Gold CIP/CIL Grade Activated Carbon
New to gold recovery carbon? Start with our Gold Recovery Carbon Hub — specs, ASTM test data, sample & COA request in one page.
Short answer: Gold CIP/CIL grade coconut shell activated carbon: 6x12 mesh, iodine 1000-1300 mg/g, hardness ≥98%, moisture <=5%. Produced in Fujian - one of China's coconut shell activated carbon production hubs.
Produced in Fujian — one of China's coconut shell activated carbon production hubs — our GAC is engineered for carbon-in-pulp and carbon-in-leach circuits — 6×12 mesh, iodine 1000–1300, hardness ≥98%, low ash. Produced, QC-tested and packed at our own factory in Longyan, Fujian.
Batch COA with every shipment · 500 g lab sample or 25 kg bag at cost
Built for the Carbon Circuit, Not Just the Datasheet
In a CIP or CIL plant, carbon is screened, pumped, eluted and regenerated in a continuous loop. A grade that looks good on paper but breaks down in service costs you gold in the fines and money in make-up carbon. Our gold-grade GAC is specified for the full duty cycle:
- ✓ Hardness ≥98% — low attrition through screens and kilns
- ✓ Iodine 1000–1300 mg/g — fast gold loading kinetics
- ✓ Tight 6×12 / 3×6 mm cut — clean screening and elution
- ✓ Low ash & low fines — less inert weight, cleaner pregnant solution
- ✓ COA with every batch — verify it in your own lab
Gold CIP/CIL Specification
| Parameter | Typical Range |
|---|---|
| Mesh size | 6×12 mesh / 3×6 mm (6×16, 3×6, 8×16 on request) |
| Iodine value | 1000 – 1300 mg/g |
| Hardness (ball-pan) | ≥ 98% standard |
| Moisture (as packed) | ≤ 5% |
| Ash content | ≤ 5% · low-ash ≤ 3% available |
| K-value (equilibrium gold loading capacity) | 8–12 kg Au/t (≈ 8–12 mg Au/g) in high-grade circuits — GB/T 32992—2016, in-house QC, per batch |
| Bulk density | 0.45 – 0.52 g/cm³ |
| R-value (2-hour gold adsorption rate) | 52–58% of equilibrium loading within 2 h in a standard ~1000 ppm Au cyanide solution — GB/T 32992—2016 |
| Base material | 100% coconut shell (Indonesia / Philippines) |
| Test methods | ASTM D4607 (iodine), ASTM D3802 (hardness), ASTM D2867 (moisture) |
| Packing | 25 kg bags · 500–1000 kg jumbo bags · shrink-wrapped pallets |
Verified ASTM performance data (measured per batch):• Abrasion resistance — ASTM D3802: retention rate ≥ 98.2% after 30 mins agitation test.• Iodine value — ASTM D4607: 1000–1300 mg/g, batch tested.• Apparent density — ASTM D2854: 0.45–0.52 g/cm³.• Gold loading kinetics: 52–58% of equilibrium loading reached within 2 h in a standard ~1000 ppm Au cyanide solution.Representative batch data — final specifications per the official Certificate of Analysis (COA) issued with each shipment. The COA for your specific batch states the tested numbers (re-test on request).
Which Activated Carbon for Gold Recovery? — 3-Way Comparison
For CIP/CIL gold recovery, the carbon type decides how much gold you keep. Compare hardness, pore structure and suitability below.
| Carbon Type | Hardness | Pore Structure | Suitability for Gold (CIP/CIL) |
|---|---|---|---|
| ✔ Coconut Shell Carbon — BEST | ≥ 98% (extreme) | Micropores | ✔ Recommended for gold mining — no breakdown in CIL/CIP tanks, zero gold loss, maximum gold loading |
| ⚠ Coal-Based Carbon | 80–90% (soft) | Mesopores | ⚠ Not for gold — wears and crushes, gold fines are lost into tailings |
| ✖ Wood-Based Carbon | < 70% (very soft, dusty) | Macropores | ✖ Never use in gold mines — powder carries away already-recovered gold |
Three Specs That Drive Your Cost Per Ounce
Hardness = Make-Up Cost
A 2% difference in attrition can mean nearly a tonne of make-up carbon a year on a mid-size plant — before counting the gold carried away in the fines.
Iodine = Loading Rate
Consistent iodine 1000–1300 keeps your gold loading rate predictable, so elution and electrowinning stay on schedule.
Consistency = Planning
Documentation — See What We Ship With
Every order ships with complete documentation: COA (Certificate of Analysis for the exact lot), TDS (technical data sheet), business license, ISO 9001, and SDS. View a sample COA from our own QC laboratory and our company documents — and test the delivered lot in your own lab.
Your circuit was designed around a spec. We hold the same spec batch after batch — with a COA to prove each one.
How is gold-grade carbon packed for export?
25 kg laminated export bags on shrink-wrapped pallets, or 500–1000 kg jumbo bags, container-ready. We can also arrange partial-container or consolidated loads for African buyers.
Can you supply evaluation samples before I order?
Yes — 500 g lab packs or 25 kg bags at cost, with the COA of that exact lot, credited against your first container order.
What is your production MOQ?
One 20 ft container (roughly 16–18 tonnes). For smaller first orders, ask about consolidated programs for West African destinations.
How to Order — From Sample to Container
| Step | Quantity | What You Get |
|---|---|---|
| 1. Sample | 500 g – 2 kg | Lab sample with COA of the exact lot; courier cost only (or free with trial order) |
| 2. Trial | 25 kg – 1 MT | Evaluation bag/ton for your own lab or a small tank; cost credited against first container order |
| 3. Bulk | 20 ft container (≈16–18 t) or 40 ft (≈20–22 t) | Best unit pricing, COA per batch, custom packing per your inland route |
Flexible start: tell us your target spec and quantity — we will quote FOB or delivery terms, confirm the grade, and arrange consolidated loads for West African destinations on request.
Compare Three Grades in One Sample Pack
Instead of guessing, test on your own liquor: our 3-grade sample pack ships three coconut shell GAC grades in one parcel — e.g. iodine 1000 / 1100 / 1200, each with its own COA and test method. Run a bench adsorption or small-column test, see which grade fits your pulp chemistry, then order the one that wins.
Spec Tolerances — Written Into Every Contract
Every order confirms tolerance limits for the delivered lot: iodine ±50 mg/g of target, hardness at or above agreed minimum, moisture ≤ 5% as packed, fines within agreed range. If the delivered batch is off-spec, we replace it or credit you — that guarantee is in the contract, not just the brochure.
Lead Times & Delivery Proof
Sample packs ship within 3 working days by courier. Container orders: production 10–15 days from confirmed spec, then sea freight to West African ports (Lagos, Tema, Abidjan, Dakar) with typical transit 30–40 days. We provide the bill of lading, packing list and per-batch COA with every shipment — so your logistics team has full documentation from day one.
Download our printable gold recovery carbon spec sheet & buyer checklist — print it, compare quotes, verify COA.
Match This Grade to Your Circuit
Tell us your plant size, screen aperture and target iodine — we will confirm the grade, packing and delivery schedule within 24 hours. We produce about 8,000 tonnes of coconut shell activated carbon per year at our Longyan plant, with dedicated gold-grade lines and 50 containers of raw char stock for steady supply.