MET-CAR-21
Metallurgical Testwork & Leaching
Carbon Activity (R-Value) & Gold-on-Carbon CIL/CIP Optimization
Diagnostic evaluation of virgin, plant, and regenerated activated carbon to maximize gold adsorption rates and prevent soluble gold losses in tailings slurry streams.
Detection Limits
Activity %: 0.1% – 100% | Au on carbon: 1.0 – 20,000 g/t
Turnaround (TAT)
Standard: 2-3 Working Days | Express: 24 Hours
Sample Requirement
100g to 500g fresh, regenerated, or plant activated carbon
Quality Framework
ISO/IEC 17025 Compliant
Analytical Overview & Methodology
Maintaining high activated carbon activity prevents millions in dissolved gold tailings losses. RVA Laboratories provides accredited Carbon Activity & Loading Analysis (MET-CAR-21) for processing plant optimization.
Technical Method Specifications (MET-CAR-21)
| Method Code | MET-CAR-21 |
|---|---|
| Element Coverage | Carbon Activity Rate (R-value), Gold on Carbon (g/t), Silver on Carbon (g/t), Base Metal Loading |
| Detection Range | Activity %: 0.1% – 100% | Au on carbon: 1.0 – 20,000 g/t |
| Sample Requirement | 100g to 500g fresh, regenerated, or plant activated carbon |
| Instrumentation | Standardized Kinetic Agitation Cells + High-Temperature Carbon Ashing + Flame AAS |
| Standard Turnaround | Standard: 2-3 Working Days | Express: 24 Hours |
Laboratory Protocols & Execution Specs
- Kinetic Adsorption Rate (R-value): Standardized 1-hour agitation in gold stock solution
- Loaded Carbon Assay: Direct ashing at 650°C and aqua regia digestion
- Fouling Evaluation: Calcium, carbonate, and organic foulant quantification
JORC & NI 43-101 Data Integrity Guarantee
Every batch tested under method MET-CAR-21 includes matrix-matched Certified Reference Materials (CRMs), analytical blanks, and duplicate splits at a minimum 20% insertion rate. Official digital Certificates of Analysis are digitally signed and traceable.