EurGeol Dr. rer. nat. Lutz Krakow

Resource efficiency in the clay brick and tile industry Part XI: Muscovite filter cake from quartzite washing

1 Geological background and site

At Saalburg Quarry near Friedrichsdorf/Hesse, Germany, Early Devonian Taunus quartzite is extracted and processed into high-grade chippings, light-coloured road construction materials and building material mixes. With the help of conventional processing technology, until recently large volumes of clay-containing stony soil were produced, most of which had to be landfilled. To increase raw material efficiency, the quartzite has undergone mineral washing since late 2014. With the effective separation of the fines, it has been possible to substantially increase the...

Related articles:

Issue 2021-02 EurGeol Dr. rer. nat. Lutz Krakow, Dr. rer. nat. Mathias H. Köster

1. Geological background and site Rhyolites are leucocratic, thus light-coloured siliceous volcanic rocks with a crystalline and partly glassy matrix. They consist predominantly of quartz and alkali...

more
Issue 2012-11

1 Geological frame and location Since 1902 raw dolomite rock has been extracted from ­Grevenbrueck quarry and processed to high-quality raw materials for the steel and foundry industry. The quarry...

more
Issue 2012-7-8

1 Geological background and site For over 135 years, the family-run company Strobel Quarzsand GmbH has been extracting kaolinitic silica sands and processing them to high-quality raw materials for...

more
Issue 2012-04

1 Geological frame and location At Untschen Gravel Works near Gera, Germany, severely weathered clayey and pebbly sandstone is extracted and pro­cessed to road construction materials. In the...

more
Issue 2021-02 Hartsteinwerke Sooneck

The filter cake consisting of a mixture of clay, silt and fine sand from the rock of the Rhenish Slate Mountains has now been renamed by Hartsteinwerke Sooneck GmbH to Rheinstein Clay. With this new...

more