The longitudinal blending bed is used for storage and homogenisation of the main components such as limestone, limestone/marl/clay mixtures, clay or coal. It consists of two stockpiles, with the material being stored according to the CHEVRON stacking method in one stockpile with the aid of a belt stacker, and the material from the other stockpile being reclaimed by means of a bridge-type scraper reclaimer that reclaims from the face of the stockpile. This combination means that a high blending and homogenisation effect can be achieved. Stacking capacities of up to 2000 t/h and reclaiming capacities of up to 1200 t/h are achieved.
What is advantageous in the case of longitudinal blending beds is that they can be extended and that when building up the stockpiles, the exact chemical composition of the stockpile can be achieved with the last precisely stacked material. This means greater flexibility when working the upstream quarry.