In 1767, Swedish chemist Torbern Bergman synthesized alum by boiling alunite in sulfuric acid and including potash to the solution. He also synthesized alum being a response products among sulfates of potassium and earth of alum, demonstrating that alum was a double salt. The bauxite is then transported to plants https://kettybusinesssupplyandpaper.howeweb.com/29208463/considerations-to-know-about-aluminium