EST essay

Benefits of recycling
-how aluminium cans can be recycled.

Hmm..the format I m not very sure..
If I am wrong please correct them for me.

Recycling Aluminium Cans (then underline)

Aluminium cans are made from bauxite.Bauxite,like all other minerals,has to be mined. This process is not only dirty, it is also expensive. Energy, in the form of heat, is required to make aluminium cans from bauxite. Now, we can save much of this energy and cut down pollution because of recycling.Recycling aluminium cans is a relatively simple process.

Firstly,used cans are collected by the many cash-for-cans centres that are mushrooming all over the country.Here, the cans are sorted. Cans which are in bad shape and are considered useless are discarded while the rest are sent to the recycling factory. As soon the cans reach the recycling factory, they are sent to a magnetic head which seperates aluminium cans from steel cans. Steel cans stick to the magnetic head, whereas aluminium cans do not. The steel cans are rejected. The aluminium cans are crushed into blocks. In the smelter or furnace, high temperatures melt the blocks of aluminium. The molten aluminium is then poured into casting moulds and cast into ingots.

When these ingots are passed through rollers, they become aluminium sheets. The aluminium sheets are then cut to the required size and rolled into new cans. The cans which are now ready for use are then sent to drink manufacturers.

Report by: (date at the right-hand side)--> 1/6/08

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