The diagram illustrates the process of making recycled paper. The process consists of four main stages: making pulp, filtering, cleaning, and making paper. Overall, the recycling process involves a series of mechanical and chemical treatments aimed at transforming used paper into a clean and usable product.
In the first stage, the used paper is transported on a conveyor belt into a pulping machine, where it is mixed with water and chemicals to create a mixture of unfiltered pulp.
The second stage involves filtering this pulp mixture. The mixture passes through a filtration system that removes larger particles, resulting in filtered pulp.
Next, the filtered pulp undergoes a cleaning process. It is then mixed with water and soap, and air is introduced to help remove ink and other contaminants. The result is a cleaned pulp.
Finally, the cleaned pulp is passed through heated rollers, forming sheets of recycled paper. This paper is then rolled onto a new conveyor belt, ready to be used.