Coconut shell activated carbon
Granular Coconut Shell Activated Carbon for Gold Cleaning
Hard, low-ash granular coconut shell activated carbon for gold cleaning circuits, supplied to Asian buyers with iodine value, hardness and mesh size confirmed per batch before quotation.
Sample first; mesh size and batch values confirmed before the order
- Iodine value
- 900 – 1600 mg/g
- Methylene blue adsorption
- ≥ 135 mg/g
DESCRIPTION
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Granular coconut shell activated carbon is a hard, low-ash grade used in gold cleaning circuits, where activated carbon captures gold-cyanide complexes from pregnant leach solution and the loaded carbon is later stripped and regenerated. The granular form is built for fixed beds and columns, so the carbon must hold its shape through repeated adsorption, elution, acid washing and thermal regeneration cycles without breaking down into fines.
This grade is screened to a defined particle size, which supports even flow distribution, predictable pressure drop and controlled residence time in the adsorption column. Because the feed and operating conditions of a gold cleaning circuit vary from plant to plant, mesh size is confirmed per order so the carbon matches the column design and the pumping or gravity flow arrangement in use.
Beyond gold recovery, the same granular coconut shell grade is used for drinking water, point-of-use cartridges, beverage processing and solvent recovery. Buyers comparing options usually weigh three things: hardness, which decides how long the carbon survives regeneration; ash content, which affects the purity of the treated stream; and adsorption capacity, which sets the carbon dosage and the cycle length. The reference values in the specification table below sit inside the coconut shell granular series range and are confirmed on the batch sample before quotation.
Samples are available so the grade can be tested against the actual liquor or water before a full order is placed. To request a quote, share the intended duty, the required mesh size and the target volume, and the batch values and packing options can be confirmed in return.
SPECIFICATIONS
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Granular coconut shell activated carbon, screened for fixed beds and columns, with the hardness needed to withstand repeated regeneration. Gold cleaning is a primary duty; the grade also suits drinking water, point-of-use cartridges, beverage processing and solvent recovery. The values below are series reference values and are confirmed on the batch sample before quotation.
| Iodine value | 900 – 1600 mg/g |
|---|---|
| Methylene blue adsorption | ≥ 135 mg/g |
| BET surface area | 950 – 1200 m²/g |
| CTC adsorption | ≥ 40 % |
| Ash content | ≤ 5 % |
| Moisture | ≤ 10 % |
| Hardness | ≥ 95 % |
| Bulk density | 0.45 – 0.55 g/cm³ |
| pH value | 6.5 – 8.5 |
| Particle size | 4 – 40 目 |
| Heavy metals (food grade) | ≤ 10 ppm |
ADVANTAGES
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Why this grade is selected for gold cleaning and repeated-cycle duty.
Hardness that survives regeneration
A high hardness reference value supports the granular structure through repeated adsorption, elution and regeneration steps, limiting attrition and fines generation in the column.
Durability
PACKAGING
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Bulk packing options for granular activated carbon shipped to Asian markets.
PROCESS
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Typical sequence when this grade is used in a gold cleaning circuit.
1. Confirm the duty and mesh size
Review the feed, flow rate and column design, then agree the mesh size and the specification values that apply to the batch before shipment.
2. Receive and verify the batch sample
Check the batch sample against the confirmed values for iodine value, hardness, ash content and particle size before releasing the bulk order.
3. Load the adsorption column
Charge the granular carbon into the fixed bed or column, taking care to avoid mechanical damage during handling and filling.
4. Adsorb in the gold cleaning circuit
Pass the gold-bearing solution through the carbon bed under the agreed operating conditions so the gold-cyanide complexes are captured on the carbon.
5. Elute and regenerate
Strip the loaded carbon and regenerate it, then repeat the adsorption cycle for as long as hardness and capacity remain within the working limits.
6. Replace on measured performance
Track capacity and fines build-up, and replace the carbon when adsorption performance or pressure drop falls outside the operating target.
DIMENSIONS
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Classified by form, application and precursor material so buyers can match the grade to the duty.
Product form
Granular activated carbon
Granular media for fixed-bed adsorption and filtration. Compare particle size, pressure drop and handling needs.
Application
Food, beverage and refining
Decolourisation and purification in sugar, syrup, edible oil and beverage processing, where colour bodies and off-flavours have to be removed.
Material
Coconut shell activated carbon
A hard, microporous carbon with the highest hardness of the common precursors, widely used for drinking water and point-of-use cartridges.
FAQ
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Common questions from buyers evaluating granular coconut shell activated carbon for gold cleaning.
Which mesh size should I choose for gold cleaning?
The mesh size should match the column design and the flow regime. Finer granule sizes generally give faster adsorption kinetics but a higher pressure drop, while coarser sizes reduce pressure drop but can lengthen the contact time needed. Because the series covers a range of granule sizes, mesh size is confirmed per order against your column and flow arrangement; a sample can be tested before the order is fixed.
Are the values in the specification table guaranteed for my shipment?
The values shown are reference values from the coconut shell granular series range. The values that apply to a delivered lot are measured on the batch sample and confirmed in writing before quotation and before the order is fixed, so the quotation reflects the grade actually being supplied.
How do I test the carbon before ordering in bulk?
Request a sample and run it under conditions close to your own duty, checking adsorption performance, pressure drop and fines behaviour. Supplier qualification reviews can then be completed against the batch data that accompanies the sample.
Can this grade be regenerated and reused?
Granular coconut shell carbon is normally used in multi-cycle service with elution and regeneration, and hardness is the main property governing how well it withstands that treatment. The reference hardness value supports repeated cycles, but usable life still depends on the actual operating conditions, so performance should be tracked in the plant.
What information do you need to quote?
Share the intended duty, the required mesh size, the expected volume and the destination port. With those details the batch values, packing format and shipping arrangement can be confirmed and returned as a quotation.
RELATED ARTICLES
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