EurGeol Dr. rer. nat. Lutz Krakow
Resource efficiency in the clay brick and tile industry | Part XII: Greywacke carbonate granulate from hard rock processing
1 Geological background and site
At Berge Quarry near Meschede/North Rhine-Westphalia, in one concession both greywacke and limestone are extracted and processed to aggregates and construction material mixes for the construction of transportation routes. The material consists in 70% greywacke and 30% limestone extracted from separate working sites. The underlying greywacke is concordantly covered by blackish-grey reef limestone (»1). During crushing and sizing, over 10 000 t rock flour are produced per year, which are homogeneously wetted and granulated. As part of the...
