Jacobi vs SunCarb vs HMGOLD: Gold Carbon Compared (2026)

If you're comparing activated carbon brands for your gold CIP or CIL plant, you've probably narrowed it down to a few names: Jacobi, SunCarb, and a growing list of Chinese manufacturers.

This article breaks down the real differences between Jacobi GoldSorb, SunCarb-Gold, and HMGOLD™ from Huamei Carbon — not marketing claims, but verified specs, operational trade-offs, and total cost of ownership.

Quick Specs Comparison

Parameter Jacobi GoldSorb 610C SunCarb-Gold HMGOLD™7000
Raw Material Coconut shell Coconut shell Coconut shell
Iodine Number 1050+ mg/g (claimed) 950-1050 mg/g (claimed) 1208 mg/g (SGS verified)
Hardness/Strength 97%+ (claimed) 95-96% (claimed) 98.2% (SGS verified)
Ash Content ≤3% ≤5% 2.52% (SGS verified)
Moisture ≤5% ≤5% 5.0% (SGS verified)
Available Mesh 6x12, 8x16 6x12, 8x16 6x12, 8x16, 5x10
Reactivation Cycles 8-12 5-8 10-15
Origin Sweden/Sri Lanka India China (Fujian)
Third-Party Certification ISO Varies SGS Report No. MSRCZ2500346-01A
Lead Time to Africa 4-6 weeks 2-3 weeks 2-3 weeks
MOQ 20 tons 10 tons 10 tons

SGS testing report (Report No. MSRCZ2500346-01A) for Huamei coconut shell activated carbon showing iodine adsorption 1208 mg/g, moisture 5.0%, ash 2.52%, pH 10.0, strength 98.2%, with inset photo of granular carbon sample — tested per GB/T 12496 standards

The Iodine Value Trap: Why Some "High-Spec" Carbon Fails in Practice

Here's something most carbon salespeople won't tell you: a higher iodine number does not guarantee better gold recovery.

Iodine value measures total micropore volume using a small molecule (iodine, 0.27nm). Gold cyanide complexes are much larger (~0.6nm). A carbon with excellent iodine numbers might have the wrong pore size distribution for gold — plenty of micropores, but not enough mesopores where gold actually loads.

What this means for your operation:

This is why you see cases where a "lower spec" carbon outperforms a "higher spec" one in actual plant conditions. The only way to know for sure is to run a plant trial — which is why we provide free samples for testing before any order.

Jacobi GoldSorb: The Premium Standard

What they do well:

Jacobi Carbons (now part of Osaka Gas Chemicals) has been in the gold carbon business for decades. Their GoldSorb and PICAGOLD lines are considered the industry benchmark in many large-scale operations.

The trade-offs:

Best suited for: Large publicly-listed mining companies with strict vendor compliance requirements and budgets that prioritize brand name over cost optimization.

SunCarb-Gold: The Budget Option

What they do well:

SunCarb (Suneeta Carbons) offers a lower entry price point, making it accessible for smaller operations or pilot projects.

The trade-offs:

Best suited for: Small-scale miners, trial operations, or projects with extreme budget constraints where upfront cost is the only factor.

Huamei Activated Carbon warehouse with orange 25kg bags of premium activated carbon stacked for shipment (left) and close-up of HMGOLD™ coconut shell activated carbon granules held in hand showing sharp angular particles (right)

HMGOLD™: Factory-Direct Performance

HMGOLD™ is Huamei Carbon's dedicated gold recovery product line, manufactured from premium coconut shell charcoal through steam activation. Available in four grades: HMGOLD™6000, 7000, 7500, and PLUS.

Verified performance (SGS Report No. MSRCZ2500346-01A):

Why these numbers matter for your gold recovery:

  1. High hardness (98.2%) = less gold loss. Every percent of carbon that breaks into fines during CIP screening carries adsorbed gold past your recovery screens. The difference between 95% and 98% hardness over a year of operation can mean kilograms of gold lost to tailings.
  2. High iodine (1208 mg/g) with optimized pore structure = faster loading. HMGOLD is specifically engineered for gold cyanide complexes, not just high iodine scores.
  3. Low ash (2.52%) = cleaner elution. Less inorganic residue means more efficient gold stripping and higher purity final product.
  4. 10-15 reactivation cycles before replacement — 2-3x more than budget alternatives.

Operational advantages:

The Real Cost: Carbon Price vs. Gold Lost

The cheapest carbon per ton is rarely the cheapest carbon per ounce of gold recovered. Here's how to think about total cost:

Total Operating Cost = Carbon Purchase + Gold Loss to Fines + Replacement Frequency

Example: Processing 50,000 tons of ore per year

Cost Factor Premium Brand Budget Brand HMGOLD™
Replacement frequency Every 10-12 cycles Every 5-8 cycles Every 10-15 cycles
Annual carbon consumption Lower Higher (2x) Lowest
Gold loss to fines (hardness-related) Low High Low
Elution efficiency High Medium High
Estimated total cost High Medium-High Lowest

The math is simple: spending 20-30% more on better carbon that lasts twice as long and loses less gold is always cheaper than buying "cheap" carbon twice as often while losing gold to tailings.

What Operations Are Switching To

In the past two years, we've seen a clear trend: established gold mining operations across Africa, Central Asia, and South America are diversifying away from single European suppliers.

The reasons are consistent:

Recent HMGOLD shipments include 112 tons to a Tanzanian CIL plant, 56 tons to a Ghanaian CIP operation, and multiple repeat orders to mines in Sudan, Niger, and Egypt.

Get Free Samples for Your Plant Trial

The only way to truly compare activated carbon performance is to test it in your actual ore and process conditions. Lab specs matter, but plant results matter more.

We offer:

How to request:

Tell us your ore type, processing method (CIP/CIL/CIC), current carbon brand, and monthly consumption. We'll recommend the right grade and ship samples within 1 business days.

Huamei Carbon is an activated carbon manufacturer based in China with 700+ tons monthly capacity. HMGOLD™ is our dedicated product line for gold recovery applications, serving mines in 40+ countries.

Activated Carbon for Gold Recovery: A Practical Buyer's Guide (2026)

This guide covers what you need to know when sourcing activated carbon for gold recovery — specifications, grades, pricing and purchase checks.

How Activated Carbon Works in Gold Recovery

Activated carbon adsorbs gold-cyanide complexes [Au(CN)₂]⁻ from solution. The contact arrangement differs between carbon-in-leach (CIL), carbon-in-pulp (CIP) and carbon-in-column (CIC) circuits:

Process Brief description Information for selection
CIL (Carbon-in-Leach) Carbon contacts slurry during leaching. Current carbon, slurry conditions, screens and operating concerns.
CIP (Carbon-in-Pulp) Carbon contacts pulp after leaching. Current carbon, adsorption conditions and performance concerns.
CIC (Carbon-in-Column) Dissolved gold is recovered using carbon columns. Solution conditions, flow, column or bed arrangement and current media.

Loaded carbon undergoes elution to remove adsorbed gold. Thermal reactivation is a separate step used to restore carbon for reuse. Contact conditions and recovery depend on the circuit; the process name alone does not specify a contact time or recovery percentage.

Key Specifications for Gold Recovery Carbon

Review gold recovery carbon specifications for the actual grade under evaluation. A generic gold-grade or water-treatment label does not define a universal specification.

Parameter What it helps evaluate What to verify
Gold adsorption Loading capacity and adsorption kinetics. Method, units, solution and test conditions.
Mechanical performance Resistance to particle degradation. Method, fines and relevant plant evaluation.
Particle size Screen and equipment compatibility. Sieve system and particle-size distribution.
Iodine number Supporting product characterization. Method and grade; not a gold-performance guarantee.
Ash and moisture Consistency and specification compliance. Method, basis and batch result.
Apparent density Loading calculations and consistency. Method, reporting basis and agreed grade specification.

A water-treatment label alone neither qualifies nor disqualifies a carbon for a gold circuit. Assess the actual grade and relevant test results.

Evaluate gold adsorption and mechanical performance together

Gold loading capacity and adsorption kinetics describe different aspects of performance. Compare results only when the test method, units and conditions are aligned. Iodine number is supporting information and does not replace a gold adsorption assessment.

For results reported as gold activity or a K value, request the definition, method, units and test conditions. Hardness and attrition are separate measurements; neither alone establishes plant carbon loss, gold loss or service life. Particle size also needs evaluation: for example, a 6×12 mesh label should be checked against the sieve system, full size distribution and retention screens.

Compare samples under aligned test conditions

Compare identified samples under aligned preparation and test conditions. Use the current operating carbon as a reference where available, and agree on acceptance criteria before testing. Laboratory results support selection but do not guarantee plant recovery or consumption.

Record sample identity, particle size, preparation, dry or wet basis, test solution, method, temperature, contact time and reference material.

Coconut Shell vs Coal-Based: Which One for Gold?

Coconut shell-based carbons are widely used in gold recovery, but raw material alone does not establish suitability. Compare the specific grades on gold adsorption performance, mechanical behaviour and particle size under relevant test conditions. A coal-based carbon alternative requires the same evaluation; do not select it solely on ore grade or a lower purchase price.

Compare the proposed grades using relevant adsorption and mechanical tests. An unqualified comparison of raw materials, prices or regeneration counts is not a substitute for evaluating the actual carbon.

Huamei activated carbon granules and bagged carbon loaded in a shipping container

How to Choose the Right Carbon for Your Operation

1. Your circuit type

For CIL and CIP, share the current carbon, slurry characteristics, screen openings, contact conditions and operating concerns. For CIC, provide solution conditions, flow, column or bed arrangement and the current media. Do not assign a universal hardness threshold from the process abbreviation.

2. Your ore and solution characteristics

Describe changes in feed and solution chemistry, potential fouling and the observed adsorption problem. If preg-robbing is suspected, review the circuit evidence with the responsible process team. Do not assume that a higher iodine number or an acid-washed label resolves the cause.

3. Your reactivation setup

Describe the existing elution and reactivation arrangements and how regenerated carbon is evaluated. Where reactivation is outsourced, include transport and handling in the assessment. Higher initial activity alone does not establish a longer operating life.

4. Price and total cost of ownership

Compare quotations on the same grade, specification, quantity, packaging and delivery terms. Check the quotation date and which transport and handling costs are included. For operating-cost comparisons, use plant-specific carbon consumption, reactivation and disposal data, together with any measured gold losses attributable to carbon. Avoid counting the same loss twice.

When requesting a price for gold recovery activated carbon, identify the grade, required tests, order quantity, packaging, delivery terms and destination. A current, clearly scoped quotation is more useful than a general price range without a date or specification.

Specifications We Supply for Gold Recovery

Huamei’s HMGOLD range includes HMGOLD6000, 7000, 7500 and PLUS. Request the TDS and batch documents for the grade under evaluation, and confirm the required particle size and acceptance tests before purchasing.

Confirm which documents and test results are available for the proposed grade and delivered batch. A sample report does not establish that every batch or every grade has been tested for the same properties.

For a supplier comparison, see the gold recovery carbon brands and suppliers guide. Compare the exact proposed grade and its evidence rather than brand names alone.

Common Problems and How to Avoid Them

Problem: Gold recovery dropping over time

Possible factors include changes in feed or solution conditions, carbon fouling, adsorption conditions and the condition of regenerated carbon. Review plant trends and compare relevant carbon samples with a defined reference using an agreed test method. Confirm the cause before changing the carbon or operating procedure.

Problem: High carbon attrition

Review the carbon grade and particle-size distribution together with screening, transfer and other handling conditions. Compare mechanical test results using the same method. Investigate where fines are generated rather than assuming that one hardness threshold will solve the problem.

Problem: Gold not stripping completely

Review the loaded-carbon condition, solution chemistry and elution operating records with the responsible process team. Evaluate the findings against the plant’s approved procedure and relevant supplier information. Do not apply a universal temperature or time adjustment from a purchasing guide.

Problem: Inconsistent quality between shipments

Compare batch identity, agreed specifications, sampling procedures and test methods before attributing the difference to the raw material. Review the batch documents and retained samples, and follow the agreed retesting and dispute-resolution procedure.

FAQ

What iodine number is best for gold recovery?

There is no single iodine number that establishes suitability for every gold circuit. Iodine number provides supporting information about the carbon, while gold adsorption capacity, adsorption kinetics, mechanical performance and particle size need separate evaluation. Review the specific grade, the test method and your operating requirements rather than treating an iodine value as a recovery guarantee.

How long does activated carbon last in a gold plant?

There is no universal service life or regeneration count. Carbon condition depends on the circuit, handling, fouling, elution and reactivation practices. Track particle degradation, relevant adsorption tests and plant performance over time. Elution and thermal reactivation are different steps, so their cycle counts should not be used interchangeably.

What's the difference between CIL and CIP carbon requirements?

CIL combines leaching and carbon adsorption, while CIP introduces carbon to pulp after leaching. Both require a grade suited to the actual adsorption and mechanical demands of the circuit. Assess the slurry, screening, contact conditions and operating concerns. Do not assign a universal hardness threshold or contact time solely from the process abbreviation.

Can I use the same carbon for gold and water treatment?

Application labels alone are not enough to decide. A carbon sold for water treatment should not be substituted without evaluating the specific grade against gold adsorption, mechanical and particle-size requirements. Compare relevant test data and agree on a trial or acceptance plan where needed. Suitability cannot be determined from iodine number or purchase price alone.

How do I test carbon quality when it arrives?

Check packaging, batch identification and supplied documents against the purchase agreement. Visual inspection is only an initial check. Use an agreed sampling and testing procedure for acceptance, retain samples where required and compare results using the specified methods. Confirm laboratory availability and turnaround rather than assuming a fixed testing time.

What to include in your quotation request

For an RFQ, include the current grade or specification, particle size, required tests and methods, quantity, packaging, delivery terms and destination. State the circuit type and operating concern. If replacing an existing product, provide its technical information for comparison.

Discuss your gold recovery carbon requirements

Send your current specification, circuit type, required tests, quantity and destination.

Request a Gold Recovery Carbon Quote →

Related reading: 84 Tons of Activated Carbon for Gold Recovery to Egypt · Choosing Activated Carbon for Water Treatment