Raw Material Preparation

After crushing and grinding, the ore passes through washing and grading stages. The aim is to achieve the particle-size distribution and surface cleanliness that determine the efficiency of the following purification step, and to remove impurities such as iron, aluminium and alkali metals by physical means as early as possible.

Water and energy efficiency come to the fore here. Recovery of process water and waste minimisation are what our sustainability approach means at this stage.