The diagram below shows the process by which bricks are manufactured for the building industry. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The flow chart illustrates the manufacturing process of

bricks

for the building industry. There are eight steps in

this

process: digging, rolling, mixing, cutting and shaping, drying, heating, packaging and delivering. In the first step, clay which is dug from the ground by the digger is put on the roller through the metal grid.

Second,

sand and water are added.

Third,

the mixture, including clay, sand, and water is either cut into

bricks

by the cutter or shaped with the mould.

Then

, the

bricks

are put in the drying oven where

bricks

are dried for 24 to 48 hours.

Next,

the

bricks

are moved into the kiln, where they are heated first at moderate temperatures of 200

°C

to 980

°C

and

then

at high temperatures of 870

°C

to 1300

°C

. After that, they are cooled down in the cooling chamber for 48 to 72 hours.

Last

, the

bricks

are first packaged and

then

delivered to the building industry.