Precious Metal Processing Equipment

Equipment for Melting, Granulation and Casting
COOLDO supplies induction-based equipment for processing gold, silver, platinum, palladium, copper and precious-metal alloys. Each system is selected around the incoming material, required final product, batch weight, operating temperature and daily production target—not capacity alone.
This range is designed for refineries, bullion producers, jewelry manufacturers, recycling plants, laboratories and metal-processing workshops. Our engineering scope can coordinate the furnace, crucible and mold arrangement, pouring method, cooling-water system, inert-gas connection, temperature measurement, electrical configuration and operator controls.
Need a technical proposal? Send us your feed material, target product, batch weight, daily output, available voltage and destination country. We will recommend a suitable configuration and identify the utilities required before installation.
Choose the Right System by Process and Final Product
Induction melting and controlled pouring
For clean metal, alloy preparation and remelting, choose an induction melting furnace according to the metal, batch capacity and pouring method. Compact integrated furnaces suit small batches. Manual, motor-driven or hydraulic tilting systems are more practical when the melt must be transferred safely into molds or downstream equipment.
Metal granulation for sampling and further processing
A metal granulator combines controlled melting with discharge through a perforated crucible or nozzle into a water tank. The process produces manageable grains that are easier to sample, dissolve, meter or remelt. Vacuum or inert-gas configurations can be considered when oxidation control is important for the alloy.
Vacuum-pressure casting for jewelry and detailed parts
Vacuum-pressure casting is used when molten metal must fill detailed investment molds with fewer trapped gases and consistent results. Model selection depends on flask dimensions, alloy, metal weight, casting temperature, vacuum level and the required degree of automation.
Continuous casting for rod, strip, tube and profiles
Continuous casting systems combine induction melting, a controlled cooling die and programmed withdrawal. Die geometry and pulling settings are configured around the required semi-finished product. Gold, silver, copper and compatible alloys can be produced as rod, strip, tube or custom profiles for later rolling, drawing or machining.
High-temperature melting for platinum-group metals
Platinum and palladium require a high-temperature system matched to the crucible, refractory components and temperature-measurement method. COOLDO configures the power supply, crucible type, cooling circuit and pouring arrangement around the metal and required batch capacity.
XRF screening and production quality control
An XRF analyzer provides rapid, non-destructive screening of precious-metal composition. It is useful for incoming-material checks, alloy verification and production quality control. XRF is a screening tool; final commercial settlement or certified purity may still require an approved laboratory method.
How COOLDO Configures a Production Cell

Feed material: clean bullion, jewelry scrap, production return, sponge metal, grains or prepared alloy.
Final product: ingot, grain, jewelry casting, anode plate, rod, strip, tube or another semi-finished shape.
Throughput: batch weight, melting time, holding time, pouring and cooling time, changeover and number of shifts.
Plant utilities: voltage, phase and frequency; cooling-water flow and temperature; protective gas; exhaust; floor space and lifting requirements.
Automation: manual controls, motorized or hydraulic tilting, PLC recipes, programmed withdrawal and recorded process parameters.

Where Refining Fits into the Process
Melting, granulation and casting change the physical form of a metal; they do not by themselves remove all chemical impurities. A complete precious-metal workflow may include sampling, granulation, chemical or electrolytic refining, washing and drying, final melting, casting and composition verification.
For a detailed explanation of when aqua regia processing or gold electrolysis is appropriate, see CDOCAST’s technical guide to gold refinery machines and process selection. COOLDO can then configure the induction melting, granulation, casting, cooling and material-handling stages around the selected process.
Information Required for an Equipment Proposal

feed metal and approximate composition;
final product, shape and dimensions;
batch weight and required daily output;
available voltage, phase and frequency;
preferred pouring or casting method;
cooling-water and protective-gas availability;
required automation level and destination country;
process flow, drawings or reference photos when available.

Frequently Asked Questions
Is a gold melting furnace the same as a gold refining machine?
No. A melting furnace heats metal for alloying, pouring or casting. Refining removes impurities through chemical, electrolytic or other separation processes. A refinery may use an induction furnace before refining to prepare feed and after refining to cast the recovered metal.
How do I choose between an integrated and a tilting furnace?
Choose by batch weight, crucible handling, mold position, pouring frequency and operator-safety requirements. Integrated units are compact for smaller batches. Tilting systems are more convenient when the crucible should remain inside the furnace during pouring or when the melt is too heavy for manual handling.
Why is silver capacity different from gold capacity in the same crucible?
The displayed mass depends on metal density and usable crucible volume. A crucible that holds a stated weight of gold normally holds a lower weight of silver or copper. Model selection must therefore use the actual metal rather than one headline capacity.
Can one furnace melt gold, silver, copper and platinum?
Not automatically. Gold, silver and copper alloys may share some equipment when the power supply, crucible and temperature range are suitable. Platinum-group metals require higher temperatures and different crucible and measurement arrangements. Cross-contamination must also be considered.
Can COOLDO supply an integrated line instead of one machine?
Yes. A proposal can coordinate melting, granulation, casting, cooling, gas connections, molds or dies, controls and material handling. The final scope is confirmed after reviewing the feed, finished product, required output and plant utilities.