1. PAINPOINT DRIVEN OPENING

Are you managing a gold processing operation where throughput and recovery rates are under constant pressure? The limitations of traditional crushing and grinding methods directly impact your bottom line. Consider these common operational challenges:

Low Throughput & High Downtime: Manual feeding, inconsistent ore sizing, and frequent maintenance stops on primary crushers create bottlenecks, limiting tonsperhour capacity and increasing labor costs.
Inefficient Gold Liberation: Inadequate initial particle size reduction forces your grinding circuit to work harder, consuming excessive energy and still risking poor liberation of gold from host rock.
High Operational Costs: Reliance on multiple pieces of equipment for primary crushing, secondary breaking, and feeding results in elevated power consumption, spare parts inventories, and operator overhead.
Scalability Limitations: Fixed, nonmodular systems hinder your ability to efficiently adjust processing capacity in response to changing ore grades or mine plans.

Is there a reliable, heavyduty solution that can serve as the robust first step in your comminution circuit, consistently delivering optimally sized feed to improve overall plant performance?

2. PRODUCT OVERVIEW: HeavyDuty Stamp Mill for Primary Gold Ore Crushing

Our heavyduty stamp mill is engineered as the foundational primary crushing unit for hard rock gold mining operations. It is designed to accept runofmine (ROM) ore and reduce it to a consistent, manageable size suitable for secondary processing in ball mills or hammer mills.

Operational Workflow:
1. Loading: ROM ore is fed into the integrated feed hopper, designed to manage large, irregular rocks with minimal bridging.
2. Crushing: Mechanically driven heavy stamps (camshaft or leveroperated) are lifted and dropped onto the ore bed contained within a durable mortar box.
3. Sizing & Discharge: Crushed material passes through a grated screen at the base of the mortar box. Oversize material remains for further crushing cycles, while correctly sized material discharges for conveyance to the next stage.
4. System Integration: The unit functions as the primary node in a circuit, with discharge ideally conveyed to a sorting area or directly into secondary grinding.

Application Scope & Limitations:
Ideal For: Processing quartz veins, hard rock lode deposits, and sulfide ores where gold is locked within the matrix. Suited for both stationary plant installations and largerscale artisanal operations.
Limitations: Not designed as a finegrinding solution. Efficiency decreases with overly clayrich or wet feed material without prior screening. Requires a stable foundation due to dynamic loads.

3. CORE FEATURES

Modular Frame Design | Technical Basis: Fabricated hightensile steel Ibeam construction with bolted sections | Operational Benefit: Enables transport to remote sites and allows for future reconfiguration or expansion of the crushing battery | ROI Impact: Reduces installation time by up to 40% versus weldedinplace units and protects longterm asset flexibility.

Hardened Alloy Stamp Shoes & Mortar Liners | Technical Basis: Airhardened manganese steel or proprietary chromium carbide alloys | Operational Benefit: Provides exceptional wear resistance against abrasive quartz material, extending component life between replacements | ROI Impact: Field data shows a 6080% improvement in wear life over standard cast iron parts, directly lowering cost per ton for consumables.

PrecisionCut Camshaft & HeavyDuty Bearings | Technical Basis: Forged steel camshaft with inductionhardened lobes mounted on oversized roller bearings | Operational Benefit: Ensures consistent stamp lift height and drop force with minimal vibration transfer to the frame | ROI Impact: Maximizes energy transfer to the rock crush zone and reduces unscheduled bearing failure downtime by an average of 35%.

Adjustable Discharge Grate System | Technical Basis: Interchangeable grate plates with varying aperture sizes (typically 1/2" to 2") | Operational Benefit: Allows operators to control final product size based on ore characteristics and downstream mill requirements | ROI Impact: Optimizes overall circuit efficiency; achieving correct primary crush size can improve downstream grinding mill throughput by 1525%.

Centralized Grease Lubrication System | Technical Basis: Manifold with lines feeding all major bearing points from a single station | Operational Benefit: Enables safe, rapid routine maintenance without disassembly, ensuring critical points are never missed | ROI Impact: Standardizes preventive maintenance (PM) procedures, reduces lubrication time by 70%, and extends component service life.

Integrated Dust Suppression Manifold | Technical Basis: Preplumbed water line ports around the mortar box for nozzle attachment | Operational Benefit: Significantly reduces silica dust generation at the point of impact, improving site air quality and operator safety | ROI Impact: Mitigates health compliance risks and reduces cleanup labor costs associated with dust accumulation.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Basic Stamp Mill) | Our HeavyDuty Stamp Mill Solution | Advantage (% Improvement) |
| : | : | : | : |
| Uptime Availability| ~80%, frequent stops for lubrication/ adjustment| >92%, via centralized lube & robust bearing design| +15% operational time |
| Wear Part Life (Shoes)| 500 800 operating hours| 1,200 1,500 operating hours| +60% minimum |
| Tons per Hour (TPH)| Variable; often limited by feed design| Consistent throughput via optimized hopper geometry & cam profile| +2030% throughput stability |
| Energy Efficiency (kWh/ton)| Higher due to friction losses & vibration| Lower via direct drive alignment & efficient kinetic transfer| 18% average power consumption per ton crushed |
| Installation / Relocation Time| Weeks for foundation setting/assembly| Days due to modular bolttogether design| 65% site commissioning time |

5. TECHNICAL SPECIFICATIONS

Model Range Capacity: 110 Tons Per Hour (TPH), depending on ore hardness and target discharge size.
Power Requirements: Configured for electric motor or diesel drive options.
Electric Motor Drive: 3075 HP (2256 kW), 3phase.
Diesel Drive Option: Direct coupling to industrial diesel engines.
Material Specifications:
Frame Construction: ASTM A36 Structural Steel.
Wear Components (Shoes/Liners): Manganese Steel (1114% Mn) or Chromium Carbide Overlay Plate.
Camshaft & Lifters: Forged AISI 4140 Steel, heattreated.
Physical Dimensions (Typical 5 TPH Unit):
Footprint (L x W): Approximately 4m x 2.5m.
Height: ~3m including hopper.
Approximate Weight: 8,500 kg.
Environmental Operating Range: Designed for operation in ambient temperatures from 20°C to +50°C. All bearings feature sealed housings rated IP65 for dust and moisture protection.

6. APPLICATION SCENARIOS

MediumScale Lode Mine Expansion

Challenge:
A West African gold operation expanding its plant capacity was constrained by its manual jaw crusher setup,
which caused erratic feed to the new ball mill circuit,
leading to constant operator intervention
and suboptimal grinding performance.

Solution:
Implementation of two parallel heavyduty stamp mills as dedicated primary crushers,
configured with a specific discharge grate size
to produce ideal ball mill feed.

Results:
Primary crushing throughput stabilized at
5 TPH per unit,
providing consistent,
optimally sized feed
to the new grinding circuit,
which achieved its target recovery rate within two weeks of commissioning,
and overall plant throughput increased by
40%.

Cooperative Artisanal Mining Sector Upgrade

Challenge:
A South American mining cooperative using individual,
smallscale hammer mills faced high equipment failure rates
and poor recovery due
to inefficient initial particle size reduction from large ROM ore.

Solution:
Centralized processing center installation featuring
a heavyduty stamp mill as
the shared primary crushing hub,
feeding multiple secondary grinding lines.

Results:
The cooperative reported a
60%
reduction in hammer mill wear part costs due
to betterprepared feed,
a collective increase in gold yield estimated at
20%
due
to improved liberation,
and enhanced working conditions from reduced dust
and noise at individual worksites.

7. COMMERCIAL CONSIDERATIONS

Our stamp mills are offered in three primary tiers based on capacity scale:

1.
Standard Duty Units
(13 TPH):
Ideal for pilot plants or lowervolume operations;
includes core features like alloy liners
and modular frame;
base pricing structure available

2
HeavyDuty Production Units
(38 TPH):
Full feature set as described above;
includes centralized lube
and dust suppression manifold;
most common configuration

3
Custom HighCapacity Battery Systems
(8+ TPH):
Multiplestamp configurations on single frame;
custom engineered drives
and discharge systems;
priced per project specification

Optional Features:
VFD motor controls for speed adjustment,
onboard belt conveyor systems for discharge handling,
advanced vibration monitoring sensors,
spare parts starter kits

Service Packages:
Choose from Basic Warranty (
12 months parts),
Extended Service Plans (
up t o36 months),
or Onsite Training &
Commissioning Support packages

Financing Options:
Commercial leasing structures are available through partners,
enabling Capex preservation;
also eligible f ortradein programs f orexisting comminution equipment

8.FAQ

Q:What is t hemaximum input rock size your stamp mill can accept?
A:The feed hopper is designed t oaccommodate ROM ore with amaximum dimension of approximately350mm (
14 inches).
Consistent feeding of oversize material beyond this will reduce efficiency

Q:C anyour stamp mill beintegrated wit hexisting jaw crusher orb allmill circuits?
A Yes effectively It often serves as adirect replacement f oraprimary jaw crusher ordirect feeder t oasecondary ballmill Our engineering team canreview your flow sheet t oensure compatibility an dspecify t hecorrect discharge grate sizeforyour downstream process

Q:What are t hecritical daily maintenance requirements?
A Daily checks involve visual inspection offasteners wear components an dthe centralized greasing system which requires operation once pershift Weekly inspections should focus oncamshaft lifter wear an dgrate integrity Adetailed PM checklist is provided

Q How does operating astamp mill impact overall site power consumption comparedt oalternative primary crushers?
A While apowerful unit our design focuses onefficient kinetic transfer Industry testing demonstrates thatforhard rock goldore it offers acomparable ort ot allylower kWh/ton rating than many jaw crusher configurations when considering t hefull circuit benefitofoptimized feedsizeforgrinding mills

Q What is t hetypical lead time f oraheavy duty production unit?
A F orstandard models inthe3–8TPH range lead times aretypically12–16weeks fromorder confirmation todelivery port Custom configurations may require additional engineering time