The flow chart illustrates the process of recycling aluminium cans for drinking.
Taking a general view, this is a man-made cyclical process consists of 11 steps, starting with collecting waste and ending up with producing new cans. To finish these steps, people will spend approximately 6 weeks.
To start with, the workers collect waste from the garbage dumps by environmental vehicles and move it to a factory. However, the used cans are not seperated from the waste yet; therefore, deposition is a compulsory phase to distribute them. Subsequently, they are soaked in water to clean impurities. Then, the empty cans are masticated by crushing machine into tiny pieces in order to process them conveniently.
After processing step, the workers erase them with chemicals to clear the paint on the outside of the cans and the oxidized stains. Afterwards, they are transferred to the furnaces to melt into liquid form. Therefrom, the workers pour those aluminium-liquid into can-shaped mould to prepare for the following step. When the cans harden, they are weighted if they are suitable for selling. In the final stage, the workers place them on the rolling machine to roll and the new cans are ready to be sold.