNCmachined alloy steel cams with hardened tappet faces | Operational Benefit: Provides uniform lift and drop for all stamps, creating consistent particle size distribution and reducing harmonic vibration | ROI Impact: Improves grind consistency for better downstream recovery; extends mechanical component life by an estimated 40%

Variable Discharge Screen Plate | Technical Basis: Interchangeable screen plates with varied aperture sizing and material grades | Operational Benefit: Operators can quickly adjust final product size to optimize for either direct cyanidation or subsequent gravity concentration stages | ROI Impact: Increases process flexibility without mill modification; allows tuning for different ore types in minutes

Centralized Grease Lubrication System | Technical Basis: Automated manifold delivering grease to all major bearing points | Operational Benefit: Eliminates manual greasing during operation, enhancing safety and ensuring optimal bearing life under highload conditions | ROI Impact: Reduces scheduled maintenance time and prevents costly bearing failures due to missed lubrication points

Reinforced Composite Stamp Shoe | Technical Basis: Steelcore stamp with bonded highdensity wearresistant composite tip | Operational Benefit: Maintains crushing mass while dramatically increasing wear life compared to traditional allmetal shoes; reduces metalonmetal contact noise | ROI Impact: Field data shows a 3x increase in stamp shoe service life, directly lowering consumable costs per ton

Dynamic Frame Dampening | Technical Basis: Engineered rubber isolators mounted between the mill frame and foundation base | Operational Benefit: Absorbs operational vibrations, protecting the foundation and surrounding plant infrastructure from stress fatigue | ROI Impact: Eliminates costly foundation repairs and reduces structural maintenance over the plant's lifespan

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Stamp Mill) | Our White Label Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Maintenance Downtime (Annual)| 1015 days for liner/stamp replacement| 46 days with modular system| ~60% reduction |
| Energy Efficiency| ~5 kWh/ton (estimated) | ~3.8 kWh/ton (measured) | 24% improvement |
| Wear Part Cost/Ton| Baseline (1x) | 0.6x baseline cost| 40% reduction |
| Grind Consistency (P80 Variance)| High variance due to wear & manual feed| Low variance via precision mechanics & controlled feed| Up to 35% more consistent |
| Operational Labor| Constant monitoring/ adjustment required| Stable operation with automated lubrication & feed control| Estimated 30% reduction in direct oversight |

5. TECHNICAL SPECIFICATIONS

Capacity Rating: Configurable from 1 to 5 stamps; standard unit processes 80120 TPD depending on ore hardness and target grind size.
Power Requirements: Primary drive motor: 3075 kW (40100 HP), dependent on stamp configuration and weight. Standard supply: 415V/50Hz or 480V/60Hz.
Material Specifications: Mortar Box Liners: HighChrome Cast Iron (28% Cr). Stamps: Forged Steel Core with Composite Shoes. Camshaft: Alloy Steel EN24T hardened.
Physical Dimensions (5Stamp Mill): Operating Footprint approx.: Length=6m x Width=2m x Height=3m
Environmental Operating Range: Designed for ambient temperatures from 10°C to +45°C. Dust seals are standard; optional enclosures available for extreme environments.

6. APPLICATION SCENARIOS

MidScale Placer & Hard Rock Operation Challenge:

A West African operator faced declining recovery rates using aging stamp mills followed by sluices. Inconsistent grinding led to poor gold liberation before gravity separation.

Solution:

Implementation of two parallel White Label Stamp Mills configured with finer discharge screens paired directly with optimized shaking tables.

Results:

A more uniform grind size resulted in measurable improvements within one month of commissioning:
Gravity recovery rate increased by approximately 18%.
Overall plant throughput rose by an estimated due to reduced blockages downstream.
Maintenance shifts were reallocated from constant mill repair to proactive plant optimization.

Heritage Site & Demonstration Plant Challenge:

An educational mine park required reliable demonstration equipment that was both historically authentic in principle but safe and economical for intermittent use.

Solution:

A singlestamp White Label Mill was installed as the centerpiece of their processing exhibit.

Results:

The mill operates daily as part of guided tours with minimal routine upkeep thanks its robust construction.The park reports nearzero unscheduled maintenance costs over three years of operation while fulfilling its educational mission effectively.

7. COMMERCIAL CONSIDERATIONS

Our White Label Stamp Mills are offered in clear pricing tiers based on capacity:

Tier I – Single/Double Stamp Pilot Unit
Ideal for test plants
Includes basic drive
Manual lubrication system
Standard discharge screen

Tier II – Production Unit
Standardized threetofivestamp configuration
Includes variable frequency drive
Centralized automated grease system
Multiple screen plates included

Optional features include integrated belt feeders dust suppression spray bars full acoustic enclosures remote monitoring sensors

Service packages range from basic commissioning support through comprehensive annual maintenance contracts including scheduled parts replacement Financing options including equipment leasing are available through our partners subject to credit approval This enables capital preservation while bringing upgraded capacity online

FAQ

What type of ore feed size does your stamp mill require?
For efficient operation we recommend a maximum feed size of minus two inches (2") Consistent feed sizing prevents bridging in the mortar box ensures even wear across the shoe surface leading optimal crush efficiency

Can this mill integrate into my existing processing circuit?
Yes The White Label Stamp Mill is designed as modular replacement unit Its discharge height slurry density can be configured match your existing layout connection points gravity flow flumes pumps minimal adaptation required during installation phase

What is typical lead time delivery?
For standard configurations lead time ranges from weeks depending current order book complexity Custom configurations may require additional engineering time We provide firm delivery schedules upon order confirmation

Do you offer spare parts kits?
We recommend initial critical spares kit includes items like spare composite stamp shoes set screen plates tappets This kit minimizes potential production delays due unforeseen wear part failure ensuring maximum operational availability

How does pricing compare retrofitting my old mill versus purchasing new unit?
While retrofitting may seem lower cost upfront our analysis often shows total cost ownership new unit lower due significantly improved energy efficiency reduced downtime modern components provide We offer detailed comparative audit help make datadriven decision