03.03.2020 Nomination of UrbanGold for the Houska Award

We sincerely congratulate UrbanGold on its nomination for the Houska Award 2020.

The project "Boosting E-Waste Recycling" of UrbanGold could qualify in the category "Research & Development in SMEs" as one of five nominated projects for the final of the Houska Award ceremony.

Since its introduction in 2005, the Houska Award has become a fixed point in the Austrian research landscape. With this research promotion prize, the B&C Private Foundation is committed to improving the financial basis for innovation and research in Austria and thus – in accordance with its foundation's purpose – to strengthen Austria as a business location in the long term.

Link to the Houska Award: 

Link to UrbanGold: 


Implementation of a parallel flow device in a pickling tank

In September 2018, a new and innovative approach to the use of the parallel flow device (PFD) was implemented at voestalpine BÖHLER Bleche GmbH & Co KG in Mürzzuschlag, Austria. Altogether, the installation comprises of three elements for improving the performance in the pickling tank and saving hydrofluoric acid.

For a better movement and thus optimised kinetics of the pickling process, the acid circulates through a series of nozzles via a parallel flow device at the top end of the tank. This provides a perfectly guided flow to ensure a more homogeneous acid distribution.
In order to prevent the overheating of the acid, the steam injection is circumvented by the implementation of an instantaneous heating unit. This ensures a constant but adjustable temperature in the entire tank. 
As another benefit resulting from the circulation of the acid, a filtering unit is installed at the intake socket of the pump. This filtering unit can be removed and the suspended solids collected in the filter can be removed periodically.

The given drawing shows the assembly of the unit.

With the overall aim to save time for pickling, safe hydrofluoric acid by temperature control and filtering unit and safe costs by stop using the steam generator, we are convinced to set new standards in pickling units together with voestalpine BÖHLER Bleche GmbH & Co KG.


Mettop GmbH, founded in 2005, is an independent Austrian engineering company, specialised in the design, optimisation, and engineering of technologies for metallurgical processes. It is active in the field of pyro- as well as hydrometallurgy of non-ferrous metals and recently also started with innovative cooling systems for the iron and steel industry.

The scope of services comprises of optimisation solutions in the area of furnace integrity, combining refractory selection and layout, gas purging systems and cooling elements. In the field of hydrometallurgy, a new electrolysis technology - the METTOP-BRX Technology - was developed and is in operation to allow an acceleration of the electrolytic refining of up to 50 percent. For all metallurgical aggregates and equipment, Mettop developed the new and water-free cooling technology ILTEC, that uses an ionic liquid as cooling medium,  to create new pathways towards safe and efficient cooling for the entire metallurgical industry.

In addition, Mettop is internationally active in terms of technical consulting (process optimisation) and operator training for customers in the non-ferrous metals industry, and also assists in the optimisation of risk management in metallurgical plants. 

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                    Our Mission

Our innovative ideas and partly unconventional methods enable us to crush old crusts and set new standards. This means that we set the standard that others follow and achieve maximum added value for our customers. 

Motivated by the challenges of our customers, our employees succeed in impressing and inspiring our clients by implementing their projects. 

Together as a group at the Leoben site, we manage to design environmentally friendly and highly profitable recycling processes, as well as offering tailor-made solutions and process developments. 

Communication within the team is the key to mutual success.