The Palaeozoic – new raw material sources for the clay brick and tile industry (Part I)

The Palaeozoic, the oldest of three geological eras, holds a host of new raw material sources for the clay brick and tile industry. The reason for this trend are increasing restrictions in the granting of mining and quarrying licences. To improve deposit efficiency, more and more companies in the aggregates industry are going over to extract materials from parts of the deposit with clay impurities and/or process piles of stony earth. During mineral washing, the stones are separated from the clay impurities. In this process, considerable quantities of clay mineral filter cake are recovered. New is also the granulation of rock flours from dry processing. Fine-grained waste materials that used to be simply dumped are now available to the clay brick and tile industry as fine-grained bulk solids with particle sizes smaller than 0.2 mm. Overall, completely new raw material perspectives are opening up for the brickmakers – and that is both in respect of geological origin of the raw materials and their regional availability.

EurGeol Dr. Lutz Krakow, Dr. Krakow Rohstoffe GmbH

x

Related articles:

Issue 2016-8

The Palaeozoic comprises the geological systems Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian: it began around 541 million years ago and ended around 252 million years ago. In...

more
Issue 2016-1 Interview with Dr. rer. nat. Lutz Krakow, Dr. Krakow Rohstoffe GmbH, Göttingen

Zi Brick and Tile Industry International has reported on mineral waste and the possibilities for its application in the clay brick and roofing tile industry in twelve articles from issue Zi 1-2/2012...

more
Issue 2016-4 EurGeol Dr. rer. nat. Lutz Krakow & Dipl.-Geol. Franziska Schunke

1 Global geological history and tectonics The geologically oldest clay raw materials used in the German clay brick and tile industry date from the Ordovician. In geological history, the Ordovician is...

more
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 2015-8

We shall present abstracts of all papers here: What makes our employees sick? Radioactivity of ceramic construction materials Clay brick and tile making – fit for the future? Avoiding...

more