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Precious metal refining

In an era of increasingly scarce resources, there is an urgent need for sustainable and resource-efficient approaches to the recovery and reuse of all types of recyclable and residual materials. Because of their high value, the recovery of precious metals plays a particularly important role in this context.

As residues from industrial and other processes, the precious metals to be recovered are present in a wide variety of composite materials. They therefore require multi-stage processing, which must be designed according to the feed material and the purity level to be achieved. The input materials, also called “Gekrätz” in German (process residues from precious metal processing), are typically associated with combustible organic substances, meaning that the first processing stage requires an incineration furnace for mineralisation, followed by flue-gas cleaning.

With this in mind, RUPPMANN has continuously optimised a self-developed technology for the incineration of process residues arising from precious metal processing. Moreover, RUPPMANN adapted this technology to each new field of application. The particular focus is on:

• A furnace design tailored to the product range
• High economic efficiency through minimal losses of precious metals
• Maximum environmental protection in compliance with the limits specified in the 17th BlmSchV