1. PAINPOINT DRIVEN OPENING

Are you managing gold recovery operations where inconsistent feed grade, abrasive materials, and tight water constraints are eroding your profit margins? Operational data from midtier mines indicates that inefficient primary concentration can lead to direct gold losses of 815%, representing a significant revenue leak. Furthermore, equipment not engineered for highsilica content suffers from accelerated wear, increasing component replacement costs and unplanned downtime. Are you currently facing challenges with achieving high recovery rates in both alluvial and hard rock applications without excessive water consumption or complex chemical processes? The need for a robust, efficient, and reliable primary concentration solution is critical for protecting your bottom line.

2. PRODUCT OVERVIEW

The Centrifugal Gold Concentrator is a gravity separation device designed for the continuous recovery of free gold, particularly fine gold that is often lost in traditional sluicebased systems. Its operational workflow is based on enhanced gravitational forces within a rotating drum.

Key Operational Steps:
1. Feed Introduction: A slurry of ore and water is introduced into the rotating cone.
2. Concentration: Centrifugal force pushes material against the wall. Heavier gold particles embed into the collection grooves or riffles, while lighter gangue material is fluidized and flushed out.
3. Continuous Discharge: Tailings are continuously discharged from the top of the unit.
4. Concentrate Removal: After a scheduled cycle, rotation stops, and the concentrated goldbearing material is rinsed into a collection bucket for further processing or direct smelting.

Application Scope: Effective on particle sizes typically from 6mm down to ultrafine (<10 micron) gold in alluvial (placer) and milled hard rock circuits. Serves as a primary concentrator or a scavenger unit.
Limitations: Performance is dependent on proper liberation of gold particles. Not effective on chemically bound or locked gold without prior milling. Requires consistent feed density and flow rate for optimal operation.

3. CORE FEATURES

HighG Force Bowl Design | Technical Basis: Precisionmachined, wearresistant polymer cone with deep, angled grooves | Operational Benefit: Generates stable centrifugal fields exceeding 200 G's, capturing fine gold particles that bypass static systems | ROI Impact: Field data shows a 2040% increase in fine gold recovery compared to shaking tables in comparable circuits.
Variable Frequency Drive (VFD) Control | Technical Basis: Electronically controlled motor drive system | Operational Benefit: Operators can precisely adjust rotational speed to match feed grade and particle size distribution in realtime for optimal recovery | ROI Impact: Maximizes yield across varying ore types; reduces process waste.
Automated Discharge Sequence | Technical Basis: Programmable Logic Controller (PLC) with timed wash cycles | Operational Benefit: Eliminates manual shutdown and cleaning, allowing for continuous unattended operation over 1224 hour cycles | ROI Impact: Reduces labor costs by approximately 23 operator hours per shift and increases machine uptime.
AbrasionResistant Liner System | Technical Basis: Interchangeable liners made from polyurethane or ceramic composite | Operational Benefit: Withstands highly abrasive siliceous ores, significantly extending service life in harsh environments | ROI Impact: Lowers total cost of ownership; liner replacement intervals extended by 300400% compared to standard rubber components.
Low Water Consumption Circuit | Technical Basis: Recirculating water system with lowflow spray bars | Operational Benefit: Operates efficiently with only 815 gallons per minute (GPM), minimizing freshwater intake requirements | ROI Impact: Critical for remote operations; reduces water procurement and pumping costs by up to 60% versus highvolume sluices.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Vibrating Sluice/Shaking Table) | Centrifugal Gold Concentrator Solution | Advantage (% Improvement) |
| : | : | : | : |
| Fine Gold Recovery Rate (<100 mesh) | 5570% | 8592% (with optimized feed) | +25% avg. |
| Water Consumption (per ton processed) | High (50100 GPM typical) | Low (815 GPM recirculated) | 75% avg. |
| Required Operator Attention (per shift) | Constant monitoring & adjustment (~2 hrs) Scheduled manual cleanups (~1 hr) Primarily automated; concentrate cleanup only (~0.5 hrs) |75% avg.| 75% avg.
| Footprint per Unit Capacity (sq ft per TPH)| Larger footprint required for equivalent capacity Compact design due to vertical orientation |40% avg.| 40% avg.

5. TECHNICAL SPECIFICATIONS

Model Reference: GC1500
Processing Capacity: Up to 15 tons per hour (TPH), depending on feed density and particle size distribution.
Power Requirements: 7.5 kW electric motor (400V/50Hz or 480V/60Hz), VFD controlled.
Material Specifications: Primary structure: Carbon steel with corrosionresistant coating. Bowl liner options: Highdensity polyurethane (standard), Ceramicfaced composite (optional). Fluidization channels: Stainless steel.
Physical Dimensions: Operating diameter: 1.5m; Height: 1.8m; Dry weight: ~650 kg.
Environmental Operating Range: Ambient temperature: 10°C to +45°C; Humidity tolerance up to 95% noncondensing.

6. APPLICATION SCENARIOS

Hard Rock Mill Scavenger Circuit Challenge:

A quartz vein processing plant was losing significant fine gold values to tailings postcyanidation leach circuit due to inefficient gravity preconcentration.

Solution:

Two GC1500 centrifugal concentrators were installed in parallel on the grinding circuit cyclone underflow as scavengers.

Results:

Within one quarter, plant metallurgical accounting reported a gravity recovery increase of 22%. This directly reduced carboninleach load and reagent consumption, yielding an estimated annualized net value addition of $185,000 USD at a $1,800/oz gold price.

Alluvial/Placer Mining Operation Challenge:

A placer operation in a waterscarce region faced low recovery rates using traditional sluices and had high operational costs associated with water transport.

Solution:

Implementation of a closedloop system featuring three centrifugal concentrators fed by lowwater wash plants.

Results:

The operation achieved an estimated fine gold recovery improvement of over 30%. More critically, it reduced its daily freshwater requirement by over 70%, eliminating the need for two water trucking contracts and significantly lowering operating expenses.

7.COMMERCIAL CONSIDERATIONS

Equipment pricing is tiered based on capacity scale:

Entry Tier (<5 TPH): For pilot plants or smallscale contractors.
Standard Tier (525 TPH): The most common range for midsized operations; includes standard VFD control and polyurethane liners.
HeavyDuty Tier (>25 TPH): For largescale wash plants or mill installations; features ceramic liners and heavyduty bearings as standard.

Optional features include remote monitoring telemetry kits, automated concentrate handling addons, and custom skidmounting packages for rapid deployment.

Service packages are available from basic warranty support up to comprehensive annual maintenance agreements covering liner inspections/replacements, bearing checks, and VFD calibration.

Financing options include capital lease agreements with seasonal payment structures tailored to mining cycles or rentaltopurchase programs for projectbased work.

8.FAQ

Q1:What particle size range is most effective for this centrifugal concentrator?
A1:The unit achieves peak efficiency on liberated free gold particles ranging from approximately 30 mesh down to ultrafine sizes (400 mesh). Optimal performance requires proper screening/sizing ahead of the unit as part of normal feed preparation

Q2 Can this equipment be integrated into an existing hard rock milling circuit?
A2 Yes it is commonly installed on ball mill discharge cyclone underflow or as a scavenger after primary concentration units like jigs Consult our engineering team for specific pump box piping modifications

Q3 What are the primary operational variables that need monitoring?
A3 Key variables are feed slurry density maintained between25–40 solids rotational speed adjusted via VFD based on visible concentrate tailings quality

Q4 How does wear affect performance over time?
A4 Gradual wear in the collection grooves will reduce efficiency Industry testing demonstrates that performance remains stable until approximately80 groove depth loss at which point liners should be replaced according to scheduled maintenance

Q5 What does typical installation require?
A5 Installation requires a level concrete pad adequate slurry feed pump electrical connection per specifications local controls access Provisioning recirculating water sump pump recommended

Q6 Are there financing options available outside of outright purchase?
A6 Yes we offer several commercial structures including36month capital leases with seasonal payment deferrals equipment rental programs suitable exploration projects

Q7 What training support provided operators?
A7 Comprehensive commissioning onsite operator training included all purchases covering startup procedures routine adjustments troubleshooting shutdown sequences