Bottom ash metal fractions: Maximum recovery from complex waste streams
Bottom ash metal fractions – the fine-mesh metal concentrates that remain after thermal processing in waste-to-energy plants (WTE) – are one of the most complex waste streams on the market. These fractions consist of a heterogeneous mix of non-ferrous metals and precious metal-containing alloys. Whereas standard smelters often struggle with the variable composition, GS Refinery BV guarantees optimal recovery results thanks to its specialist sorting expertise and advanced refining processes.
Why have complex bottom ash fractions processed by us?
The value of bottom ash metal is often hidden in microscopic inclusions and complex bimetals. Through our use of high-quality smelting and separation techniques:
- We recover every gram: We identify and refine the precious metals (Au, Ag, Pt, Pd) contained in the base metal.
- Achieve superior returns: Our processes are specifically designed to minimise processing losses of precious metals and maximise yield.
- Transparency in complex alloys: Through accurate sampling, we map out the exact composition of your heterogeneous fractions in order to arrive at the best processing plan.
High-quality refining and liquid extraction
Processing bottom ash metals requires a combination of mechanical sorting and chemical refining. Our process is designed to completely isolate the elements:
- Sorting optimisation: Thanks to our in-depth knowledge of residual fractions, we recognise and separate the most valuable concentrates.
- Thermal, physical and chemical processing: We break down the complex metal compounds to release the individual precious metals.
- Purification: Refining to industrial purity for direct reintroduction into the precious metal chain.
Who do we work for?
GS Refinery BV acts as the specialist partner for parties dealing with complex metal mixes:
- Incinerators: For the upgrading of non-ferrous concentrates.
- Metal separation companies: specialising in separating (precious) metals from non-ferrous concentrates.
- Metal recycling companies: Which relate to mixed fractions containing precious metals.
- Industrial companies: For the processing of complex process residues and ash residues.
Analysis and payment
In our advanced laboratory, we determine the exact contents of the various elements in your bottom ash fraction with extreme precision. Based on this detailed analysis, we draw up the final settlement. You can count on a transparent settlement, with the choice of immediate payment or crediting to your weight account.
