Limestone, aggregate

Limestone that, due to its comparatively low calcium carbonate content, is not suitable for the production of burnt lime is processed to obtain a variety of other lime-based products. In this case, limestone is crushed, sifted and washed. The water used in the washing process is treated for re-use by adding a flocculating agent. A considerable portion of the resulting sludge is used as a binding additive in the KFN Netstaler® 0-15 mm product.