1. PAINPOINT DRIVEN OPENING

Are you managing escalating operational costs and unpredictable throughput in your gravity separation circuit? Inconsistent feed density, fluctuating water pressure, and manual adjustments can lead to significant gold losses in your fine recovery operations. These challenges directly impact your bottom line through lost revenue and increased labor for cleanup and retreatment. How do you ensure peak recovery efficiency across every shift without constant supervision? Can your operation maintain high performance with variable feed grades and particle sizes? The solution requires equipment engineered for stability, control, and maximum mineral capture.

2. PRODUCT OVERVIEW

The ODM Series Centrifugal Concentrator is a highG force, continuousbatch centrifugal separator designed for the recovery of fine gold and other heavy minerals from slurry. It operates as a critical component in gravity concentration circuits, particularly effective for particles too fine for traditional sluices or jigs.

Operational Workflow:
1. Feed Introduction: A controlled slurry feed is introduced into a rotating drum lined with ribbed riffles.
2. Concentration & Fluidization: Centrifugal force pins heavy particles against the riffles while a continuous fluidization water flow maintains a fluid bed, allowing lighter gangue material to be flushed out.
3. Continuous Discharge: Tailings exit the machine continuously through ports at the head of the drum.
4. Concentrate Retention & Flushing: Gold and heavy concentrates are retained within the riffles. After a set operational cycle, the concentrate is automatically flushed into a secure collection point for further processing.

Application Scope & Limitations:
Scope: Ideal for primary, scavenger, or cleaner duty in hard rock and alluvial gold operations; effective on sulphide concentrates; suitable for platinum group metals (PGMs) and other heavy minerals.
Limitations: Performance is dependent on proper particle liberation; not suitable as a primary crusher or for coarse (+2mm) material; requires consistent water supply and pressure.

3. CORE FEATURES

Variable Frequency Drive (VFD) Control | Technical Basis: Precision AC motor control via inverter technology | Operational Benefit: Operators can finetune rotational speed (Gforce) in realtime to match changing feed characteristics without stopping the machine. | ROI Impact: Maximizes recovery across varying ore types, reducing process downtime for adjustments by an estimated 1520%.

Automated Discharge Sequence | Technical Basis: Programmable Logic Controller (PLC) with timed solenoid valves | Operational Benefit: Enables fully automated, timed concentrate flushing cycles, ensuring consistent concentrate grade and eliminating operatordependent variability. | ROI Impact: Reduces labor requirements for manual cleanup, improves security of recovered values, and increases actual processing time.

Dynamic Fluidization System | Technical Basis: Independently controlled, pressurized water rings with calibrated nozzles | Operational Benefit: Provides optimal fluidization water across the entire concentrating bed, preventing compaction of heavies and ensuring efficient gangue rejection. | ROI Impact: Field data shows a 510% improvement in recovery efficiency for sub100micron gold compared to static systems.

AbrasionResistant Composite Drum | Technical Basis: Drum lined with polyurethane or ceramic composite riffles over a steel shell | Operational Benefit: Provides exceptional wear life in highly abrasive slurries, maintaining precise riffle geometry for consistent performance over thousands of hours. | ROI Impact: Lowers total cost of ownership by extending service intervals by up to 300% compared to rubberlined units.

Modular Design & QuickRelease Covers | Technical Basis: Bolted subassemblies with sealed bearings and clampstyle covers | Operational Benefit: Dramatically simplifies routine inspection, maintenance, and component replacement. Full drum access is achieved in minutes. | ROI Impact: Cuts planned maintenance downtime by half and reduces longterm servicing costs.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Typical Concentrator) | ODM Centrifugal Concentrator Solution | Advantage (% Improvement) |
| : | : | : | : |
| Fine Gold Recovery Rate (100 mesh) | 7080% under optimal conditions | Consistently achieves 8592% in field tests | +15% relative improvement |
| Average Concentrate Grade (Au ppm) | Variable; often requires secondary cleaning | Higher primary concentrate grade due to dynamic fluidization | Reduces cleaner stage load by ~25% |
| Maintenance Downtime (Annual Hours) | 4060 hours for liner change & bearing service | 60% reduction |
| Water Consumption per Tonne Processed| ~1.5 m³/tonne average consumption| Optimized nozzle design reduces usage to ~1.1 m³/tonne| ~27% reduction |

5. TECHNICAL SPECIFICATIONS

Model: ODM1000
Capacity Range: 8 12 tonnes per hour (dry solids), dependent on feed density and particle size distribution.
Power Requirements: 11 kW main drive motor (VFD controlled), 0.75 kW auxiliary pump.
Material Specifications: Mainframe: Carbon steel (painted or optional stainless); Drum Shell: Hardened steel; Lining Options: Premium polyurethane or ceramic composite riffles; Fluidization Rings: Stainless steel.
Physical Dimensions (L x W x H): 2200 mm x 1200 mm x 1650 mm.
Operating Range: Ambient temperature: 20°C to +50°C; Requires clean process water at 200350 kPa pressure.

6. APPLICATION SCENARIOS

Hard Rock Gold Mine – Scavenger Duty Application

Challenge: A milling circuit was losing significant fine gold to tailings due to inefficient gravity recovery postball mill grind (~150 microns). Existing equipment could not effectively capture liberated particles below 74 microns.
Solution: Installation of two ODM Centrifugal Concentrators in parallel on the combined cyclone underflow stream as a scavenger circuit.
Results: Monthly gravity gold production increased by 22%. Overall plant recovery improved by an estimated 3%, providing a payback period on equipment of less than six months.

Alluvial / Placer Operation – Primary Recovery Upgrade

Challenge: An operation using traditional sluices experienced high losses during periods of variable feed grade and required constant manual adjustment from operators.
Solution: Replacement of two sluice lines with a single ODM Centrifugal Concentrator fed by a classifying screen undersize.
Results: Achieved more consistent recovery regardless of operator shift changes, reducing gold loss variability by over 40%. Labor was redeployed from sluice monitoring to other areas.

7. COMMERCIAL CONSIDERATIONS

The ODM Centrifugal Concentrator is offered in three capacitybased tiers:
1. ODM500 Pilot/Modular Plant Tier: For testing or smallscale operations (<5 tph).
2. ODM1000 Standard Production Tier: For midscale plants (<15 tph).
3. ODM2000 HighCapacity Tier: For largescale circuits (>20 tph).

Optional Features include PLC automation packages with data logging, remote monitoring capability via SCADA interface, stainless steel construction for corrosive environments.

Service packages range from basic commissioning support to comprehensive annual maintenance agreements that include wear part inspections and replacements at fixed annual costs.

Financing options are available through partner institutions including equipment leasing plans over 2460 months or renttopurchase agreements tailored to cash flow requirements.

8.FAQ

Q1 Is the ODM Centrifugal Concentrator compatible with our existing cyclone overflow or grinding circuit discharge?
Yes, provided it is integrated correctly with an appropriate sump and feed pump system designed to deliver consistent slurry density within specified parameters (<35% solids by weight). Our engineering team can review your flowsheet.

Q2 What is the expected impact on our power consumption when adding this unit?
The ODM1000 model has a total connected load under full operation of approximately 12 kW per unit—comparable to several large slurry pumps—making its incremental power demand manageable within most plant infrastructures.

Q3 How does this concentrator handle clayrich or highsilt content ores that tend to blind traditional equipment?
The dynamic fluidization system provides continuous agitation that helps mitigate blinding compared to static beds found in older technologies but preclassification via hydrocyclone desliming remains strongly recommended where clays are present

Q4 What are typical commercial terms including delivery lead time warranty coverage?
Standard delivery lead time is 14 weeks from order confirmation FOB manufacturing facility Standard warranty covers parts against manufacturing defects 12 months excluding normal wear items like liners

Q5 What training do you provide our operators regarding setup calibration daily operation procedures?
We provide comprehensive onsite commissioning training covering startup/shutdown sequences daily checks troubleshooting guides along detailed operational manuals accessible digitally