Jacobi Gold Recovery Carbon Alternative: A Cost-Effective Match for Goldsorb & PICAGOLD (CTC 45 / 55 / 60)

1. Jacobi Model Cross-Reference Table

Jacobi supplies gold recovery carbon under two product lines — Goldsorb and PICAGOLD. The table below maps every Jacobi model to its matched HojeeGold alternative, so you can quickly find your current grade and the direct replacement. All Jacobi figures come from published datasheets; HojeeGold figures are from SGS test reports.

HojeeGold CG31 / CG32 / CG33 / CG35 cover an iodine number of 1000–1200 mg/g (CTC 45–65), matched to Jacobi's CTC 45 / 55 / 60 tiers respectively. All are coconut-shell CIP/CIL grades at the same mesh, so each is a drop-in alternative in the same circuit.

2. Head-to-Head Specification Table

The table below puts the CTC 60 tier side by side — the flagship Jacobi grades (Goldsorb 6000 / PICAGOLD G210AS) against their HojeeGold CG35 match. Every number comes from the manufacturer's published datasheet or, for HojeeGold, the SGS test report. CG31 (vs CTC 45) and CG32 (vs CTC 55) follow the same spec pattern at their respective activity levels.

Honest note on strength: HojeeGold's 98.2% is measured by the Chinese GB/T standard, while the Jacobi ≥99% is a Ball Pan hardness figure. These two methods use different test principles (compression vs tumbling), so the numbers are not directly comparable. If hardness is a decisive factor for your mine, ask both suppliers for results under the same method — or run your own attrition test.

3. Iodine Number and Ash Content — What the SGS Numbers Tell You

Iodine number is a proxy for micropore surface area — for coconut shell activated carbon used in gold recovery, an iodine number in the 1000–1200 mg/g range (CTC 45–65) indicates a well-developed micropore structure capable of adsorbing the gold-cyanide complex.

• HojeeGold CG31 / CG32 / CG33 / CG35: iodine 1000–1200 mg/g, CTC 45–65 (SGS verified) — covering the entry to high-activity tiers most mines require. The SGS certificate travels with the shipment.
• G210AS: Jacobi specifies its PICAGOLD grades primarily by K value and R value rather than headline iodine. As a fully activated coconut shell carbon, it meets the micropore standard expected for gold adsorption.

Ash occupies pore volume that should be adsorbing gold. HojeeGold CG35's 2.52% ash (SGS) sits well below G210AS's ≤4% ceiling — that means more effective surface per gram for actual gold loading.

4. K Value and R Value — Gold Loading Performance

For any gold recovery carbon, every other spec ultimately serves one thing: how much gold it loads and how fast.

• K value (loading capacity): grams of gold per ton of carbon at equilibrium — higher K means less carbon consumed per ounce recovered.
• R value (adsorption rate): how fast the carbon reaches loading equilibrium — faster R means a more efficient CIL circuit and shorter contact time.

Jacobi publishes its PICAGOLD line in a graded K/R ladder:

The HojeeGold CG31 / CG32 / CG33 / CG35 series delivers K 26–32 kg/t and R 50–60% across three matched tiers. Each grade meets or exceeds its corresponding Jacobi model's published K/R — putting HojeeGold in the same performance band at a more competitive price point. For a comparison with the flagship G210 Ultima, see our Jacobi PICAGOLD G210 Ultima vs HojeeGold guide.

5. Strength and Hardness — An Honest Look

Carbon inside a CIL tank faces constant mechanical agitation. Low hardness means more breakage, more fines, and more gold escaping with the tailings. Every percent of extra fines is gold walking out the back door.

• HojeeGold CG31 / CG32 / CG33 / CG35: ~98% strength by the Chinese GB/T standard (a compression-based method).
• G210AS: ≥99% hardness by Ball Pan (a tumbling/abrasion method per ASTM D3802).

Why you cannot compare these directly: GB/T strength and Ball Pan hardness measure different physical properties — compression resistance vs abrasion resistance. A carbon scoring 98% under one test may well score 99% under the other. Making a strength superiority claim between these two numbers would be misleading, and we won't do it.

Our recommendation: if hardness is a key criterion for your tender, request both suppliers to test under the same method (ASTM D3802 Ball Pan or GB/T 12496.6), or run a rolling-bottle attrition test on your own. That gives you a true apples-to-apples comparison.

6. Attrition and Platelets — Data Pending (Transparency)

Jacobi publishes attrition (<1.0%, rolling bottle) and platelets (<4%) for the G210AS grade. These are valuable specs — low attrition means less carbon loss in the CIL circuit, and low platelets mean fewer flat grains that screen poorly.

For the HojeeGold CG31 / CG32 / CG33 / CG35 series, attrition and platelet data are currently being finalized. Rather than estimate or borrow comparable numbers, we mark them as "data pending" — because publishing only verified, measured data is a baseline for trust. Once the test results are in, this article will be updated.

If these metrics matter for your tender, ask HojeeCarb for the latest test status, or request matched samples and run your own attrition test.

7. Cost and Supply — Why HojeeGold Is a Practical Alternative

Jacobi Carbons (part of Osaka Gas Chemicals) is a global premium brand — its pricing reflects the brand's position, global distribution network, and quality infrastructure. That premium is justified for many buyers.

The HojeeGold series is positioned differently: comparable performance at a more competitive price. For mines running hundreds of tons per year, even a modest per-ton price difference adds up to a meaningful budget saving — without sacrificing the gold-loading performance your circuit needs.

• Direct factory pricing: No middlemen. HojeeGold ships from the factory to your mine with transparent pricing and no distributor markup.
• Proven export logistics: Jumbo bags in 40'HC containers, full documentation (COA, SGS certificate, packing list, B/L), destination-port delivery worldwide.
• Batch consistency: Same feedstock source, same activation process, same QC protocol — every shipment matches the spec sheet.

8. Where the Grades Sit in the Jacobi Gold Recovery Line

It helps to understand where each grade sits within the Jacobi product ladder — and which HojeeGold model matches:

• G208AS / Goldsorb 4500 (CTC 45, K 26, R 50%) — the entry grade → HojeeGold CG31
• G209AS / Goldsorb 5500 (CTC 55, K 28, R 55%) — the mid grade → HojeeGold CG32
• G210AS / Goldsorb 6000 (CTC 60, K 28–30, R 60%) — the standard workhorse grade → HojeeGold CG35
• G210 Ultima (K 30, R 60%, attrition <0.7%) — the flagship premium grade. See our dedicated G210 Ultima comparison for details.

The HojeeGold CG31 / CG32 / CG33 / CG35 series spans the full G208AS–G210AS range grade-for-grade — making it a versatile alternative for mines currently buying any standard Jacobi Goldsorb or PICAGOLD grade.

9. Summary — When to Switch to a HojeeGold Alternative

Consider HojeeGold if: you currently run any Jacobi Goldsorb or PICAGOLD grade and want to reduce your carbon budget without changing your circuit or risking gold recovery. CG31 / CG32 / CG33 / CG35 are drop-in alternatives at the same mesh with matching K/R performance, verified by SGS, and priced for cost-sensitive operations.

Stick with Jacobi if: your tender specifically requires the Jacobi brand, or you need the published attrition and platelet data that HojeeGold has not yet finalized. Brand lock-in and complete spec sheets matter for some procurement processes.

The right way to settle any comparison is a side-by-side loading test on your own pulp. Request matched samples from both suppliers and run them under identical conditions — that is the only definitive answer.

Frequently Asked Questions

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