Aluminium

Aluminium was manufactured for the first time in 1808 in a very impure form. After numerous attempts the electrolytic process was developed in 1886. The production of recycled aluminium (casting and wrought alloys as well as deoxidation aluminium) began in the 1920s/1930s due to the growing demand for aluminium and the quantities of readily available scrap.
The economic reason for using secondary aluminium instead of primary aluminium is that the amount of energy needed to produce one tonne of primary aluminium is enough to produce 20 tonnes of recycled aluminium.

With a share of 7.57% by weight of the Earth's crust, aluminium is the third most abundant element therein, albeit this only in chemical compounds that cannot be isolated.
The production of pure aluminium is only possible from bauxite. It consists of aluminium hydroxide (about 60%), iron oxide (30%) and silicon oxide.
Large deposits of bauxite occur in the South of France, Guinea, Russia, India, Jamaica, Australia, Brazil and the USA.

Aluminium has the atomic number 13 in the periodic table and a density of 2.7 g/cm³. The silver-coloured metal has a melting point of about 660 °C and a boiling point of about 2,467 °C. Like all metals, it is a hazardous substance in a grain size under 1 mm. Due to aluminium's high affinity for oxygen, iron foundries and steelworks use aluminium as deoxidiser. The quantity of aluminium and its content added to a melt are of decisive importance for cavitation. The more oxygen that is withdrawn from the melt, the smoother casting is and the fewer cavities form. We supply deoxidation aluminium in the form of powder, grit, granules, pellets, one or more-part waffle plates and ingots with an aluminium content of 94 to 99.7%.