1. PAINPOINT DRIVEN OPENING

Are you managing a gold processing operation where inconsistent ore feed, excessive downtime for liner changes, and rising energy costs are eroding your profit margins? Each hour your primary grinding circuit is offline for maintenance represents a direct loss in throughput and revenue. The challenge of achieving consistent, fine liberation of goldbearing minerals without incurring prohibitive operational expenses is a constant pressure.

Consider these common operational hurdles:
High Maintenance Downtime: Frequent shutdowns to replace worn stamp mill shoes, dies, and liners disrupt continuous processing schedules.
Inefficient Energy Use: Older or poorly calibrated stamp mills consume disproportionate power per ton of ore crushed, directly impacting operating costs.
Inconsistent Product Size: Variable feed size or wear on components leads to unevenly crushed material, compromising downstream recovery in cyanidation or gravity circuits.
High Labor & Safety Costs: Manual monitoring and mechanical adjustments increase labor overhead and potential safety exposure around heavy moving parts.
Scalability Limitations: Inflexible designs struggle to adapt to varying ore hardness or increased plant capacity targets.

What if your primary crushing stage could deliver more reliable performance with predictable maintenance intervals and lower cost per ton? The solution lies in modernized, precisionengineered stamp mill technology.

2. PRODUCT OVERVIEW

The ODM Stamp Mill is a modern reinterpretation of the proven camandlever crushing principle, engineered for reliable primary crushing of goldbearing quartz ores. It is designed as a robust, lowspeed impact crusher where mechanically lifted heavy stamps (hammers) are dropped onto ore fed into a mortar box, fracturing the material through repeated impact.

Operational Workflow:
1. Feed Introduction: Runofmine (ROM) ore is consistently fed into the stamp mill’s mortar box via a regulated feeder.
2. Cyclic Crushing: The rotating camshaft lifts multiple cast iron or steel stamps in sequence, releasing them to fall under gravity onto the ore.
3. Particle Reduction: Ore is fractured by direct impact and grinding between the stamp shoe and the die (mortar box base).
4. Slurry Discharge: Crushed material exits through a screen grate at the front of the mortar box, mixed with water to form a slurry for transport to secondary processing.

Application Scope & Limitations:
Ideal For: Freemilling gold ores where coarse gold liberation is required; smalltomedium scale operations (1100 TPD); regions with stable but limited power availability; operations prioritizing mechanical simplicity and durability.
Limitations: Not suitable for wet, sticky clay ores that cause packing; less energyefficient than some modern ball mills for fine grinding; requires firm foundation due to dynamic loads.

3. CORE FEATURES

Modular Mortar Box Assembly | Technical Basis: Bolttogether highchrome iron segments | Operational Benefit: Replace individual worn segments in under 4 hours versus fullbox replacement | ROI Impact: Reduces liner change downtime by 65% and inventory cost by only stocking segments.

Precision Camshaft & Tappet Design | Technical Basis: CADoptimized lift profile and hardened steel tappets | Operational Benefit: Ensures even lift and clean drop of all stamps for balanced load distribution | ROI Impact: Extends camshaft service life by over 40% and reduces vibrationinduced foundation stress.

Automated Lubrication System | Technical Basis: Centralized grease manifold targeting all major bearings | Operational Benefit: Eliminates manual greasing points, ensuring optimal bearing life and reducing safety risks | ROI Impact: Lowers bearing failure rates by an estimated 30% and associated unplanned stoppages.

Adjustable Discharge Grate | Technical Basis: Quickrelease screen grate with multiple aperture options | Operational Benefit: Allows operators to adjust product size without stopping the mill | ROI Impact: Enables rapid adaptation to changing ore characteristics, maximizing downstream recovery efficiency.

HeavyDuty Frame Construction | Technical Basis: Fabricated steel frame with reinforced crossbracing | Operational Benefit: Absorbs dynamic loads for longterm alignment stability in remote installations | ROI Impact: Minimizes foundational repair costs and ensures consistent operation over a 15+ year lifespan.

Water Injection Manifold | Technical Basis: Controlled water ports integrated into the mortar box | Operational Benefit: Optimizes slurry density and flow, preventing dust and ensuring efficient material transport | ROI Impact: Improves overall circuit stability and reduces water consumption through precise control.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Legacy Stamp Mills) | ODM Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Liner Change Time (Full Set) | 1624 hours manual labor & welding required. ~8 hours with modular design. >60% faster turnaround |
| Energy Efficiency (kWh/ton) ~56 kWh/ton for 10mm product. ~4.24.8 kWh/ton via optimized kinetics. Up to 20% lower energy cost |
| Mean Time Between Failure (Camshaft) ~1218 months under full load ~2430 months with hardened tappets ~5067% longer service life |
| Product Size Consistency High variability due to wear & manual feed Automated feed control + adjustable grate Up to 35% more consistent P80 |

5. TECHNICAL SPECIFICATIONS

Model Range & Capacity: ODMSM5 (5stamp, ~13 TPH), ODMSM10 (10stamp, ~38 TPH), ODMSM20 (20stamp, ~815 TPH). Capacities based on quartz ore of medium hardness.
Power Requirements: Driven by an electric motor via Vbelt transmission. Power range from 15 kW (SM5) to 75 kW (SM20). Standard supply 400V/50Hz or 480V/60Hz; other configurations available.
Material Specifications: Mortar Box Liners: HighChrome Cast Iron (27% Cr). Stamps & Shoes: Manganese Steel or HighCarbon Steel options. Frame & Structure: ASTM A36 Carbon Steel.
Physical Dimensions (ODMSM10 Example): Footprint approx.: Length=4.2m x Width=2m x Height=3m . Total Weight approx.: 12 tonnes .
Environmental Operating Range: Designed for ambient temperatures from 20°C to +45°C . Requires drydust or waterspray dust suppression systems in enclosed buildings .

6. APPLICATION SCENARIOS

SmallScale Gold Producer in West Africa

Challenge A producer using manual crushers faced low throughput (2 TPH overall Gold recovery improved by approximately due more consistent grind Labor reallocated from crushing concentration tasks

Artisanal & SmallScale Mining Cooperative South America

Challenge Cooperative sought formalize upgrade operations from traditional arrastras improve environmental control mercury use
Solution Implementation integrated circuit featuring ODMSM10 mill controlled water addition discharge slurry jig concentrator
Results Achieved predictable daily production enabling better planning Reduced uncontrolled mercury use through improved liberation Provided safer mechanized process members

7 COMMERCIAL CONSIDERATIONS

Equipment pricing structured around model capacity core configuration Options include diesel drive packages advanced slurry sumps automated feed conveyor systems

Three tiered service packages available:
1 Basic Package Includes commissioning spare parts list operator training
2 Premium Package Adds annual inspection remote technical support priority parts dispatch
3 Comprehensive Care Package Covers scheduled maintenance parts kits excluding consumables like shoes liners

Financing options can be arranged through partner institutions including leaseto own structures milestonebased payment plans supporting project cash flow

8 FAQ

What feed size can your stamp mill accept?
Designed optimally handle ROM ore up mm diameter Larger boulders require primary jaw crushing ensure efficient operation prevent blockages

How does it integrate existing sluice shaking table circuit?
The mill discharges slurry directly laundered flume box can be split distributed multiple gravity devices Water flow must managed maintain optimal density transport

What typical wear part consumption rate?
Depends heavily abrasiveness Based field data quartz expect replace shoes dies every months continuous operation modular liners every months Consumption rates guaranteed specific ore testing

Do you offer turnkey installation supervision?
Yes provide detailed foundation drawings supervise local contractors during erection commissioning ensure mechanical electrical alignment meets design specifications Additional fees apply

What lead time delivery key spares?
Standard model delivery within weeks exworks Express spares service available critical components like camshafts tappets can expedited days subject availability