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Quality & Process
Quality, Process & Dispatch Transparency
Coal quality cannot be managed by one number alone. Buyers should understand GCV basis, moisture, ash, size distribution, sampling method, loading process and dispatch documentation.
Parameters
Coal Quality Parameters Explained
| Parameter | Simple Explanation | Note |
|---|---|---|
| GCV | Heat value of coal on a specified basis. | Always check the basis: ARB, ADB or other report basis. |
| Moisture | Water content in coal. | Affects received heat and handling. |
| Ash | Residue after combustion. | Impacts disposal and plant operations. |
| Volatile matter | Material released as vapour/gas during heating. | Affects combustion behaviour. |
| Fixed carbon | Solid combustible portion after volatiles. | Used in coal characterisation. |
| Sulphur | Sulphur content. | Important for emissions and suitability. |
| Size distribution | Coal particle size mix. | Impacts feeding, burning and fines loss. |
Recommended Process
Dispute Avoidance, By Design
- Align grade and size expectation before order.
- Discuss sample and test basis where required.
- Confirm stock availability and dispatch timing.
- Document quantity, price basis, taxes/charges and delivery terms in the quotation.
- Use weighbridge and dispatch documents for truck-wise clarity.
- Resolve concerns with test basis and transaction documents — not verbal assumptions.
Published quality disclaimerAll coal specifications, quality values and size ranges on this website are indicative and subject to current stock, cargo, screening output, sampling method, laboratory basis, handling and agreed commercial terms. Final transaction quality, price and documentation are governed by the quotation, invoice, purchase order and agreed terms between buyer and seller.
Two Reports, Two Numbers?
Upload both — we’ll help you compare them on the same basis before you draw a commercial conclusion.
FAQ
Common Questions
Why can two coal reports show different GCV?
Reports may be on different bases, sampled differently or tested at different moisture conditions. Always compare on the same basis.
Can transport change the coal size?
Handling and transport can generate fines or breakage. This should be considered in size expectations.