JKL CRM-12 Rotary Sample Collector

The JKL CRM-12 Rotary Sample Collector is an automatic equipment unit engineered for the reception, indexed distribution, and sequential storage of samples originating from primary and/or secondary sampling systems in mineral processing plants, port terminals, and mining operations. Its rotary configuration ensures proper sample segregation, preventing cross-contamination while maintaining full operational traceability.

1. Operating Principle

The JKL CRM-12 operates by means of a motor-driven rotary indexing table that positions each container precisely beneath the sample discharge chute.

The system allows:

• Automatic sequential distribution
• Programming by number of increments
• Manual or automatic PLC-controlled operation
• Full synchronization with the overall sampling system

Rotational movement is driven by an industrial continuous-duty gearmotor, incorporating a precision positioning mechanism and confirmation sensors for indexed alignment.

2. General Technical Configuration

Sample collector. The equipment has the following characteristics:

Mechanical Features

• Model: CRM-12 (12 sample positions)
• Structural Frame: ASTM A36 carbon steel structural skid
• Rotary System: Reinforced circular plate with central shaft and heavy-duty bearings
• Drive Unit: Industrial gearmotor with IP protection rating suitable for mining environments
• Transmission System: Direct coupling or protected industrial chain drive
• Approximate Weight: ~350 kg (reference configuration)
• Front Access: Inspection and maintenance access doors

3. Sample Containers

• Quantity: 12 independent containers
• Material: High-density abrasion-resistant polyurethane
• Typical Capacity: 20 liters per container
• Mounting System: Secure locking fit to prevent vibration and misalignment
• Removal: Quick manual removal for laboratory transfer

Polyurethane fabrication minimizes wear caused by abrasive concentrates, tailings, or moist fine materials, extending service life and reducing maintenance requirements.

4. Anti-Corrosion Protection System

Industrial coating system compliant with NTI-PIN-001 / NTI-PIN-004 specifications:

• Surface Preparation: SSPC-SP10 Near-White Blast Cleaning
• Primer Coat: Macropoxy 646 – 6 mils DFT
• Intermediate Coat: Macropoxy 646 – 6 mils DFT
• Topcoat: Sumathane HS – 3 mils DFT
• Structure Color: RAL 3020 Red
• Safety Guards: Safety Yellow

This coating system ensures high resistance in coastal and mining environments characterized by high humidity, salinity, and airborne fine particles.

5. Control System

• Integrated with the sampling system power and control panel
• Synchronized operation with:
  • Primary sampler
  • Secondary sampler
  • Rotary sample divider
• Instrumentation signals:
  • Indexed position confirmation
  • Rotation status feedback
  • Operational status
• SCADA integration ready (external configuration)

6. Typical Applications

• Final concentrate
• Tailings
• Flotation feed
• Coarse or fine mineral streams
• Third-party ore purchasing operations
• Time-proportional or mass-proportional sampling systems

7. Technical Benefits

• Ensures sample traceability by shift or campaign
• Eliminates intermediate manual handling
• Reduces risk of sample mixing or cross-contamination
• High mechanical robustness for continuous operation
• Low maintenance requirements
• Compatible with statistical validation programs (nomogram / variogram analysis)
• Contributes to reliable metallurgical accounting

8. Advantages over Conventional Manual Collectors

9. Metallurgical Accounting Approach

The CRM-12 constitutes a critical component of an integrated sampling system because it:

• Maintains lot independence
• Enables separation by defined sampling intervals
• Minimizes human error
• Complies with representativeness principles required by international standards such as ISO 13909