Band 6+: The diagram below explains the process of making wood pellets, used to heat buildings. Summarize' the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram below describes the formation of wood pellets, which are ultimately used in heating houses and appartments.

Overall, the manufacturing process consists of seven steps, starting with the arrival of sawdust and ending with the packaging of a final product for commercial purposes.

Firstly, the creation of wood pellets begins with the arrival of sawdust from sawmill, where it is ground. After that, fibers of the same size are created form a sawdust, which undergoes hammering in a hammer mill. Then, steam dampens ground sawdust. As soon as fibers are dampened, they become pellets with the help of holes in a pellet machine, which shapes fibers.

Following that, created pellets are cooled and then vacuum cleaner eliminates loose dust from them. Having get rid of small particles, wood pellets are packed into bags that weight eighteen kilos (forty pounds, in other words) for commercial purposes. Wood pellets are appropriate to use for stoves and furnaces.