Gold Recovery Activated Carbon Supplier for CIP/CIL
YELI Carbon supplies coconut shell granular activated carbon for gold CIP/CIL circuits in Africa and other mining regions: 6×12 mesh, a grade-specific hardness target (typical reference ≥98%), iodine 1000–1300 mg/g, and a COA issued for every batch.
Reply within 24 h · free standard 500 g sample; international courier at the buyer's account; mainland China shipping included · COA of the exact lot
Coconut shell charcoal for gold extraction in Africa
YELI Carbon is a gold recovery activated carbon supplier for CIP and CIL plants, offering coconut shell granular carbon in 6×12 mesh with iodine, hardness, density, moisture and ash limits stated against the agreed test methods. The commercial route starts with the circuit: confirm whether the project uses CIP, CIL or heap-leach CIC, then match particle size to the interstage screens or column design. Buyers can request the current specification, an exact-lot COA and a 500 g sample before placing a production order. For African projects, include the destination port, monthly tonnage, target iodine grade, packing and required delivery date. YELI can then quote FOB China or CIF to ports such as Tema, Abidjan, Dakar, Lagos, Mombasa or Dar es Salaam and state the applicable lead time, packing and batch-release terms in writing. These inputs make competing supplier offers directly comparable.
- Product
- 6×12 coconut shell GAC for CIP/CIL gold recovery
- Published iodine range
- 1000–1300 mg/g, referenced to ASTM D4607
- Batch evidence
- Exact-lot COA with tested values and stated methods
- Factory and export
- Longyan production; export coordination from Xiamen
- Quotation terms
- FOB China or CIF Tema, Abidjan, Dakar and other ports
- Sample
- Standard 500 g sample; international courier at buyer's account
Read the coconut shell charcoal selection guide for African gold plants →
Specifications — gold CIP/CIL grade coconut shell GAC
Typical grade references; exact specifications vary by factory, production process and lot. The agreed contract limits and exact-lot COA govern each shipment.
Why Apparent Density (0.45–0.52 g/cm³) Matters in CIL/CIP Circuits
In gold recovery, apparent density (ASTM D2854) is more than a packaging figure. It sets how much carbon a tank actually holds, whether the bed stays suspended in the pulp, and — over a full campaign — the cost per ounce recovered.
1. Carbon inventory and tank loading accuracy
Apparent density fixes the mass of carbon that a given tank volume holds. In a tank charged with 10 m³ of carbon, the difference between 0.45 g/cm³ and 0.52 g/cm³ is roughly 4,500 kg versus 5,200 kg — about 700 kg, or 15%, on the same fill. Specifying a defined density band keeps initial charging and routine top-up quantities predictable, and makes quotations from different suppliers directly comparable.
2. Hydraulic fluidisation in agitated tanks
Gold-recovery carbon has to stay uniformly suspended in a dense slurry — CIP/CIL pulps typically run 45–50% solids (w/w):
- Too light (below ~0.45 g/cm³): granules ride on top of the slurry, so contact with the cyanide solution is uneven and the upper interstage screens blind faster.
- Too heavy (well above this band — normally coal-based and other high-density feedstocks): granules settle ahead of the pulp, which can leave under-agitated zones at the tank bottom and raise agitator power draw.
- 0.45–0.52 g/cm³ (our gold grade): the band we target for air-agitated and mechanically stirred CIL/CIP tanks, so the bed stays in suspension through the designed contact time.
3. Pore structure versus attrition resistance
Apparent density is an indirect read on activation: more burn-off means more internal pore volume and a lighter granule. Our gold grade holds iodine 1000–1300 mg/g (ASTM D4607) with hardness ≥98% (ball-pan) and abrasion retention ≥98.2% (ASTM D3802, 30 min agitation) — pore development for gold loading, with the particle strength to survive screening, transfer and elution.
Apparent density is a specification band, not one fixed number. Values vary by factory and production lot; the agreed limit and tested value appear on the exact-lot COA.
Tell us your tank volume and target density and we will confirm the charge weight per tank — request a quote or see a sample COA.
Why coconut shell carbon wins in a gold circuit
- Faster gold loading kinetics — fine micropore structure loads dissolved gold quickly from cyanide leach slurry.
- Lower attrition loss — hardness ≥98% means less carbon (and the gold it carries) lost as fines through screening, elution and regeneration.
- Longer service life — typically 10–30 thermal regeneration cycles before staged replacement.
- Predictable budgeting — a COA for every batch, so make-up carbon planning is based on measured numbers, not brochure claims.
Not sure which grade fits your circuit? See the full CIP/CIL grade page for mesh selection, dosage and regeneration guidance.
How should a gold plant evaluate activated carbon?
A gold plant should evaluate activated carbon on the full duty cycle, not on iodine value alone. Start with the process route: CIC treats a clarified solution in columns, while CIP and CIL handle ore pulp in agitated tanks, so feed solids and screening requirements differ. For the candidate carbon, require a representative particle-size distribution, ball-pan hardness or abrasion resistance, apparent density, moisture, ash and iodine number, each tied to a stated test method and acceptance limit. Review gold adsorption rate or capacity data where available, then confirm performance on the plant's own solution and temperature. Finally, ask for the exact-lot COA, retained-sample policy, packing and handling data. A specification is credible only when the supplier can connect the quoted range to a tested batch and explain how the delivered lot will be sampled and released.
Sources: ASTM D4607 iodine number method; ASTM D3802 ball-pan hardness method; YELI specification sheet; sample batch COA.
What data should be requested before a quotation?
A useful carbon quotation starts with operating data. Request and supply the circuit type, feed source, solution or pulp flow, gold tenor, temperature, pH, cyanide concentration and suspended solids. For a CIC column, add column diameter, bed depth, design pressure drop, flow direction, backwash limits and support or screen details. State whether carbon will be stripped in place or transferred, then give the elution, acid-wash and regeneration conditions. The specification should list mesh distribution, acceptable fines, iodine band, hardness, density, moisture and ash limits, plus packing, port, trial quantity and delivery schedule. Ask for a batch COA covering the exact lot, not a generic brochure value. Comparing suppliers on these inputs shows whether the quoted carbon fits the hydraulic and metallurgical duty, and it gives the buyer a clear basis to reject an off-spec delivered batch.
Frequently asked questions
Which activated carbon is best for gold recovery in CIP/CIL?
Hard coconut shell granular activated carbon in 6×12 mesh (1.7–3.4 mm) with iodine 1000–1300 mg/g and hardness ≥98%. It loads gold faster and survives more regeneration cycles than coal-based grades, which lowers cost per ounce recovered.
Do you provide a batch COA and a free sample?
Yes. A standard 500 g sample is free and is supplied with the COA of its production lot. International courier charges are paid by the buyer; shipping within mainland China is included. Larger trial lots are quoted separately. K/R testing is not part of our standard batch COA and may be arranged by the buyer with an independent laboratory under GB/T 32992-2016.
Go deeper — gold recovery carbon guides
Get your batch COA and a sample today
Send us your circuit type (CIP/CIL), target mesh size and monthly tonnage — we reply within 24 hours with price, specification and logistics options.
Get Batch COA & Sample → Email the technical teamXiamen Yeli New Materials Co., Ltd. (YELI Carbon) — www.yelicarbon.com