1. PAINPOINT DRIVEN OPENING

Are you managing a gold mining operation where inconsistent ore grades and hard rock variability are compromising your recovery rates and profitability? Operational challenges with standard crushing and grinding circuits directly impact your bottom line. Consider these common pain points:

Low Recovery on Complex Ores: Standard ball mills can struggle to liberate fine gold from complex sulfide or telluride ores, leaving significant value in your tailings. This can represent a direct revenue loss of 1530% on marginal deposits.
High Energy Consumption: Traditional grinding is energyintensive, often accounting for over 50% of your site's power draw. Inefficient comminution directly increases your cost per ton.
Excessive Maintenance Downtime: The constant impact and abrasion in a grinding circuit lead to frequent liner changes, bearing failures, and unplanned stoppages, reducing plant availability.
Inflexibility to Feed Variation: A fixedspeed mill cannot optimally process both soft oxide material and hard quartzite without sacrificing throughput or grind size.

How do you increase gold liberation while controlling operational costs? Can your processing plant adapt to changing ore bodies without a complete overhaul? The solution lies in purposebuilt comminution technology designed for precious metal recovery.

2. PRODUCT OVERVIEW

A Bespoke Stamp Mill Gold Mining Processing Plant is a modern, engineered reinterpretation of the classic stamp mill principle, tailored for specific deposit characteristics. It is a modular crushing and grinding system designed for efficient gravityrecoverable gold liberation, particularly effective for freemilling ores.

Operational Workflow:
1. Primary Crushing: Runofmine ore is reduced to a consistent feed size (typically 2 inches) via a jaw or cone crusher.
2. Bespoke Stamp Milling: The precrushed ore is fed into the customconfigured stamp mill module. Hydraulically or mechanically driven stamps pulverize the ore via controlled impact onto an anvil.
3. Classification & Recirculation: Pulverized material passes over screens; oversize material is recirculated, while the correctly sized slurry reports to concentration.
4. Gravity Concentration: The liberated gold slurry is processed through downstream concentrators like centrifugal concentrators or shaking tables for immediate recovery.

Application Scope & Limitations:
Ideal For: Freemilling gold ores, alluvial deposits with hard rock components, smalltomedium scale operations (10500 TPD), and sites where cyanide avoidance is preferred.
Limitations: Less effective for refractory ores requiring fine grinding below 100 mesh for chemical leaching without secondary milling. Maximum throughput is constrained by the physical stamping mechanism compared to hightonnage SAG/ball mill circuits.

3. CORE FEATURES

Modular Mill Design | Technical Basis: Preengineered skidmounted modules | Operational Benefit: Reduces field installation time by up to 60%, minimizes civil works and onsite labor costs | ROI Impact: Faster commissioning accelerates revenue generation; capex predictability improves budget adherence.

Variable Impact Control | Technical Basis: Adjustable hydraulic pressure or camshaft geometry governing stamp weight/drop frequency | Operational Benefit: Operators can finetune impact energy to match ore hardness in realtime, optimizing liberation | ROI Impact: Maximizes recovery across variable ore zones; prevents energy waste on softer material.

CorrosionAbrasion Resistant Liners | Technical Basis: Highchrome white iron or composite ceramic liners for mortars and shoes | Operational Benefit: Extends wear life of critical components exposed to continuous impact by 35x over standard manganese steel | ROI Impact: Lowers costperton for consumables; reduces frequency of downtime events for liner replacement.

Integrated Screening Loop | Technical Basis: Highfrequency vibrating screen integrated into the mill discharge design | Operational Benefit: Ensures precise control of product size; automatically recirculates oversize material for further crushing | ROI Impact: Creates a consistent feed for gravity circuits, improving overall recovery efficiency by ensuring optimal grind size.

Centralized Lube & Monitoring System | Technical Basis: Automated grease points with flow sensors and vibration analysis ports on bearing housings | Operational Benefit: Enables conditionbased maintenance, providing early warning of misalignment or component fatigue | ROI Impact: Prevents catastrophic bearing failures; transforms maintenance from reactive to scheduled, boosting plant availability.

Dust Suppression Integration | Technical Basis: Sealed milling chamber with negative pressure and optional water spray nozzles at feed points | Operational Benefit: Contains silica dust and particulate matter at source, improving site safety and environmental compliance | ROI Impact Mitigates regulatory risk and reduces costs associated with airborne health monitoring.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Small Ball Mill) | Bespoke Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Specific Energy Consumption (kWh/t) | 12 18 kWh/t (for similar grind) | 8 12 kWh/t (targeted impact) Up to ~33% Reduction |
| Gold Liberation Efficiency (FreeMilling Ore)| ~8590% (200 mesh) Up to ~9598% (+58 p.p.) |
| Wear Part Cost ($/ton processed) High (grinding media & liner wear) Moderate (liner wear only) Up to ~40% Reduction |
| Plant Footprint (m² per 100 TPD) ModerateLarge Compact Modular Design Up to ~25% Smaller |
| Noise Emission at 10m (dB(A)) >95 dB(A) <88 dB(A) Significant Reduction |

_Field data from comparable installations shows improved liberation due to preferential fracture along mineral grain boundaries._
_With acoustic damping enclosure._

5. TECHNICAL SPECIFICATIONS

Capacity Range: Configurable from 10 to over 300 Tons Per Day (TPD).
Power Requirements: Dependent on configuration. A standard 100 TPD module typically requires a 150200 kW power supply.
Material Specifications:
Frame & Structure: Heavyduty carbon steel (ASTM A36).
Wear Surfaces / Stamps / Mortars: HighChrome Alloy Iron (2732% Cr) or AR400/500 Steel.
Shoe Replacements Tungsten Carbide Tips available.
Physical Dimensions (Typical 100 TPD Module): L x W x H ≈ 8m x 4m x 5m. Skidmounted weight approx. ~22,000 kg.
Environmental Operating Range Ambient Temperature 20°C to +45°C. Humidity up to95%, noncondensing.Dust suppression system required in arid environments

6 APPLICATION SCENARIOS

MidScale Vein Mining Operation West Africa Challenge A mine transitioning from soft oxide oreto harder fresh sulphide zone experienced plummeting recovery rates in their existing hammer millgravity circuit due insufficient gold liberation Solution Installation ofa bespoke stampmillplant asaprimary grinder configuredfor highimpact energyonhard rock The modular design allowed tieinintoexisting conveyingandconcentration infrastructure Results Achieved consistentgrindof80%100meshfromvariablefeed Liberatedgoldrecoveryimprovedfrom~70%to93%withinafourweekrampup period

Artisanal & SmallScale Mining Formalization South America Challenge Acooperative aimingtoformalizeoperationsrequiredan efficient portable processing solution that minimized environmentalimpactandcyanideuse while maximizingrecoverablegoldfromquartzveins Solution Deploymentofaturnkey50TPDbespokestampmillplantwithintegratedwaterrecirculationandgravitationalconcentrationmodules Results Theplantachieved~96%recoveryoffreegold eliminatedmercuryuse entirelyandprovidedauditableproductiondataforregulatorycompliance Paybackperiodwasachievedinunder14months

7 COMMERCIAL CONSIDERATIONS

Equipment pricing fortailored stampmillplants scaleswithcapacityandcomplexity
Base Plant Tier(50100TPDstandardconfiguration): Providescorecrushing millingandscreening
Enhanced Plant Tier(100300TPD): Includesadvancedautomation controlsystemsintegrateddustsuppressionandoptionalpreconcentrationjig
Optional featuresincludeacousticenclosures remoteperformancemonitoringkitsandsparepartspackages
Service packages typicallyoffered:
Commissioning&OperatorTraining
AnnualInspection&PreventiveMaintenancePlans
PriorityResponseSupportAgreements
Financing options throughpartner institutionscanincludeleasingstructuresorprojectfinancingforqualifiedbuyersensuringcapitalpreservation

8 FAQ

What feed size doesa bespoke stampmill require?
Optimalfeedisminus2inches(50mm)achievedviaaprimaryjawcrusher Consistentfeedsizemaximizesstampefficiencyandwearlife

Can thissystembeintegratedwithanexistingCILorflotationcircuit?
Yes Itcan serveasaprimaryorsecondarygrindingunitprovidingwellliberatedfeedforleachingorfurtherflotationCircuitdesignreviewisrecommended

How doesoperationalnoisecomparetoaballmill?
Industrytestingdemonstratesproperlyhousedstampmillmodulesoperateatdecibellevelssignificantlybelowtypicalballmillcircuitsenhancingsiteworkingconditions

Whatisthetypicalleadtimeforacustomizedplant?
Leadtimesvaryfrom20weeksforstandardmodulesto30+weeksforhighlycustomizedturnkeyplantsdependingonspecifications

Are spare parts readily available?
CriticalwearpartsarestockedagainstglobalISOcodesandsupplyagreementsensureavailabilityMajorstructuralcomponentshaveleadtimesspecifiedatorder

What trainingisprovidedforyouroperators?
Comprehensive training coverssafeoperation routine maintenance troubleshootingandsizemodulation Documentationincludesmanuals P&IDsandparts lists