Gold Refinery & Casting

Gold-Refinery-Casting-300x176(Since 1999, COOLDO specializes in accurate,verifiable,and transparent precious metal refining for many Chinese and overseas customers. We devoted to helping gold suppliers and jewelers to refine,recycle gold with safely and effectively way.
Our induction melting furnace offer you what you need to refine gold in any kind– whether its scrap gold, old gold jewelry, gold coin,gold from mining, prospecting or gold of any other type. Our gold melting furnace is suit for melting silver, platinum, ,palladium and any other precious metal.

Small capacity melting furnace recommendation as following:

1. Capacity 1-2kg: 3.8KW  desktop type mini gold melting furnace
2.Capacity 1-10kg:  integrated Type gold melting furnace
3.Capacity 1-10kg:  Manual Tilting Platinum melting furnace
4.Capacity 10-20kg:  Motor Chain Tilting Precious Metal Melting Furnace
5.Capacity 20-30kg: Automatic Motor Tilting Gold Melting Furnace
6.Capacity 50kg and above:Hydraulic Tilting Gold Smelting Furnace For Gold Concentrate

XRF-Gold Testing Machine:

1: Accuracy 99.9-99.99, which is  highly accurate to determine gold concentration in gold,jewelry,precious metal alloy and any other metal samples

Cooldo Gold Melting Furnace are mainly based on IGBT technology which are very popular in the jewelry making industry&gold refinery industry with their obvious features of fast melting, ease of operation and low loss maintenance. Our gold melting furnace equipped with multi-protective function, such as over-voltage protection, over current, over heating, less water protection, etc. Low fault rate, safe and reliable which can make the whole operation more smooth and safety.

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This type gold smelting furnace is specially designed with Temperature Control System,with the help of our PID Temp Controller, you can accurately control the working temperature of the whole melting process, our Temperature control error can be around 5 degree.With their low cost of ownership and maintenance, they are the most popular and reliable machines in the university lab and jewelry.

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This Type of Gold Melting Machine is deigned for small capacity melting 1-10kg, it is non-tilting type, which need to pick up by the crucible by tong, Based on the latest and most advanced IGBT technology which can gurantee the quality of the machine, the top speedy melting could be realized within 2-4 minutes. and our machine can working 24 hours per day.This is best choice for your gold shop and test for the mining.

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Coold Silver melting furnace with motor tilting system is designed for 30-50kg. which is suitable for melting and making the precious metal ingot like gold,silver,copper etc. With speedy melting period in 3-5min per batch gained popular in market. When melting process is done, you just press the tilting button, the furnace body will turn over by the motor running.

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Precious Metal Vacuum casting machine is designed for those ingot casting of gold, silve or other precious metal on basis of the customized mould. In the process of metal heating, The machine can vacumm pumping or inert gas inflate to make the gold or silver ingot surface looks more bright and smoothy, and without any oxidized or other loss.
Approaching each project as a partnership, the goal of COOLDO is to share the customer’s vision to produce the best for the your application.

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Metal continuous casting machine is designed for those need special shaping products of precious metal like sheet pull, tube pull, wire pull etc on basis the mould you have. The machine have the argon gas protection which can prevent metal oxidization and loss. The end products draw out is down pulling direction, and this method adopt can let the products reach more further length.

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Cooldo Benchtop XRF gold tester with best precision levels and reasonable price. XRF testing way is non-destructive and don't need to prepare special samples.It only take couple of minutes for the whole testing,fast with high precision.All liquid,solid and powder samples are workable. XRF spectrometer will help to control production line and maximally reduce the lost, it also can inspect Jewelry's quality.The traditional testing methods(such as fire assay and chemical ways)are not only ruinous but also take long time to prepaere samples.

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