1. OUVERTURE ENTRAÎNÉE PAR POINT DE DOULEUR

Are you facing escalating operational costs and unpredictable throughput in your gold processing circuit? Pour les directeurs d’usine et les entrepreneurs en ingénierie, the comminution stage—particularly with a Chinese stamp mill for gold mining—often presents critical bottlenecks. Les défis courants incluent:

Temps d'arrêt pour maintenance élevé: Frequent wear part replacement on traditional stamp mills leads to unplanned shutdowns, directly reducing annual processing hours and revenue.
Taille de mouture incohérente: Variable feed material can cause uneven pulverization, compromising gold liberation and recovery rates in downstream cyanidation or gravity circuits.
Consommation d'énergie excessive: Plus vieux, inefficient drive systems and heavy mechanical components result in disproportionately high power costs per ton of ore processed.
Opération à forte intensité de main d'œuvre: Manual feeding and monitoring requirements increase labor costs and introduce potential for human error in process control.
Évolutivité limitée & Contrôle: 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? La solution réside dans la modernisation, precisionengineered stamp mill technology designed for the demands of contemporary small to mediumscale gold mining operations.

2. APERÇU DU PRODUIT

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.

Flux de travail opérationnel:
1. Alimentation contrôlée: 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 (chaussures) in a sequenced cycle, dropping them under gravity onto the ore bed within the mortar box.
3. Décharge continue: 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. Manipulation des boues: The discharged pulp is typically channeled to shaking tables, concentrateurs centrifuges, or directly to leaching tanks.

Champ d'application & Limites:
Idéal pour: Smalltomedium scale hard rock (filon) gold mining operations; processing centers handling 10100 tonnes par jour; regions with reliable access to mechanical power but limited grid infrastructure.
Bien adapté pour: Quartz vein material where gold is finely disseminated and requires thorough liberation.
Limites: Not optimal for highclay or alluvial (placer) dépôts; requires consistent ore sizing (<2 pouces) pour un fonctionnement optimal; not a standalone solution, must be integrated into a full recovery circuit.

3. CARACTÉRISTIQUES PRINCIPALES

Conception de cadre modulaire | Base technique: Highstrength steel welded construction with preengineered bolton sections | Avantage opérationnel: Simplified transport to remote sites and faster onsite assembly, réduisant le temps d'installation jusqu'à 40% | Impact sur le retour sur investissement: Lower capital expenditure on site preparation and craneage; quicker commissioning accelerates timetoproduction.

PrecisionMachined Camshaft Assembly | Base technique: CNCmachined alloy steel camshaft with inductionhardened lobes | Avantage opérationnel: Ensures uniform lift and drop timing for all stamps, creating consistent impact energy and grind size distribution | Impact sur le retour sur investissement: Improved liberation yields higher overall recovery rates; reduced vibration extends bearing and frame life.

QuickChange Wear Plate System | Base technique: Interchangeable manganese steel liners for mortar box base and end screens | Avantage opérationnel: Operators can replace highwear components in under 2 heures sans démonter le châssis principal | Impact sur le retour sur investissement: Minimise les temps d’arrêt pour la maintenance; standardized parts inventory reduces operational costs.

Optimized Stamp Shoe Geometry | Base technique: Computermodeled weight distribution and impact face profile | Avantage opérationnel: Maximizes kinetic energy transfer to the ore bed while minimizing wasteful lateral force and component stress | Impact sur le retour sur investissement: Higher throughput per unit of energy consumed (kWh/tonne); extended shoe service life reduces consumable costs.

Système de lubrification centralisé à la graisse | Base technique: Manifold with delivery lines to all major bearing points from a single access port | Avantage opérationnel: Permet de sécuriser, complete lubrication in minutes during scheduled stops, assurer la protection des roulements | Impact sur le retour sur investissement: Empêche les défaillances catastrophiques des roulements, a leading cause of extended unplanned downtime in harsh environments.

Variable Speed Drive Option | Base technique: Integrated frequency controller for the main drive motor | Avantage opérationnel: Allows operators to finetamp stroke frequency (stamps per minute) in response to realtime ore hardness variability | Impact sur le retour sur investissement: Maintains target grind size specification across varying feed stock, protecting downstream recovery efficiency.

4. AVANTAGES CONCURRENTIELS

| Mesure de performances | Norme de l'industrie (Moulins hérités) | Notre solution de moulin à timbres chinois | Avantage (% Amélioration) |
| : | : | : | : |
| Disponibilité (Temps de disponibilité)| ~7580%, frequent unscheduled stops| Cible >92% avec maintenance planifiée| +15%+ disponibilité opérationnelle |
| Efficacité énergétique| High inertial load; fixed speed motor| Optimized kinetics; optional VSD| Jusqu'à 20% réduction en kWh/tonne |
| Durée de vie des pièces d'usure| Mortar base liners replaced every 46 semaines| Quickchange manganese liners last 812 semaines| +50100% durée de vie |
| Cohérence du débit| +/ 15% variance due to feed/ore changes| +/ 5% variance with controlled feed & VSD| ~67% improvement in process stability |
| Temps d'installation| Field welding/fitting requiring 1014 jours| Modular boltup assembly in 57 jours| Déploiement ~50 % plus rapide |

5. SPÉCIFICATIONS TECHNIQUES

Gamme de modèles & Capacité: Disponible en 3 timbres (1 TPH), 5timbre (2 TPH), et 10 timbres (4 TPH) configurations. Capacities based on quartz ore of medium hardness (<12 kWh/t).
Exigences d'alimentation: Primary drive motor from 7.5 kW (3timbre) à 30 kW (10timbre). Standard 380V/50Hz/3Phase configuration. Options for diesel power takeoff (PDF) disponible.
Spécifications matérielles: Cadre principal: Acier de construction ASTM A36. Timbres & Chaussures: Highchrome cast iron or forged steel. Porter des doublures: Acier au manganèse ASTM A128 (1114% Mn). Arbre à cames: AISI 4140 Alloy Steel.
Dimensions physiques (5Moulin à timbres): Operating Footprint: ~3m L x 2m W x 2.8m H. Dry Weight: Environ 4,800 kilos.
Plage de fonctionnement environnementale: Conçu pour des températures ambiantes de 20°C à +50°C. Dust seals standard on all bearings. Corrosionresistant primer and paint system included.

6. SCÉNARIOS D'APPLICATION

Regional Processing Center Upgrade

Défi:
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.
Résultats:
Mill availability increased from 76% à plus 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

Défi:
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 .
Résultats:
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.CONSIDÉRATIONS COMMERCIALES

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

Fonctionnalités facultatives :
• Dieselengineormotor mountadaptorkits .
• Integratedfeedhopperswithvibratoryorfederbeltoptions .
• Sparepartskits( recommendedforfirst12monthsofoperation).

Forfaits de services :
• Mise en service&Formation des opérateurs:A twoweekonsiteservice .
• AnnualInspection&PreventiveMaintenanceContract .
• RemoteTechnicalSupportvia dedicatedchannel .

Financement :
Flexiblecommercialtermsareavailableforqualifiedbuyers ,includingdirectpurchase ,leasetoownagreements ,andprojectbasedfinancingthroughpartner institutions .

8.FAQ

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

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

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

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

Q:Quelle est la structure de la garantie ?
UN :We offera standard 12 monthwarrantyagainstdefectsinmaterialand workmanshipfromthedateofcommissioning .Extendedwarrantyoptions areavailablewithapreventivemaintenancecontract .

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

Q:Howsensitiveisthemilltofluctuationsinoresizeorhardness ?
UN :Themillisrobusttominorfluctuations .For significantvariability( par ex., switchingbetweenoxidizedandsulphidematerial ),theoptionalvariablespeeddrive(VSD )isrecommendedtoallowoperatorsto adjuststrokefrequencytomaintaintargetgrind sizewithoutmechanicalchanges