Factory-direct activated carbon from our production base in Shizuishan, Ningxia
Hydrometallurgical Cyanidation Circuits
Evaluate gold-recovery carbon by particle retention, hardness, abrasion, ash and mine-specific adsorption kinetics, not iodine value alone.
Recommended carbon
High-hardness coconut shell GAC in a mesh range matched to the circuit screens and carbon-transfer equipment
Granular · GAC
High-hardness coconut shell GAC for CIP, CIL and CIC circuits, reviewed for mesh retention, abrasion, ash and mine-specific gold adsorption testing.
Selected high-hardness coconut shell
6x12, 6x16, 8x16 mesh
Granular · GAC
Hard coconut shell GAC for water, air and precious-metal recovery systems, supplied in common mesh ranges with batch-specific quality confirmation.
Selected coconut shell · steam activated
8x30, 12x40, 20x50 meshGrade matching
Review the target contaminants, carbon grade, sizing and test requirements together.
Reference grades are comparison directions, not a guarantee of interchangeability. Confirm the required specification and application testing before substitution.
Specification
The reference ranges most RFQs start from, before process conditions narrow them down.
| Primary sourcing direction | High-hardness coconut shell GAC in a mesh range matched to the circuit screens and carbon-transfer equipment |
|---|---|
| Common mesh directions | 6x12, 6x16 and 8x16 mesh; final distribution must match the equipment |
| Iodine value | Common target: >=1,000 mg/g; not a stand-alone gold-performance guarantee |
| Hardness | Common target: >=97%, reviewed together with abrasion and fines generation |
| Ash | Common target: <=5% |
| Moisture | Typically <=5% |
| Gold-specific checks | Adsorption rate, loading capacity, K/R values or a mine-specified bottle-roll test |
Mine-solution testing is the most relevant qualification route. Published typical ranges do not replace testing under the buyer's actual cyanide, pH and competing-ion conditions.
Gold-recovery circuit reference. Carbon retention, attrition and adsorption performance must be qualified against the actual circuit and mine solution.
Gold-recovery carbon must remain in the circuit and adsorb efficiently under the actual mine-solution conditions. Start with screen aperture and the carbon-transfer method, then compare particle distribution, hardness, abrasion, fines generation and mine-specific adsorption kinetics.
Balance adsorption kinetics with abrasion resistance through repeated slurry contact and carbon transfer.
Qualify carbon in the combined leach-and-adsorption environment, including competing species and attrition.
Match particle size and hydraulic behavior to the column internals, retaining screens and solution flow.
Test adsorption rate and loading against representative pregnant solution before setting batch acceptance limits.
System design
Confirm these reference conditions against the actual process and equipment.
Interstage Screen Aperture
0.80 – 1.00 mm wedge-wire screens (use 6x12 mesh for >0.85 mm screens; 6x16 for 0.7–0.8 mm)
Undersize & Platelet Control
≤ 2.0%–3.0% undersize as packed (ASTM D2862); factory water-washed and de-dusted
Typical Pulp Carbon Concentration
10 – 25 g/L in CIL/CIP agitated tanks; 400–480 g/L packed bed in CIC columns
Optimal Slurry pH Window
pH 10.0 – 11.0
Elution & Strip Compatibility
Atmospheric Zadra, Pressurized Zadra (135–140 °C), and AARL split-elution protocols
Thermal Reactivation Kiln Temp
650 – 750 °C steam atmosphere rotary kiln regeneration with minimal attrition loss
Published design practice for sourcing reference, not a guarantee for a specific system.
Grade review
Circuit type, screen aperture, carbon transfer method, slurry or solution conditions, target mesh, hardness and abrasion method, sample-test protocol, quantity and packing.
Process factors to specify
Recommended qualification path
FAQ
Iodine measures micropore adsorption under a standard test. Gold circuits also depend on adsorption kinetics, loading capacity, hardness, abrasion, particle retention and the mine solution.
Larger project samples for bottle-roll, column or circuit testing can be reviewed. Sample quantity and courier arrangements depend on the test plan.
Yes. Common mesh directions, pre-treatment and water-polishing requirements can be reviewed against the circuit and order quantity.
Technical library
· Brand Cross-Reference & Sourcing
Technical specification crosswalk translating AquaSorb 1000/2000/CS water GAC, EcoSorb GX and AddSorb Sulfox pellets, GoldSorb 5500/6000 gold carbon, and ColorSorb 620/G5 decolorization PAC into ASTM and AWWA COA limits.
· Metallurgical & Gold Mining
In CIL, CIP, and CIC gold leach circuits, fine carbon attrition is direct gold loss to tailings. Learn how to specify pre-polished, platelet-free coconut shell GAC by ASTM D3802 hardness, interstage screen mesh, and K/R adsorption kinetics.
Related sectors
Coal based or coconut shell GAC for fixed beds; PAC for dosing and emergency treatment
Pellet activated carbon for controlled pressure drop in VOC and odor beds; granular carbon where the equipment and vapor duty favor GAC
Pellet or granular carbon for physical adsorption; selected impregnated grades for contaminant-specific chemisorption
Wood based PAC, commonly 200 or 325 mesh, qualified by actual-liquid decolorization and filtration testing
Quick factory inquiry
Share the product, target index, quantity and application. Standard inquiries normally receive a reply within 24 hours on business days.
Enter your business email to open the printable technical sheet and illustrative test values. Request a dated, batch-specific COA separately for order acceptance.
