1. PAINPOINT DRIVEN OPENING

Are you facing escalating operational costs and unpredictable throughput in your gold processing circuit? For plant managers and engineering contractors, the comminution stage—particularly with a Chinese stamp mill for gold mining—often presents critical bottlenecks. Common challenges include:

High Maintenance Downtime: Frequent wear part replacement on traditional stamp mills leads to unplanned shutdowns, directly reducing annual processing hours and revenue.
Inconsistent Grind Size: Variable feed material can cause uneven pulverization, compromising gold liberation and recovery rates in downstream cyanidation or gravity circuits.
Excessive Energy Consumption: Older, inefficient drive systems and heavy mechanical components result in disproportionately high power costs per ton of ore processed.
LaborIntensive Operation: Manual feeding and monitoring requirements increase labor costs and introduce potential for human error in process control.
Limited Scalability & Control: Basic mechanical designs offer little flexibility to optimize performance for varying ore hardness without significant mechanical adjustment.

How do you reduce total cost of ownership while ensuring consistent, reliable ore preparation? The solution lies in modernized, precisionengineered stamp mill technology designed for the demands of contemporary small to mediumscale gold mining operations.

2. PRODUCT OVERVIEW

This product line refers to modernized, heavyduty mechanical stamp mills engineered for the primary crushing and fine grinding of goldbearing quartz ores. Designed as a robust alternative or upgrade to historical models, these mills are built for continuous duty in hard rock mining applications.

Operational Workflow:
1. Controlled Feed: Runofmine (ROM) ore is fed via a regulated hopper and feeder system into the mortar box.
2. Precise Pulverization: A camshaft lifts cast iron or steel stamps (shoes) in a sequenced cycle, dropping them under gravity onto the ore bed within the mortar box.
3. Continuous Discharge: Finely crushed material passes through a perforated screen plate at the mortar box's end, allowing liberated gold particles to report to downstream recovery processes.
4. Slurry Handling: The discharged pulp is typically channeled to shaking tables, centrifugal concentrators, or directly to leaching tanks.

Application Scope & Limitations:
Ideal For: Smalltomedium scale hard rock (lode) gold mining operations; processing centers handling 10100 tons per day; regions with reliable access to mechanical power but limited grid infrastructure.
WellSuited For: Quartz vein material where gold is finely disseminated and requires thorough liberation.
Limitations: Not optimal for highclay or alluvial (placer) deposits; requires consistent ore sizing (<2 inches) for optimal operation; not a standalone solution, must be integrated into a full recovery circuit.

3. CORE FEATURES

Modular Frame Design | Technical Basis: Highstrength steel welded construction with preengineered bolton sections | Operational Benefit: Simplified transport to remote sites and faster onsite assembly, reducing installation time by up to 40% | ROI Impact: Lower capital expenditure on site preparation and craneage; quicker commissioning accelerates timetoproduction.

PrecisionMachined Camshaft Assembly | Technical Basis: CNCmachined alloy steel camshaft with inductionhardened lobes | Operational Benefit: Ensures uniform lift and drop timing for all stamps, creating consistent impact energy and grind size distribution | ROI Impact: Improved liberation yields higher overall recovery rates; reduced vibration extends bearing and frame life.

QuickChange Wear Plate System | Technical Basis: Interchangeable manganese steel liners for mortar box base and end screens | Operational Benefit: Operators can replace highwear components in under 2 hours without disassembling the main frame | ROI Impact: Minimizes downtime for maintenance; standardized parts inventory reduces operational costs.

Optimized Stamp Shoe Geometry | Technical Basis: Computermodeled weight distribution and impact face profile | Operational Benefit: Maximizes kinetic energy transfer to the ore bed while minimizing wasteful lateral force and component stress | ROI Impact: Higher throughput per unit of energy consumed (kWh/ton); extended shoe service life reduces consumable costs.

Centralized Grease Lubrication System | Technical Basis: Manifold with delivery lines to all major bearing points from a single access port | Operational Benefit: Enables safe, complete lubrication in minutes during scheduled stops, ensuring bearing protection | ROI Impact: Prevents catastrophic bearing failure, a leading cause of extended unplanned downtime in harsh environments.

Variable Speed Drive Option | Technical Basis: Integrated frequency controller for the main drive motor | Operational Benefit: Allows operators to finetamp stroke frequency (stamps per minute) in response to realtime ore hardness variability | ROI Impact: Maintains target grind size specification across varying feed stock, protecting downstream recovery efficiency.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Mills) | Our Chinese Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Availability (Uptime)| ~7580%, frequent unscheduled stops| Target >92% with planned maintenance| +15%+ operational availability |
| Energy Efficiency| High inertial load; fixed speed motor| Optimized kinetics; optional VSD| Up to 20% reduction in kWh/ton |
| Wear Part Lifetime| Mortar base liners replaced every 46 weeks| Quickchange manganese liners last 812 weeks| +50100% service life |
| Throughput Consistency| +/ 15% variance due to feed/ore changes| +/ 5% variance with controlled feed & VSD| ~67% improvement in process stability |
| Installation Time| Field welding/fitting requiring 1014 days| Modular boltup assembly in 57 days| ~50% faster deployment |

5. TECHNICAL SPECIFICATIONS

Model Range & Capacity: Available in 3stamp (1 TPH), 5stamp (2 TPH), and 10stamp (4 TPH) configurations. Capacities based on quartz ore of medium hardness (<12 kWh/t).
Power Requirements: Primary drive motor from 7.5 kW (3stamp) to 30 kW (10stamp). Standard 380V/50Hz/3Phase configuration. Options for diesel power takeoff (PTO) available.
Material Specifications: Main frame: ASTM A36 structural steel. Stamps & Shoes: Highchrome cast iron or forged steel. Wear Liners: ASTM A128 Manganese Steel (1114% Mn). Camshaft: AISI 4140 Alloy Steel.
Physical Dimensions (5Stamp Mill): Operating Footprint: ~3m L x 2m W x 2.8m H. Dry Weight: Approximately 4,800 kg.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +50°C. Dust seals standard on all bearings. Corrosionresistant primer and paint system included.

6. APPLICATION SCENARIOS

Regional Processing Center Upgrade

Challenge:
A West African processing center using three legacy stamp mills faced excessive downtime from weekly liner changes and erratic grind size affecting cyanide consumption.
Solution:
Replacement with two modernized Chinese stamp mills featuring quickchange wear plates and variable speed drives was implemented during a planned plant overhaul.
Results:
Mill availability increased from 76% to over 90%. Combined with more consistent P80 grind size, cyanide consumption was reduced by an average of 18%, leading to a payback period on equipment of under 14 months through reagent savings alone.

New Hard Rock Mine Development

Challenge:
An engineering contractor required a simpletoinstall yet reliable primary grinding solution for a new highgrade quartz vein project with limited initial infrastructure budget.
Solution:
A modular Chinese stamp mill was selected as the core comminution unit due its mechanical simplicity relative to ball mills,and lower installed power demand.The modular design facilitated air transportto the remote site .
Results:
The mill was assembledand commissioned within one weekof components arrivingon site .It consistently metthe designed throughputof 1 .8TPH , providing wellliberatedfeedtoa gravity flotation hybridcircuit .The project achievedfirstgold pourwithin its aggressiveproject timeline .

7.COMMERCIAL CONSIDERATIONS

Equipment pricing is tiered basedonstamp configurationandfeature level :
• Base Model(Standard Duty):Includescoreframe ,drive ,andstandardliners .
• Performance Model(Heavy Duty):Upgradedto manganese steelwearpartsacrosstheentiremortar box ,centralizedlubrication ,andheavierdutybearings .
• Premium Model(Full Control):Addsvariable speeddrive(VSD),automatedgreasesystem ,andextendedinstrumentationpackage .

Optional Features :
• Dieselengineormotor mountadaptorkits .
• Integratedfeedhopperswithvibratoryorfederbeltoptions .
• Sparepartskits( recommendedforfirst12monthsofoperation).

Service Packages :
• Commissioning&OperatorTraining:A twoweekonsiteservice .
• AnnualInspection&PreventiveMaintenanceContract .
• RemoteTechnicalSupportvia dedicatedchannel .

Financing :
Flexiblecommercialtermsareavailableforqualifiedbuyers ,includingdirectpurchase ,leasetoownagreements ,andprojectbasedfinancingthroughpartner institutions .

8.FAQ

Q:What isthetypicalleadtimefora Chinese stamp mill ?
A :Standardmodelsaretypicallyavailableforexpeditedshipmentwithin 8 10weeksfromorderconfirmation .Customconfigurationsmayrequire 12 14weeks .

Q:Canyourstampmillintegratewithourexistingorefeedsystem ?
A :Yes .Themillisdesignedwithastandardizedfeedhopperinterface .Our engineeringteamcanreviewyourcurrentlayouttoprovidespecificintegrationdrawingsandrecommendations .

Q:Whatistheexpectedservicelifeforthemainstructuralcomponents ?
A :Themainframeandcamshaftassemblyareengineeredforaminimumservice lifeof 15yearsundernormaloperatingconditions ,subjecttoproper maintenance .

Q:Doyouprovidegrindingtestservicesforspecificorematerial ?
A :Whilewedonotoperateatestplant ,weprovidedetailedtechnicaldatasheetsbasedonquartzoremilling .Forcomplexores ,we recommendpartneringwithametallurgicallabforbenchscaletestingto determineoptimalmillparameters .

Q:Whatisthewarrantystructure ?
A :We offera standard 12 monthwarrantyagainstdefectsinmaterialand workmanshipfromthedateofcommissioning .Extendedwarrantyoptions areavailablewithapreventivemaintenancecontract .

Q:Aretrainingmaterialsprovidedforouroperators ?
A :Yes .Comprehensiveoperationandsafety manualsareprovidedindigitalandhardcopyformat .Onsite trainingduringcommissioningisstronglyrecommendedandincludedinourservicepackages .

Q:Howsensitiveisthemilltofluctuationsinoresizeorhardness ?
A :Themillisrobusttominorfluctuations .For significantvariability( e.g., switchingbetweenoxidizedandsulphidematerial ),theoptionalvariablespeeddrive(VSD )isrecommendedtoallowoperatorsto adjuststrokefrequencytomaintaintargetgrind sizewithoutmechanicalchanges