Together for the circular economy

A success story of recycling

The “Closing the Loop” cooperation project between Aurubis AG and GRILLO-Werke AG is an impressive case study of successful recycling management in the chemical industry. This cooperation saves resources by efficiently recycling valuable metals such as copper and zinc.


The “Closing the Loop” approach between Aurubis AG, as an expert in multi-metal recycling, and GRILLO-Werke AG, as a specialist in zinc chemistry, ensures a verifiable, complete recycling loop for copper, zinc and other valuable metals with the best available technology.

The recycling process at Aurubis AG produces copper cathodes from recycling raw materials. GRILLO-Werke use the zinc-rich oxide produced in the process as a raw material for the production of zinc sulphate. When GRILLO processes the filter dust into zinc sulphate, a residue accumulates that contains other valuable ingredients such as copper, tin and lead in an enriched form. Aurubis AG takes back this residue, recovers the metals as products and thus closes the recycling loop.

Further topics


Together for a liveable and sustainable future

At GRILLO, we are convinced that sustainability is not a trend, but a necessity. We therefore aim to continuously improve our processes and products and make a positive impact on the environment and society. We rely on sustainable solutions such as ECO ZINC, a circular economy and CO2 reduced production to make our contribution to climate protection and create a future worth living.

Service & advice

We stand out in the industry due to our expertise and innovative strength. We offer tailor-made solutions thanks to our many years of experience in the production and development of chemical specialities and zinc products. We are keeping track with state-of-the-art technology through our own research facility and various cooperation projects. Our customers appreciate not only the quality of our products, but also our fast delivery and excellent customer service.

GRILLO media library: find out more!

From technical data sheets to detailed presentations and press articles – in our media library you will find all the details about our products and solutions for download.


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