We are produce a large aluminium product line for renewable energy. The process of primary aluminum production for renewable enrgy takes place in three diffrent stages. Initially, bauxite is extracted by mining. Then, it is converted to alumina via the Bayer process. According to the worldwide average, 2.3 tons of bauxite is necessary to produce 1 ton of alumina. Primary aluminum is produced via the Hall�H�roult process, a process of electrolytic reduction in a molten bath of natural and synthetic cryolite. Two tons of alumina is necessary to produce 1 ton of primary aluminum.
The primary aluminum produced is alloyed in the cast house; here, cast aluminum and wrought aluminum are produced. The content of alloying ingredients is relatively high for cast aluminum. Cast aluminum cannot be reshaped plastically and must therefore be cast. In contrast, wrought aluminum can be reshaped plastically and its content of alloying ingredients is low. The alloys are converted to castings and semis (sheet plates and profiles). These are used for the production of final products. Figure 2 provides an overview of the consumption of aluminum by domestic end users in the United States, the world's most important aluminum consumer.