The quality demands on concrete products such as paving stones and bricks are constantly rising. The rising energy prices and the shortage of raw materials also concern the concrete industry. In order to save resources during production and to make production efficiently, the concrete specialist Hans Mutzel Bauunternehmung GmbH from Unterallgäu in Germany has opted for the Eirich mixing technology. The new plant has been up and running since March 2022.

Eirich has been known for its unique and efficient mixing technology for over 110 years. Also in the concrete industry, many manufacturers rely on the Eirich mixer. One of these is the family-owned company Mutzel, which has been producing concrete goods and precast concrete components using raw materials sourced from the region for over 120 years. Mutzel recently decided to modernize its own production facility, and is now using two Eirich mixers.

Eirich Intensive mixer RV12 500

Paving stones usually consist of two different concrete layers – the facing concrete (mixer 1), which is designed to provide a visually appealing surface and is used to create the shape/design of the surface, and the coarse concrete underneath (mixer 2), which is responsible for the strength and stability of the stones.

The processing of facing concrete is very challenging, as flaws, defects, or lower-quality mixing quality in the facing concrete will mean rejection in production. Thanks to the new Eirich mixer, this level of rejections in production has now been reduced by more than 50%. A uniform, homogeneous mixture forms the basis for a good bond between the facing concrete and the coarse concrete. In addition, it was found that the uniform processing also allows more water to be added to the mixture, which results in increased strength and stability of the stone. The shorter batch processing times lead to higher throughput rates – with high reproducibility. The improved fine distribution in the mixture, concrete specialists can also make savings in terms of coloring agents and binders. Many manufacturers, therefore, rely on the technology from Eirich.

“In recent times, the industry has been struggling with resource scarcity and is constantly on the lookout for sustainable technologies that will help them to save resources. In addition, quality demands are steadily rising in the concrete industry. We are delighted that Mutzel has decided to choose our efficient Eirich mixing technology,” said Stefan Berberich, Project Engineer at Eirich,

“As a long-standing company with a great tradition and a specialist in the concrete industry, we are always on the lookout for new solutions that will enable us to offer our customers the best-possible quality. Here, the primary focus is on sustainability and efficiency. With Eirich mixing technology we can do all of this. We are incredibly delighted to be working with Eirich,” said Mutzel CEO Christian Mutzel.

As a global leading manufacturer of machinery and systems for the preparation of raw materials, since 1863 Eirich has been pioneering advanced technology for mixing, granulating, dispersing, kneading, reacting, temperature control, and fine grinding. Under the brand label Eirich digital, the group of companies offers numerous services covering the entire lifecycle of lines and systems, ranging from online ordering of spare parts to AI-based  assistance systems.

With more than 400 patents to its name, Eirich is one of the major driving forces of innovation in mixing and preparation technology. Under the leadership of Stephan Eirich and Ralf Rohmann, the company is now in its fifth generation of family ownership and employs around 1,200 people at 13 sites in 11 countries.