1. PAINPOINT DRIVEN OPENING

Are you managing gold recovery operations burdened by inconsistent throughput, excessive maintenance costs, and unpredictable downtime? Legacy crushing and grinding equipment often fails to meet the demands of modern, highvolume ore processing. Consider these common challenges:
Unplanned Downtime: Frequent breakdowns of cast components or drive systems halt your entire milling circuit, costing thousands per hour in lost production.
High Operational Costs: Excessive energy consumption per ton of ore processed and the constant need for replacement parts erode your profit margins.
Inconsistent Grind & Recovery: Variable feed size and worn mechanisms lead to an uneven pulp product, compromising downstream cyanidation or gravity recovery efficiency.
LaborIntensive Operation: Equipment requiring constant manual adjustment and monitoring diverts skilled personnel from other critical plant tasks.
Rapid Wear in Abrasive Environments: Quartz and hard rock ore prematurely degrade mill components, leading to frequent shutdowns for rebuilds or replacements.

How do you achieve reliable, costeffective comminution that delivers a consistent product for optimal gold liberation? The solution lies in specifying OEM factoryengineered stamp mill technology built for endurance and controlled performance.

2. PRODUCT OVERVIEW

This product line comprises heavyduty, modernized stamp mills engineered for primary and secondary crushing of goldbearing ores. Designed as a robust mechanical crusher, it transforms runofmine (ROM) ore into finely milled pulp suitable for subsequent extraction processes.

Operational Workflow:
1. Feed: ROM ore is fed into a sealed mortar box atop a heavyduty steel frame.
2. Crushing & Grinding: A series of mechanically lifted stamps (weighted rods with mallets) are sequentially dropped onto the ore, pulverizing it through repeated impact.
3. Pulp Discharge: Finely crushed material is washed through a perforated screen at the mortar box's base with a controlled water flow, creating a slurry for further processing.

Application Scope & Limitations:
Ideal For: Mediumscale operations processing freemilling gold ores, particularly where simplicity, durability, and ease of maintenance are priorities. Effective for both vein material and alluvial concentrates.
Limitations: Not suitable for ultrafine grinding required for refractory ores. Requires a consistent feed size (typically <2 inches) for optimal operation. Physical footprint and foundation requirements must be accounted for in plant design.

3. CORE FEATURES

Forged Alloy Stamps | Technical Basis: Highcarbon steel forging with heat treatment | Operational Benefit: Exceptional resistance to deformation and abrasion compared to standard cast iron | ROI Impact: Reduces replacement frequency by up to 40%, lowering part inventory costs and labor hours.

Precision Camshaft & Lifter Design | Technical Basis: CADoptimized cam profile and hardened steel lifters | Operational Benefit: Ensures synchronized, efficient stamp liftanddrop with minimal slippage and vibration | ROI Impact: Improves energy transfer efficiency by an estimated 15%, reducing kWh per ton processed.

Modular Mortar Box Liners | Technical Basis: Interchangeable manganese steel wear plates | Operational Benefit: Allows for targeted replacement of worn sections without dismantling the entire mortar box | ROI Impact: Cuts liner replacement downtime by 60% and reduces consumable costs by focusing spend only on worn components.

Centralized Grease Lubrication System | Technical Basis: Automated manifold delivering grease to all major bearings | Operational Benefit: Eliminates manual greasing points, ensuring consistent lubrication and preventing bearing seizure | ROI Impact: Extends bearing service life significantly, preventing costly unscheduled stoppages.

HeavyDuty Timber Frame Construction | Technical Basis: Engineered hardwood beams with steel reinforcement | Operational Benefit: Absorbs operational shock loads while providing longterm structural stability with minimal metal fatigue | ROI Impact: Delieves decades of service life; field data shows frames outlasting equipment itself with proper maintenance.

Adjustable Screen & Discharge Tray | Technical Basis: Quickrelease clamp system for screen mesh and adjustable slurry tray angle | Operational Benefit: Enables operators to finetune pulp density and particle size in under 30 minutes to match changing ore characteristics | ROI Impact: Optimizes feed for downstream processes, improving overall recovery rates.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy/Refurbished Mills) | Our OEM Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Availability (Uptime)| ~85%, frequent unscheduled stops for repairs| >94%, supported by durable components & modular design| ~10% increase in productive hours |
| Tons Processed per kWh| Variable; often inefficient due to wear & poor kinematics| Consistent rating; optimized mechanics reduce energy waste| Field data shows 1218% improvement |
| Mean Time Between Failure (Critical Parts)| 612 months for stamps & liners under heavy load| 1824 months under equivalent conditions| 50100% longer service life |
| Annual Maintenance Labor Hours| High; requires frequent manual adjustments & greasing| Reduced; centralized lube & modular parts cut handson time| Estimated 30% reduction |

5. TECHNICAL SPECIFICATIONS

Model Range Capacity: 15 tons per hour (per stamp), configurable in 3stamp, 5stamp, or 10stamp batteries.
Power Requirements: Electric motor drive recommended. Range from 15 kW (3stamp) to 75 kW (10stamp battery). Can be configured for diesel power in remote locations.
Material Specifications:
Stamps: Forged HighCarbon Steel (AISI/SAE 1045+).
Mortar Box Liners: Manganese Steel (1114% Mn).
Camshaft & Lifters: CaseHardened Alloy Steel.
Main Frame: StressGraded Hardwood (e.g., Jarrah) & Structural Steel Reinforcements.
Physical Dimensions (5Stamp Mill): Approximately 4m L x 2.5m W x 3m H. Foundation requirements detailed in installation manual.
Environmental Operating Range: Designed for operation in temperatures from 10°C to +45°C. Enclosed lubrication system protects against high dust environments.

6. APPLICATION SCENARIOS

MidScale Hard Rock Mine, West Africa | Challenge: A mine using aging hammer mills faced excessive downtime due to wear part failure and high energy costs from an undersized generator.| Solution: Implementation of two parallel 5stamp mills with optimized drive motors.| Results: Achieved consistent 8 TPH throughput with fewer mechanical issues. Generator fuel consumption dropped by 20%, contributing to a payback period on the new equipment of under 22 months.

Gravity Concentration Plant, South America | Challenge: Inconsistent grind size from improvised crushing circuits led to significant gold losses in coarse tailings from shaking tables.| Solution: Integration of a single 3stamp mill as a dedicated recrusher for table concentrates.| Results:Particle size distribution became tightly controlled. Subsequent gold recovery via concentration improved by approximately 15%, capturing previously lost values.

7. COMMERCIAL CONSIDERATIONS

Our stamp mills are offered in three primary tiers:
1. Standard Duty: For lowerabrasion ores and <16hr/day operation. Includes core features with standard motor drives.
2. Heavy Duty: For quartzrich/hard rock ores and continuous (24/7) operation features upgraded material specs on all wear parts and premium bearing assemblies.
3.
4.Modular Plant Unit: A complete skidmounted solution including feed hopper, conveyor, stamp mill,and slurry sump,priced as a turnkey processing module

Optional features include automated feed systems,dust suppression shrouds,and remote monitoring sensorsfor vibrationand temperature

Service packages range from basic commissioningand operator trainingto comprehensive annual inspectionand partskit programs.Financing options including leasingand milestonebased payment plansare availablefor qualified buyers

8.FAQ

Q:What is the typical lead timefor deliveryofa customconfiguredstampmill?
A Lead timesvaryby modeland specification Standard configurationsshipwithin14weeksof order confirmation while fully customized unitsrequire1822weeks

Q:Canyourstampmillsbe integratedwithourexistingballmillor concentrationcircuit?
A Yes The dischargepulp densityand particlesize can beadjusted tomatchthefeed requirements formostdownstreamprocesses Our engineeringteamcan reviewyourflowsheetto ensurecompatibility

Q:Whatistheexpectedlifespanofthemainframe?
A Withproperinstallationandprotectionfromthe elements theengineered timberandsteelframehasaservicelife exceeding30years Instancesof framesinstalledover50yearsagoremaininoperation

Q:Doyouprovidewearsupartsonaconsignmentor guaranteedinventorybasis?
A We offertailoredinventorymanagement agreementsForclients thisensurescriticalspareslike stampsandlinersare heldinstockfor immediate dispatchminimizingyourdowntimerisk

Q:Whattrainingisprovidedforouroperatorsandmaintenancestaff?
A Comprehensive trainingis part ofthe commissioningprocess Thisincludes8hoursof handsonoperationtrainingandspecificinstructiononpreventivemaintenanceproceduresandsafetyprotocolsManualsare providedindigitalandhardcopyformat