1. PAINPOINT DRIVEN OPENING

Are you managing a gold processing operation where inconsistent throughput, high maintenance costs, and unpredictable recovery rates are eroding your profit margins? Operational challenges with your comminution circuit directly impact your bottom line. Consider these common issues:
Excessive Downtime: Unplanned stoppages for liner changes or mechanical repairs can cost thousands per hour in lost production.
Inefficient Grinding & Liberation: Poorly sized ore particles from inadequate stamp action lead to suboptimal gold liberation, trapping valuable material in tailings and reducing overall recovery.
High Operational Costs: Rising energy consumption per ton of ore processed, coupled with frequent replacement of wear parts, drives up your costperounce.
Scalability Limitations: Inflexible equipment that cannot adapt to varying ore hardness or feed grades complicates plant expansion and process optimization.

How do you achieve consistent, costeffective ore reduction for maximum gold recovery? The solution lies in moving beyond standard machinery to purposebuilt, heavyduty equipment engineered for relentless performance.

2. PRODUCT OVERVIEW

The Certified Stamp Mill is a heavyduty, mechanized milling system designed for the primary crushing and grinding of goldbearing quartz ore. It utilizes the controlled, repetitive impact of weighted stamps (shoes) to pulverize ore fed into a mortar box, liberating gold for subsequent cyanidation or gravity recovery processes.

Operational Workflow:
1. Feed & Containment: Runofmine or primarycrushed ore is fed into a sealed mortar box.
2. Mechanical Percussion: A camshaft lifts multiple cast iron or steel stamps (shoes) in sequence, which drop onto the ore bed under gravity.
3. Ore Reduction: The repeated impact fractures the quartz matrix, gradually reducing the ore to a fine sand or slime consistency.
4. Wash & Discharge: A continuous flow of water washes the finely ground pulp through a discharge screen, allowing sized material to exit for further processing.

Application Scope & Limitations:
Ideal For: Hard rock gold vein processing, pilot plants, smalltomedium scale operations (150 TPD), and sites prioritizing robust, simpler technology over complex ball mill circuits.
Limitations: Not suitable for soft, clayrich ores that cause packing; requires consistent feed size; generally has a lower throughput ceiling compared to large rotary ball mills.

3. CORE FEATURES

HeavyDuty Cast Mortar Box | Technical Basis: Singlepiece highcarbon steel casting with integral wear liners | Operational Benefit: Eliminates leakage points and provides superior abrasion resistance against quartz ore | ROI Impact: Reduces liner replacement frequency by an estimated 40%, lowering parts inventory and labor costs.

Precision Camshaft & Lifter Assembly | Technical Basis: Computerbalanced forged steel camshaft on oversized roller bearings | Operational Benefit: Ensures even stamp lift and drop timing, minimizing vibration and delivering consistent impact energy | ROI Impact: Improves grinding uniformity for better liberation; field data shows a 1525% reduction in bearingrelated downtime.

Modular Stamp Design | Technical Basis: Interchangeable stamp shoes with standardized locking mechanisms | Operational Benefit: Allows for rapid changeout of individual wear items without dismantling the mill frame | ROI Impact: Cuts maintenance windows by up to 60%, directly increasing plant availability.

Adjustable Discharge Grate System | Technical Basis: Perforated steel screens with quickrelease tensioning clamps | Operational Benefit: Enables operators to control product fineness by changing screen aperture size in minutes | ROI Impact: Provides process flexibility to optimize for different ore types without stopping the mill for extended periods.

Integrated Water Management Channels | Technical Basis: Engineered slurry launders cast into the base structure | Operational Benefit: Directs pulp flow efficiently to downstream concentrators, preventing spillage and crosscontamination | ROI Impact: Minimizes precious metal loss in transfer points and reduces cleanup water volume.

FoundationFree BoltDown Design | Technical Basis: Rigid baseframe with vibrationdampening pads | Operational Benefit: Simplifies installation on existing concrete pads or prepared gravel beds, eliminating the need for deeppoured foundations | ROI Impact: Reduces installation time and civil works costs by approximately 30%.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Stamp Mills) | Certified Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Mean Time Between Failure (MTBF)| 450 550 hours | 800+ hours (cam/lifter assembly) | +45% reliability |
| Tonnage per Wear Part Cost| $X per ton processed (baseline) | $0.75X per ton processed (estimated) |25% operating cost |
| Stamps ChangeOut Time| 812 hours for full set (est.)| <4 hours for full set |60% downtime |
| Energy Consumption per Ton| Baseline kWh/ton figure (est.)| 15% kWh/ton |15% energy use |
| Gold Recovery Efficiency| Baseline % from poorly liberated grind (est.)| +58 percentage points | |

_Dependent on overall circuit design; improvement attributed to more consistent particle size distribution._

5. TECHNICAL SPECIFICATIONS

Capacity Range: Configurable from 1 Ton Per Day (TPD) pilot models to 50 TPD production units.
Power Requirements: Electric motor driven; options from 15 HP to 75 HP depending on stamp count and capacity. Designed for standard industrial threephase power.
Material Specifications: Mortar Box & Liners: ASTM A532 Class III Type NiHard Iron or AR400 Steel Plate. Stamps: HighChrome Alloy Steel Castings. Frame & Camshaft: A36 Structural Steel / Forged 4140 Steel.
Physical Dimensions (Typical 10Stamp Mill): Operating Footprint approx. 4m L x 2m W x 3m H. Dry weight approx. 8,500 kg.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +50°C. Dust suppression via integrated water spray; enclosed drive components standard.

6. APPLICATION SCENARIOS

SmallScale Hard Rock Mine Expansion

Challenge:A West African operation using manual crushing and grinding struggled to increase throughput beyond 5 TPD while maintaining recovery above 85%. Labor costs were high and process control was inconsistent.
Solution:The mine installed two synchronized Certified Stamp Mills configured as their primary grinding circuit ahead of existing gravity tables.
Results:Achieved a stable throughput of18 TPD with recorded recovery rates improvingto8890%. Labor requirementsfor crushing/grinding were reduced by twothirds,and the predictable output allowedfor optimized cyanidation dosing.

Historic Tailings Reprocessing Plant

Challenge:A contractor reprocessing historic tailings needed a rugged grinder capable of handling highly abrasive,silicarich materialwith minimal finetuning.The mobile plant required quick setupand low foundation requirements.
Solution:A skidmounted Certified Stamp Millwith adjustable discharge grates was selected as the core processing unit.
Results:The unit was operational within48 hoursof arrival on site.Its abrasionresistant materials demonstrateda30% longerwear life comparedto previous equipment used.The abilityto quickly change screen sizes allowedthe contractor toefficiently processbatches of materialwith varying residual gold content.

7.COMMERCIAL CONSIDERATIONS

Pricing is structured around stamp countand customizations:
Base Unit Tier(5Stamp Pilot Plant):For testingand very smallscale production.Includes core mill,motor drive,and basic controls.
Production Unit Tier(1020 Stamp Standard Range):The most common configurationfor established operations.Includes enhanced features like automated lubrication systemsand advanced motor starters.Pricing is typically projectbasedwith optionsfor ancillary equipment packages(e.g.,feed conveyors,sump pumps).
Optional Features:
Variable Frequency Drive(VFD)for softstartand speed control
Advanced PLCbased monitoring(sump levels,temperature,vibration)
Custom wear package upgrades( e.g.,tungsten carbide stamp tips)
Skidmountingor containerizationfor mobility

Service Packages:
Commissioning& Operator Training
Annual Preventative Maintenance Inspections
Guaranteed Wear Parts Kitswith fixed annual pricing

Financing Options:
Equipment leasingand rentalpurchase agreementsare available through partnered financial institutions,tailoredto mining cash flow cycles.Typical terms range from24to60 months.

8.FAQ

Q:What feed size doesyour Certified Stamp Mill require?
A:The mill is designedfor optimal performancewith feed materialprecrushedto 2"(50mm).A primary jaw crusheris typically recommended upstream.

Q:Canyour mills be integratedinto an existing carboninpulp(CIP)or gravity circuit?
A Yes.The discharge slurry densityand flow rate are engineeredto be compatiblewith standard CIP tanksor centrifugal concentrator feed systems.Detailed P&ID drawingsare providedfor integration planning

Q:What isthe expected lead timefrom orderto commissioning?
A For standard production models,the current lead timeis1620 weeks.Custom configurationsmay require additional engineering time.Pilotscale units may have shorter availability

Q How does themill's noise level compareto other grinding solutions?
A The enclosed designand precision balancingresultin operational noise levelsapproximately1520% lowerthan unenclosed legacy stamp mills.Noise attenuation cowlingsare available as an option

Q What kindof operator trainingis provided?
A We includea comprehensive commissioning package conductedby our field engineers.This covers safe operation,routine maintenance procedures,and basic troubleshooting.Training manualsand video guidesare also supplied