1. PAINPOINT DRIVEN OPENING

Managing a modern gold processing operation requires balancing throughput, recovery rates, and stringent environmental responsibilities. Traditional comminution and concentration methods often fall short, creating significant operational hurdles. Are you facing these challenges?

High Operational Costs & Downtime: Conventional stamp mills and crushers are maintenanceintensive, with frequent liner changes and mechanical failures leading to unplanned stoppages. Each hour of downtime directly impacts your bottom line.
Inefficient Gold Liberation & Recovery: Older milling technology may not achieve optimal particle size, leaving valuable gold locked within host rock and reducing overall plant recovery rates.
Excessive Water Consumption & Tailings Management: Waterintensive processes create large volumes of slurry tailings, escalating water sourcing costs and increasing the complexity and liability of tailings dam management.
Regulatory & Community Pressure: Noise, dust, and chemical runoff from traditional operations can lead to permitting delays, community opposition, and difficulty meeting modern environmental, social, and governance (ESG) standards.
Energy Intensity: Inefficient grinding mechanisms consume excessive power per ton of ore processed, making energy one of your largest variable costs.

If these issues affect your profitability and operational license, an engineered ecofriendly stamp mill solution warrants serious consideration.

2. PRODUCT OVERVIEW

Our EcoFriendly Modular Stamp Mill Plant is a reengineered gravity concentration system designed for primary and secondary crushing of goldbearing quartz ore. It integrates modern materials science and process control to deliver efficient gold liberation with a minimized environmental footprint.

Operational Workflow:
1. Controlled Feed: Sized ore is conveyed into an integrated feed hopper with a regulated gate for consistent flow.
2. Impact Liberation: Heavyduty, tungstencarbidetipped stamps drop in a controlled sequence onto ore beds within sealed mortar boxes, fracturing rock along grain boundaries.
3. WaterEfficient Slurry Formation: A closedcircuit water system introduces minimal moisture to create a transportable slurry within the mill.
4. Integrated Concentration: Liberated heavy gold particles are immediately captured via integrated shaking tables or centrifugal concentrators within the same modular unit.
5. Dry Stack Tailings Option: Processed tailings can be directed toward a filter press system (optional), significantly reducing water content for safer, more stable drystack storage.

Application Scope & Limitations:
Ideal For: Hard rock (lode) gold deposits, particularly freemilling ores; small to mediumscale operations (5200 TPD); regions with water scarcity or strict environmental regulations; sites seeking modular, movable plants.
Limitations: Not suitable for highclay or deeply weathered oxide ores that cause packing; less effective for refractory ores requiring chemical treatment; maximum feed size is typically limited to 2 inches.

3. CORE FEATURES

Sealed Mortar Box System | Technical Basis: Enclosed vibratory crushing chamber with rubberized seals | Operational Benefit: Contains dust and noise pollution by over 70% compared to open designs | ROI Impact: Reduces site emissions for easier permitting and improves worker health/safety compliance

Tungsten Carbide Composite Stamps | Technical Basis: Highdensity, wearresistant tip metallurgy bonded to forged steel shafts | Operational Benefit: Increases wear life by 35x over traditional manganese steel stamps | ROI Impact: Lowers consumable parts cost and reduces frequency of maintenance shutdowns

ClosedLoop Water Management | Technical Basis: Integrated sump pump and settling tank system for process water recirculation | Operational Benefit: Cuts fresh water consumption by up to 80% | ROI Impact: Drastically reduces water procurement costs and minimizes effluent volume

Hybrid Mechanical Drive System | Technical Basis: Highefficiency electric motors coupled with regenerative braking on the camshaft | Operational Benefit: Reduces peak power draw by approximately 25% through energy recovery | ROI Impact: Lowers direct operating costs (kWh/ton) and allows use of smaller generators in remote settings

Modular PreConcentration Stage | Technical Basis: Inline vibrating screen or jig before final milling stage | Operational Benefit: Removes barren gangue material early in the process ("preconcentration") | ROI Impact: Increases effective mill capacity by up to 30% for waste rejection, focusing energy on valuable material

Smart Vibration Monitoring | Technical Basis: IoTenabled accelerometers on bearing housings and frame | Operational Benefit: Provides realtime data on stamp alignment and mechanical health for predictive maintenance | ROI Impact Prevents catastrophic failures, allowing scheduled maintenance during planned outages

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Traditional Stamp Mill) | EcoFriendly Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Water Consumption (liters/ton) | 500 1000 L/ton (open circuit) | 100 200 L/ton (closed circuit) | Reduction of 80% |
| Wear Part Lifetime (Stamps) | ~500800 operating hours | ~20003500 operating hours| Increase of ~300% |
| Specific Energy Consumption (kWh/ton)| ~8 12 kWh/ton| ~6 9 kWh/ton| Reduction of ~25% |
| Noise Emission at 10m (dB(A))| >95 dB(A)| 10 dB(A) |
| Fine Gold Recovery (<100 mesh)| Reliant on secondary circuit only| Enhanced via integrated concentration table| Capture improvement estimated at 1520% |

5. TECHNICAL SPECIFICATIONS

Model Range Capacity: EFM10 / EFM25 / EFM50 / EFM100
Throughput Rating: From 10 to 100 Tons Per Day (TPD), depending on ore hardness & feed size.
Power Requirements: Plant drive motors from 30 kW to 150 kW; total connected load includes auxiliaries (conveyors, pumps). Standard supply: 400V/50Hz or 480V/60Hz.
Material Specifications: Highabrasion steel mill frame; Sealed mortar boxes lined with replaceable NiHard alloy plates; Tungsten carbide composite stamp tips; FDAgrade rubber sealing components.
Physical Dimensions (EFM50 Example): Modular footprint approx. 12m L x 4m W x 5m H. Designed for containerized shipping & rapid field assembly.
Environmental Operating Range: Ambient temperature: 10°C to +45°C; Humidity up to 95% noncondensing; Elevation up to 3000m ASL with motor derating.

6. APPLICATION SCENARIOS

Artisanal & SmallScale Mining Formalization Project

Challenge A governmentled initiative needed to consolidate informal mining activities into a regulated zone but faced opposition due to historical mercury use and river siltation from traditional milling.
Solution Implementation of six EFM25 units in a centralized processing hub with a shared closedloop water system and dry stack tailings facility.
Results The project achieved a 95% reduction in riverine discharge complaints from downstream communities while increasing average gold recovery from 65% to over 82%, providing higher incomes for operators within the legal framework.

MidTier Producer in Arid Region

Challenge A producing mine in a waterscarce region was facing escalating costs from trucking in process water while needing to debottleneck their primary crushing circuit ahead of their CIP plant.
Solution Installation of two EFM100 units as secondary crushers configured for coarse liberation (~2mm), feeding directly into the existing ball mill circuit with an integrated preconcentration jig.
Results The solution reduced fresh water demand by over 75%, saving an estimated $250k annually in water logistics while increasing overall plant throughput by 18%. The preconcentration jig recovered coarse free gold previously lost in cyclones.

7. COMMERCIAL CONSIDERATIONS

Our ecofriendly stamp mill solutions are offered under flexible commercial terms designed for capital project planning:

Equipment Pricing Tiers:
Base Unit Price includes core stamp mill module with drive system,
sealed mortar boxes,
and basic controls
Plant Package Price includes base unit plus integrated concentration module,
feed conveyor,
and starter motor control center
Turnkey Package Price includes full plant design,
civil works support,
installation supervision,
and operator training

Optional Features:
Hybrid solar/diesel power integration package;
Advanced PLC automation suite with HMI;
Dry stack tailings filter press module;
Remote performance monitoring via satellite link.

Service Packages:
Comprehensive multiyear warranty;
Planned maintenance contracts with guaranteed parts availability;
Ondemand technical support via video diagnostics;
Annual efficiency audit services.

Financing Options:
We work with international export credit agencies
and equipment financing partners
to offer leasetoown structures
or projectbased financing solutions over terms ranging from 24 60 months.

8 FAQ

Q1 How does this ecofriendly stamp mill integrate into my existing cyanidation or flotation plant?
A1 It functions as an efficient primary or secondary crushing unit designed for coarse liberation Field data shows it can effectively reduce feed size ahead of fine grinding circuits improving overall energy efficiency Integration points are standard at conveyor discharge or feed hoppers

Q2 What is the expected impact on my operational staffing requirements?
A2 The design emphasizes reliability
and ease of maintenance requiring fewer unplanned interventions Your existing mill operators can manage it Predictive monitoring tools shift labor from reactive repairs towards planned oversight potentially optimizing crew deployment

Q3 Are spare parts readily available given the specialized components like tungsten carbide stamps?
A3 Yes We maintain strategic global inventory hubs Critical wear parts like composite stamps are standardized across our model range ensuring availability We also provide recommended onsite spares kits as part of commissioning

Q4 Can you quantify the potential return on investment ROI ?
A4 While sitespecific key drivers include A 20 30 reduction in energy per crushed ton B 60 80 savings in process water costs C increased throughput from preconcentration D lower longterm tailings management liabilities A detailed payback analysis based on your tonnage is part of our proposal process

Q5 What are the main installation requirements?
A5 Requirements include A level prepared concrete pad B connection points for power C access to minimal makeup water source D simple runoff containment berms Our modular design minimizes civil works needs typically allowing commissioning within 2 4 weeks after delivery