A fine, snowy white powder called Alumina (aluminum oxide) [1, 6]. Act III: The Lightning Strike (The Hall-Héroult Process)
The electricity rips the oxygen away from the aluminum. The oxygen bonds with the carbon rods and floats away as CO2, while the pure, heavy molten aluminum sinks to the bottom of the vat [1, 6]. Act IV: The Final Form How Aluminium is made animation
The remaining clear liquid is cooled, causing white crystals to settle out [1, 6]. A fine, snowy white powder called Alumina (aluminum
Massive carbon rods (anodes) are lowered into the vat, and a colossal electric current—hundreds of thousands of amperes—is surged through the liquid [1, 6]. Act IV: The Final Form The remaining clear
Our story begins in tropical regions, where a reddish-clay rock called is mined [1, 5]. It doesn’t look like metal at all; it’s a mix of aluminum compounds, silica, and iron rust [5, 6].
This is the most dramatic part of the animation. Alumina is very stable; you can’t just melt it with fire to get the metal out. You have to "shock" it [1, 6].