A typical line may include melting, granulation or feed preparation, bar casting, cooling, weighing, surface finishing, logo stamping, inspection and blister packaging. The exact configuration depends on bar weight, required output, finish and whether the product is cast or minted.

Read the guide on how to make gold bars and bullion.

Aqua regia refining uses a chemical dissolution and recovery process and is commonly applied to gold-bearing feed. Electrolytic refining uses controlled electrochemical deposition and is widely used for silver and certain high-purity refining workflows. Feed composition, capacity, target purity, environmental controls and local regulations determine the appropriate process.

See our precious metal refining equipment.

Some melting, casting, rolling and minting equipment can process both metals after suitable cleaning, molds and parameter changes. Refining chemistry and contamination-control requirements may require dedicated tanks, crucibles, tooling or separate workflows. CDOCAST evaluates the complete process before confirming shared equipment.

XRF provides fast, non-destructive elemental analysis of the tested surface. Accuracy depends on detector type, calibration, sample geometry, testing time and reference standards. Plating or a non-uniform sample can make surface composition different from the bulk material, so suspicious items may require additional testing.

Compare our XRF gold analyzers.

Control starts with correct temperature, clean crucibles and molds, suitable atmosphere, repeatable weighing, documented parameters and proper recovery of residues. Equipment should be matched to the batch size and production method. No machine can eliminate every process loss, but a controlled workflow can reduce avoidable loss and variation.

CDOCAST provides manuals, operation guidance and remote technical support. On-site installation or commissioning can be arranged for eligible production-line projects. The scope, travel conditions and local responsibilities should be confirmed before shipment.

Preparation may include electrical supply, grounding, cooling water, compressed air, ventilation or exhaust, foundation, lifting equipment and suitable working space. Requirements differ by machine; follow the approved layout and utility list supplied for the project.

Yes. CDOCAST can supply model-specific spare parts and remote fault diagnosis. Keep the machine nameplate, serial number, photos, alarm information and operating conditions available when requesting support so the issue can be identified efficiently.

Maintenance frequency depends on operating hours, environment and machine type. Operators should routinely inspect cooling, electrical connections, vacuum oil, hydraulic oil, seals, filters, crucibles, molds and safety devices where applicable. Use the maintenance schedule provided with the equipment.