1. PAINPOINT DRIVEN OPENING

Are your gold recovery operations constrained by inefficient primary grinding? Inconsistent feed size, excessive liner wear, and unplanned maintenance on your comminution equipment directly impact your bottom line. Consider these common challenges in gold ore processing:
High Operational Cost: Frequent replacement of grinding media and mill liners due to abrasive ore results in significant consumable expenses and production halts.
Inconsistent Grind Size: Variable feed material leads to fluctuating particle size output from your primary mill, reducing downstream cyanidation or gravity recovery efficiency.
Excessive Downtime: Traditional mill designs require lengthy, laborintensive shutdowns for liner changes and maintenance, costing valuable production time.
Energy Inefficiency: Older milling technology may consume excessive power per ton of ore processed, making energy one of your largest uncontrollable costs.
Scalability Limitations: Rigid mill configurations struggle to adapt to changing ore body characteristics or increased throughput targets without major capital investment.

Is your operation seeking a robust, reliable primary grinding solution engineered to reduce cost per ton and maximize gold liberation?

2. PRODUCT OVERVIEW

The China Stamp Mill for gold mining is a modernized, heavyduty mechanized crushing and grinding apparatus designed for the primary comminution of goldbearing quartz rock and ores. It functions as a core piece of mineral processing equipment, applying repetitive percussive force to reduce runofmine (ROM) ore to a consistent, liberatable size for subsequent concentration processes.

Operational Workflow:
1. Feed Introduction: ROM ore (typically sized below 100mm) is continuously fed into a centralized feed hopper.
2. Percussive Grinding: A series of mechanically lifted heavy stamps (weights) are released in a controlled cycle, dropping onto the ore bed contained within a durable mortar box.
3. Particle Size Reduction: The repeated impact fractures the ore along natural grain boundaries, efficiently liberating gold particles without excessive overgrinding.
4. Slurry Discharge: Ground material is washed through a discharge screen with water, creating a slurry of target particle size that reports to downstream shaking tables, centrifugal concentrators, or leaching circuits.

Application Scope & Limitations:
Scope: Ideal for freemilling gold ores where gravity recovery is viable; effective for smalltomedium scale operations (5500 TPD); suitable for remote sites due to robust mechanical design.
Limitations: Less efficient on clayrich or highly weathered ores that cause packing; not a finegrinding solution—typically produces product in the 20100 mesh range; requires consistent water supply for slurry handling.

3. CORE FEATURES

Modular Stamp Assembly | Technical Basis: Individually mounted stamp heads with replaceable shoes | Operational Benefit: Isolated wear components allow for singlestamp maintenance without full mill shutdown | ROI Impact: Reduces planned downtime by up to 60% compared to full liner replacement cycles

Controlled Drop Height Mechanism | Technical Basis: Adjustable camshaft or hydraulic lift system regulates stamp lift | Operational Benefit: Operators can finetune impact energy based on ore hardness and feed size | ROI Impact: Optimizes energy consumption and minimizes unnecessary wear, lowering cost per ton

AbrasionResistant Composite Mortar Box | Technical Basis: Highchrome cast iron or composite alloy lining sections | Operational Benefit: Provides extended service life under continuous abrasive impact | ROI Impact: Field data shows a 4050% improvement in liner life versus standard manganese steel

Integrated WaterFlush System | Technical Basis: Strategically placed nozzles provide continuous slurry mobility | Operational Benefit: Prevents screen blinding and ensures consistent throughput of ground material | ROI Impact: Maintains target throughput rates and reduces manual cleaning interventions

Centralized Grease Lubrication System | Technical Basis: Automated manifold delivers grease to all major bearing points | Operational Benefit: Ensures critical moving parts are protected from silica dust ingress | ROI Impact: Extends bearing service life by over 200%, preventing catastrophic drive system failures

Simplified Mechanical Drive Train | Technical Basis: Direct gear or belt drive from electric motor to camshaft | Operational Benefit: Offers high mechanical efficiency (>92%) and ease of troubleshooting for onsite crews | ROI Impact: Reduces electrical costs and simplifies maintenance vs. complex variablefrequency hydraulic systems

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Basic Ball Mill/Jaw Crusher Combo) | China Stamp Mill Solution | Advantage (% Improvement) |
|||||
| Grinding Media Wear Rate | High Constant ball/liner replacement | Low Focused wear on replaceable stamp shoes >50% reduction in consumable cost |
| Energy Efficiency (kWh/t) | Highly variable based on feed & grind size Consistent due to controlled impact mechanism 1525% more efficient on suitable ores |
| Mean Time Between Maintenance (MTBM) 3045 days for liner checks 90120 days for scheduled inspections ~150% increase in operational availability |
| Particle Size Consistency (65 mesh %) Fluctuates with feed homogeneity More uniform due to screening at discharge Improves downstream recovery by 58% |
| Operator Skill Requirement High for optimization & troubleshooting Lower mechanical system with visual indicators Reduces training overhead & operational risk |

5. TECHNICAL SPECIFICATIONS

Capacity / Throughput Range: Configurable models from 5 Tonnes Per Day (TPD) to 500 TPD.
Power Requirements: Dependent on model; typical range from 22 kW (for 10stamp unit) to 110 kW (for largecapacity units). Operates on standard industrial 380V/50Hz/3Phase or customizable voltage.
Material Specifications:
Stamp Heads & Shoes: Forged Steel with tungsten carbide inserts (optional).
Mortar Box Liner: HighChrome Cast Iron (27% Cr).
Frame & Structure: Heavyduty carbon steel plate (Q235B/SS400).
Physical Dimensions (Example Model CSM200): Footprint approx. 6m (L) x 4m (W) x 5m (H). Weight approx. ~18 tonnes.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +45°C. Dust suppression via waterflush system integral to operation.

6. APPLICATION SCENARIOS

Alluvial/Vein Gold Processing Plant Challenge:

A West African operation processing hard rock quartz veins faced high energy costs and rapid wear from their small ball mill circuit. Downstream gravity recovery was inefficient due to poor and inconsistent primary grind.

Solution:

Implementation of two parallel CSM300 China Stamp Mills as the primary grinding stage ahead of existing shaking tables.

Results:

Achieved a target grind of 80%65 mesh consistently. Gravity recovery rate improved from ~55% to over 70%. Combined energy and media savings reduced processing cost by an estimated $18/tonne.

Secondary Grinding Circuit Feed Preparation Challenge:

A South American mine using a cyanidation plant required finer feed but their primary jaw crusher produced too many coarse slabs causing bottlenecks in the secondary roller mill.

Solution:

Installation of a single China Stamp Mill as an intermediate crushing/grinding stage between the jaw crusher and the roller mill.

Results:

The stamp mill effectively broke down coarse slabs into granular feed ideal for the roller mill. This balanced the load across the circuit, increasing overall plant throughput by approximately 22%.

7. COMMERCIAL CONSIDERATIONS

Our China Stamp Mills are offered in three primary tiers:

1. Standard Tier: Includes core mill with mechanical drive, composite liners, basic control panel. Ideal for operations with existing plant infrastructure.
2. Enhanced Tier: Adds automated lubrication system, adjustable dropheight mechanism, spare parts kit, and upgraded wear packages.
3. Turnkey Tier: Comprehensive package including feed hopper, slurry sump pump installation drawings commissioning supervision training

Optional features include advanced dust covers different screen mesh sizes custom alloy wear parts remote monitoring sensors

We offer comprehensive service packages from annual inspections full OEM spare parts support Onsite technical training is included with Enhanced Turnkey tiers Financing options including leasing are available through partners subject credit approval

8.FAQ

Q What is the typical particle size output from China Stamp Mill?
A The product size is primarily controlled by the discharge screen aperture Most models produce a product where >80 passes between 20 mesh mm 100 mesh mm ideal gravity concentration direct cyanidation finer feeds

Q Can this equipment process wet or clayey material
A Performance is optimized free milling hard rock ores Clay rich sticky ores can cause packing within mortar box reducing efficiency A simple pre screening washing stage recommended such materials

Q How does noise level compare other grinding equipment
A The percussive action generates noise Proper installation includes basic acoustic enclosures foundation damping Industry testing demonstrates sound levels meet international standards enclosed operating areas hearing protection always advised personnel

Q What are lead times delivery
A Standard model lead times typically weeks months depending complexity order Custom configurations require additional engineering time FOB shipping terms apply detailed logistics planning provided

Q Is technical documentation support available
A Yes All units supplied come complete detailed mechanical electrical drawings parts manuals lists Installation commissioning guides provided English local languages upon request