1. ABERTURA ACIONADA POR PAINPOINT

Are you facing escalating operational costs and unpredictable throughput in your gold processing circuit? Para gerentes de fábrica e empreiteiros de engenharia, the comminution stage—particularly with a Chinese stamp mill for gold mining—often presents critical bottlenecks. Os desafios comuns incluem:

Alto tempo de inatividade para manutenção: Frequent wear part replacement on traditional stamp mills leads to unplanned shutdowns, directly reducing annual processing hours and revenue.
Tamanho de moagem inconsistente: Variable feed material can cause uneven pulverization, compromising gold liberation and recovery rates in downstream cyanidation or gravity circuits.
Consumo excessivo de energia: Mais velho, inefficient drive systems and heavy mechanical components result in disproportionately high power costs per ton of ore processed.
Operação Intensiva em Mão de Obra: Manual feeding and monitoring requirements increase labor costs and introduce potential for human error in process control.
Escalabilidade Limitada & Controlar: 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. VISÃO GERAL DO PRODUTO

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.

Fluxo de Trabalho Operacional:
1. Alimentação controlada: 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 (sapato) in a sequenced cycle, dropping them under gravity onto the ore bed within the mortar box.
3. Descarga Contínua: 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. Manuseio de Polpa: The discharged pulp is typically channeled to shaking tables, concentradores centrífugos, or directly to leaching tanks.

Escopo de aplicação & Limitações:
Ideal para: Smalltomedium scale hard rock (veio) gold mining operations; processing centers handling 10100 toneladas por dia; regions with reliable access to mechanical power but limited grid infrastructure.
Adequado para: Quartz vein material where gold is finely disseminated and requires thorough liberation.
Limitações: Not optimal for highclay or alluvial (colocador) depósitos; requires consistent ore sizing (<2 polegadas) para operação ideal; not a standalone solution, must be integrated into a full recovery circuit.

3. RECURSOS PRINCIPAIS

Design de moldura modular | Base Técnica: Highstrength steel welded construction with preengineered bolton sections | Benefício Operacional: Simplified transport to remote sites and faster onsite assembly, reducing installation time by up to 40% | Impacto do ROI: Lower capital expenditure on site preparation and craneage; quicker commissioning accelerates timetoproduction.

PrecisionMachined Camshaft Assembly | Base Técnica: CNCmachined alloy steel camshaft with inductionhardened lobes | Benefício Operacional: Garante tempo uniforme de levantamento e queda para todos os selos, creating consistent impact energy and grind size distribution | Impacto do ROI: Improved liberation yields higher overall recovery rates; reduced vibration extends bearing and frame life.

QuickChange Wear Plate System | Base Técnica: Interchangeable manganese steel liners for mortar box base and end screens | Benefício Operacional: Operators can replace highwear components in under 2 hours without disassembling the main frame | Impacto do ROI: Minimizes downtime for maintenance; standardized parts inventory reduces operational costs.

Optimized Stamp Shoe Geometry | Base Técnica: Computermodeled weight distribution and impact face profile | Benefício Operacional: Maximizes kinetic energy transfer to the ore bed while minimizing wasteful lateral force and component stress | Impacto do ROI: Higher throughput per unit of energy consumed (kWh/tonelada); extended shoe service life reduces consumable costs.

Sistema centralizado de lubrificação com graxa | Base Técnica: Manifold with delivery lines to all major bearing points from a single access port | Benefício Operacional: Permite segurança, complete lubrication in minutes during scheduled stops, garantindo a proteção do rolamento | Impacto do ROI: Evita falhas catastróficas nos rolamentos, a leading cause of extended unplanned downtime in harsh environments.

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

4. VANTAGENS COMPETITIVAS

| Métrica de desempenho | Padrão da Indústria (Moinhos Legados) | Our Chinese Stamp Mill Solution | Vantagem (% Melhoria) |
| : | : | : | : |
| Disponibilidade (Tempo de atividade)| ~7580%, frequent unscheduled stops| Alvo >92% com manutenção planejada| +15%+ disponibilidade operacional |
| Eficiência Energética| High inertial load; fixed speed motor| Optimized kinetics; optional VSD| Até 20% redução em kWh/ton |
| Vida útil da peça de desgaste| Mortar base liners replaced every 46 semanas| Quickchange manganese liners last 812 semanas| +50100% vida útil |
| Consistência de rendimento| +/ 15% variance due to feed/ore changes| +/ 5% variance with controlled feed & DSV| ~67% improvement in process stability |
| Tempo de instalação| Field welding/fitting requiring 1014 dias| Modular boltup assembly in 57 dias| Implantação cerca de 50% mais rápida |

5. ESPECIFICAÇÕES TÉCNICAS

Gama de modelos & Capacidade: Disponível em 3stamp (1 TPH), 5carimbo (2 TPH), e 10 carimbos (4 TPH) configurações. Capacities based on quartz ore of medium hardness (<12 kWh/t).
Requisitos de energia: Primary drive motor from 7.5 kW (3carimbo) para 30 kW (10carimbo). Standard 380V/50Hz/3Phase configuration. Options for diesel power takeoff (Tomada de força) disponível.
Especificações de materiais: Quadro principal: ASTM A36 structural steel. Selos & Sapato: Highchrome cast iron or forged steel. Revestimentos de desgaste: Aço manganês ASTM A128 (1114% Mn). Árvore de cames: AISI 4140 Alloy Steel.
Dimensões Físicas (5Moinho de carimbos): Operating Footprint: ~3m L x 2m W x 2.8m H. Peso Seco: Aproximadamente 4,800 kg.
Faixa operacional ambiental: Projetado para temperaturas ambientes de 20°C a +50°C. Dust seals standard on all bearings. Corrosionresistant primer and paint system included.

6. CENÁRIOS DE APLICAÇÃO

Regional Processing Center Upgrade

Desafio:
A West African processing center using three legacy stamp mills faced excessive downtime from weekly liner changes and erratic grind size affecting cyanide consumption.
Solução:
Replacement with two modernized Chinese stamp mills featuring quickchange wear plates and variable speed drives was implemented during a planned plant overhaul.
Resultados:
Mill availability increased from 76% acabar 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

Desafio:
An engineering contractor required a simpletoinstall yet reliable primary grinding solution for a new highgrade quartz vein project with limited initial infrastructure budget.
Solução:
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 .
Resultados:
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.CONSIDERAÇÕES COMERCIAIS

Equipment pricing is tiered basedonstamp configurationandfeature level :
• Base Model(Dever Padrão):Includescoreframe ,dirigir ,andstandardliners .
• Performance Model(Serviço Pesado):Upgradedto manganese steelwearpartsacrosstheentiremortar box ,centralizedlubrication ,andheavierdutybearings .
• Premium Model(Full Control):Addsvariable speeddrive(DSV),automatedgreasesystem ,andextendedinstrumentationpackage .

Recursos opcionais :
• Dieselengineormotor mountadaptorkits .
• Integratedfeedhopperswithvibratoryorfederbeltoptions .
• Sparepartskits( recommendedforfirst12monthsofoperation).

Pacotes de serviços :
• Comissionamento&Treinamento de Operadores:A twoweekonsiteservice .
• AnnualInspection&PreventiveMaintenanceContract .
• RemoteTechnicalSupportvia dedicatedchannel .

Financiamento :
Flexiblecommercialtermsareavailableforqualifiedbuyers ,includingdirectpurchase ,leasetoownagreements ,andprojectbasedfinancingthroughpartner institutions .

8.Perguntas frequentes

P:What isthetypicalleadtimefora Chinese stamp mill ?
UM :Standardmodelsaretypicallyavailableforexpeditedshipmentwithin 8 10weeksfromorderconfirmation .Customconfigurationsmayrequire 12 14semanas .

P:Canyourstampmillintegratewithourexistingorefeedsystem ?
UM :Yes .Themillisdesignedwithastandardizedfeedhopperinterface .Our engineeringteamcanreviewyourcurrentlayouttoprovidespecificintegrationdrawingsandrecommendations .

P:Whatistheexpectedservicelifeforthemainstructuralcomponents ?
UM :Themainframeandcamshaftassemblyareengineeredforaminimumservice lifeof 15yearsundernormaloperatingconditions ,subjecttoproper maintenance .

P:Doyouprovidegrindingtestservicesforspecificorematerial ?
UM :Whilewedonotoperateatestplant ,weprovidedetailedtechnicaldatasheetsbasedonquartzoremilling .Forcomplexores ,we recommendpartneringwithametallurgicallabforbenchscaletestingto determineoptimalmillparameters .

P:Qual é a estrutura da garantia ?
UM :We offera standard 12 monthwarrantyagainstdefectsinmaterialand workmanshipfromthedateofcommissioning .Extendedwarrantyoptions areavailablewithapreventivemaintenancecontract .

P:Aretrainingmaterialsprovidedforouroperators ?
UM :Yes .Comprehensiveoperationandsafety manualsareprovidedindigitalandhardcopyformat .Onsite trainingduringcommissioningisstronglyrecommendedandincludedinourservicepackages .

P:Howsensitiveisthemilltofluctuationsinoresizeorhardness ?
UM :Themillisrobusttominorfluctuations .For significantvariability( por exemplo, switchingbetweenoxidizedandsulphidematerial ),theoptionalvariablespeeddrive(DSV )isrecommendedtoallowoperatorsto adjuststrokefrequencytomaintaintargetgrind sizewithoutmechanicalchanges