Andritz built the world’s largest sludge dryer for the cement industry, in Karlstadt, Germany. The waste heat from the cement factory is used for drying, and the dried sludge is used as fuel in the factory. The entire mineral portion is integrated in the cement. Thus, the sludge is sustainably reused, leaving behind no waste.

The five HBF pressure filtration lines, each with 168 m²filter surface, supplied by Andritz to Alunorte do Brasil, Barcarena, Brazil were started up in 2007 and are in full operation. The plant dewaters over 700 m³ of bauxite suspension per hour, from between 50 and 60% to over 85% dry solids.

PROFILE

The Environment and Process Business Area covers a comprehensive range of technologies, products, and services for mechanical and thermal solid/liquid separation for municipalities and major industries, such as coal and mineral processing, chemical/petrochemical, and food processing.

The Business Area is a global leader in this field and offers comprehensive support, from design to the manufacture of key components for thickening, dewatering, drying, and incineration, as well as erection and start-up of turnkey plants, including automation and safety engineering.

The large installed base of Andritz products and systems, including more than 10,000 centrifuges, more than 10,000 filter presses, and over 100 sludge drying lines worldwide, is serviced from more than 15 dedicated Andritz service centers in Europe, the Americas, Asia, South Africa, and Australia.