Sep 07,2026
In CIP/CIL gold extraction, the performance of coconut‑shell activated carbon directly governs gold recovery efficiency and overall operational expenditure. Norit GCN612G is a well‑established premium coconut‑shell granular carbon globally deployed for gold CIP/CIL/CIC circuits. YHGOLD GRADE 1903 is YH‑Carbon’s SGS‑validated 6×12 coconut‑shell gold‑recovery carbon, engineered as a drop‑in, cost‑competitive alternative for GCN612G. This guide compares the two products parameter‑by‑parameter. Where test methodologies differ, we state it transparently, enabling you to make objective procurement decisions.
All figures are sourced from manufacturer official datasheets; for YHGOLD GRADE 1903, data comes from SGS test report. Notes are added where test standards are inconsistent.
| Parameter | YHGOLD GRADE 1903 | Norit GCN612G | Notes |
|---|---|---|---|
| Raw material | Coconut shell | Coconut shell | Same feedstock category, steam‑activated |
| Application | CIL / CIP / CIC gold recovery | CIL / CIP / CIC gold recovery | Identical process scope |
| Iodine number | 1145 mg/g (SGS verified) | Not a primary published metric | High iodine indicates well‑formed micropore structure for Au(CN)₂⁻ adsorption |
| Ash content | 2.41% (SGS verified) | ≤3.5% | Lower ash is favorable; YHGOLD 1903 sits well below GCN612G upper limit |
| Moisture | 4.7% (SGS verified) | ≤5% | Both within industry standard tolerance |
| Strength / Hardness | 98.3% (GB/T method) | ≥99% (Ball‑Pan ASTM D3802) | ⚠️ Different test principles; values cannot be directly compared |
| K‑value (gold loading capacity) | 31 kg/t | 29 kg/t | YHGOLD range fully covers GCN612G nominal value |
| R‑value (adsorption rate) | 60‑62% | 60% | Upper performance band of YHGOLD matches GCN612G benchmark |
| Attrition | Data pending | <1.0% (rolling‑bottle test) | YHGOLD attrition test ongoing; results will be published upon completion |
| Platelets content | Data pending | <3.5% | YHGOLD platelet testing in progress |
| Mesh size | 6×12 / 8×16 / 5×10 | 6×12 / 8×16 | Identical particle‑size options; mechanical drop‑in compatible |
Honest note on hardness comparison: YHGOLD GRADE 1903’s 98.3% strength is measured by Chinese GB/T compression‑based standard. Norit GCN612G ≥99% hardness follows Ball‑Pan tumbling abrasion ASTM D3802 test method. Compression resistance and tumbling abrasion resistance characterize distinct physical properties. A direct numerical comparison is misleading. If carbon mechanical durability ranks high on your tender criteria, request both suppliers deliver test data under one unified test standard or execute in‑house rolling‑bottle attrition trials.
Iodine number acts as proxy for micropore surface area. For coconut‑shell gold‑recovery carbon, iodine above 1000 mg/g confirms sufficient micropores to capture gold‑cyanide complex molecules.
Ash occupies internal pore volume that should host gold‑cyanide adsorption sites. Higher ash gradually degrades performance across repeated thermal reactivation cycles.
For any gold‑recovery activated carbon, all secondary specifications ultimately serve two core practical outcomes: how much gold carbon can adsorb and how fast.
Norit GCN612G nominal published performance: K = 29 kg/t, R = 60%.
YHGOLD GRADE 1903 delivers K 27‑31 kg/t and R 54‑62%. Its mid‑to‑upper performance range meets and partially exceeds GCN612G benchmark K‑value and R‑value, placing YHGOLD GRADE 1903 within equivalent performance tier with better commercial pricing.
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Carbon inside continuously agitated CIL/CIL tanks suffers constant particle‑to‑particle and slurry‑abrasion stress. Insufficient hardness generates carbon fines. Fine carbon particles loaded with adsorbed gold pass through inter‑stage screens and discharge within tailings. Each incremental percentage of fines translates directly into unrecoverable gold losses.
These two test methods evaluate different mechanical failure modes: compression crushing vs cyclic abrasive tumbling. A carbon sample scoring 98.3% under GB/T is not inherently inferior to a 99% Ball‑Pan result, and cross‑standard numerical comparison cannot prove one grade mechanically superior.
Practical recommendation: If mechanical durability is decisive procurement factor, ask both vendors for test results under identical test standard (either ASTM D3802 Ball‑Pan or GB/T 12496.6), or conduct your own rolling‑bottle attrition laboratory test to achieve apples‑to‑apples comparison.
YHGOLD GRADE 1903 and Norit GCN612G coconut shell gold‑recovery carbon side by side — comparing grain size, shape, and uniformity.
Norit publishes complete attrition (<1.0 %, rolling‑bottle test) and platelets (<3.5 %) specifications for GCN612G. Low attrition reduces carbon inventory loss in CIL loops; low‑platelet content minimizes flat‑shaped carbon grains which cause poor screen retention.
For YHGOLD GRADE 1903, rolling‑bottle attrition and platelet content test results are currently under final laboratory validation. Instead of quoting estimated or extrapolated proxy numbers, we mark metrics as “data pending”. Only verified measured data will be released and this article will be updated once lab reports are finalized.
Should these parameters be mandatory tender requirements, contact YH‑Carbon for latest testing progress, or order matched samples and run independent lab testing.
Norit (Cabot) is a globally recognized premium activated‑carbon brand. Its product pricing reflects international brand premium, global warehousing, multi‑layer distribution network and mature application technical support infrastructure — which brings tangible value for many mining operators.
YHGOLD GRADE 1903 adopts different market positioning: comparable metallurgical performance with more competitive factory‑direct pricing. For mines consuming hundreds of tons carbon annually, moderate per‑ton cost saving accumulates into substantial total‑operating‑cost reduction, without compromising gold‑adsorption performance requirements of existing CIP/CIL circuits.
Samples of YHGOLD GRADE 1903 coconut‑shell activated carbon for gold mining showcased on‑site during client factory tours. Buyer visits and independent third‑party audits are warmly welcomed.
| Factor | Norit GCN612G | YHGOLD GRADE 1903 |
|---|---|---|
| Iodine number | Not primary specification | 1145 mg/g (SGS verified) |
| Ash content | ≤3.5 % | 2.41 % (SGS verified) |
| Moisture | ≤5 % | 4.7 % (SGS verified) |
| Strength / Hardness | ≥99 % (Ball‑Pan ASTM D3802) | 98.3 % (GB/T, different test standard) |
| K‑value | 29 kg/t | 27‑31 kg/t |
| R‑value | 60 % | 54‑62 % |
| Attrition | <1.0 % | Data pending |
| Platelets | <3.5 % | Data pending |
| Mesh size | 6×12 / 8×16 | 6×12 / 8×16 |
| Price positioning | Global premium branded | Factory‑direct cost‑competitive |
| Third‑party verification | Cabot‑Norit quality management | SGS / Intertek batch‑wise COA available |
Consider YHGOLD GRADE 1903 if: You are currently operating Norit GCN612G within CIP/CIL/CIC circuits, want to cut carbon‑related operational budget, and prefer drop‑in replacement without circuit modification or risking gold‑recovery performance. YHGOLD GRADE 1903 shares identical mesh size, overlapping K‑value / R‑value performance envelope, SGS third‑party validation, and is tailored for cost‑conscious mining operations.
Continue with Norit GCN612G if: Your tender specification explicitly mandates Norit brand; or your metallurgical acceptance criteria require fully published attrition and platelet metrics which YHGOLD 1903 has not yet finalized. Brand‑specified procurement and complete full‑spec datasheet are decisive for certain mine procurement workflows.
The gold standard for any carbon‑grade comparison remains parallel loading trials using your own site ore pulp. Request matched carbon samples from both suppliers and test under identical process conditions; this delivers definitive on‑site performance conclusion.
Tell us your CTC, target K/R values, and Quantity. We'll send a spec sheet, SGS certificate,TDS and pricing within 1 hours — and ship free samples for test.
YHGOLD GRADE 1903 is designed as cost‑effective mechanical drop‑in alternative for Norit GCN612G. Both are coconut‑shell steam‑activated gold‑recovery carbon with 6×12 / 8×16 mesh dimension, overlapping K‑value and R‑value performance windows. Still, parallel side‑by‑side adsorption testing using your actual mine pulp under identical operating parameters is strongly recommended for final validation before full‑scale switch.
Direct numerical comparison is invalid. YHGOLD GRADE 1903 98.3 % strength is measured by GB/T compression‑based test method; Norit GCN612G ≥99 % hardness uses ASTM D3802 Ball‑Pan tumbling abrasion test. The two methodologies assess different mechanical failure modes. Ask both vendors to provide reports under unified test standard or perform in‑house attrition testing for true equivalent comparison.
Per SGS test report: iodine number 1145 mg/g, ash 2.41 %, moisture 4.7 %, GB/T strength 98.3 %. Gold performance K‑value 27‑31 kg/t, R‑value 54‑62 %. Attrition and platelet content remain under testing and marked data‑pending; only measured test results will be published.
Coconut‑shell derived activated carbon develops favorable micropore distribution matching gold‑cyanide complex molecular dimension, combines high inherent mechanical strength and relatively low native ash content. These critical properties enable efficient Au(CN)₂⁻ adsorption and long‑term survival inside highly agitated CIL/CIP tanks. Both Norit GCN612G and YHGOLD GRADE 1903 adopt coconut‑shell raw material for exactly these reasonsNORIT.
Yes. YH‑Carbon supplies coconut‑shell gold‑recovery granular carbon globally to mining sites. Full international freight arrangement, complete export documentation and destination‑port delivery solutions are available. Cargo is packed in jumbo bags for 40’HC container loading, with SGS / Intertek batch‑wise COA documentation available upon every shipment.
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