Koras GmbH products

Technological leader in the field of recycling systems. The new drum shape (rectangular) enables us to achieve a higher efficiency: The dissolving time of the gold is considerably reduced.

Compact, space-saving, modular system series. Capacity: 3 to 100 kg precious metal within 8 hours. Easy to expand due to modular design. Including agitator motors, heating, condensers, solvent containers in SCHOTT glass, precipitation and filter units, reservoir. Dissolving medium aqua regia ( HNO3 +HCL). The complete unit is located under an exhaust hood and in a drain tray. Acids and solutions are not conveyed through pressing but by suction (vacuum)

We developed the GRC Gold Recovery System especially to recover gold from grinding and polishing sludge, scraps, sweepings and ashes. As a matter of course the recovery of gold from solutions such as rinsing baths, polishing baths etc. is also possible.

This system uses a completely new refining process. There are three Pyrex glass reactors each with a volume of roughly 20 l, 50 l or 100 l. The special module integrates filter units, extraction hood and components made from special glass. On the glass reactors there are three glass condensers with reflux separators where the acid vapours are condensed. This considerably simplifies neutralisation of the fumes. A fur ther advantage is that the system can work overnight without super vision.

Electro-polishing is the most gentle and cleanest way to give jewelry pieces in an industrial production process a smooth, ultra-pure surface, which can then be further processed. Our Aqua-Pol® product lines achieve this very efficiently with precision and the system requires only a small amount of space. This is possible by its ingenious design with internal running rotors.

Electro-polishing is the most gentle and cleanest way to give jewellery pieces in an industrial production process a smooth, ultra-pure surface, which can then be further processed. The new Aqua-Pol® Picco system achieve this quickly and economically with precision and only requires a small amount of space. This is made possible by its ingenious design with internal running rotors.

Compounds (for wet grinding and polishing). Wet grinding paste. Plastic grinding chips (in different sizes and properties). Ceramic grinding chips (in different sizes and properties). Plastic polishing chips (for dry polishing and electrochemical processes). Walnut shell granulates for grinding and polishing (in different grain sizes). Ultrasonic cleaner .