In 1767, Swedish chemist Torbern Bergman synthesized alum by boiling alunite in sulfuric acid and adding potash to the solution. He also synthesized alum for a reaction products among sulfates of potassium and earth of alum, demonstrating that alum was a double salt. In the 1st phase of aluminium generation https://businessrulengine.blogs100.com/29107984/not-known-details-about-aluminium