↑   Estimates differ all over the world, but most resources give a figure of two–4kg of bauxite for each 1kg of alumina. Reduce Melting Position: Aluminium melts at a lessen temperature (about 660°C or 1220°F) as compared to metals like steel. This restrictions its use in applications the place higher temperatures https://donovanzsguj.blogdosaga.com/37334410/not-known-details-about-aluminium-greenhouse