Metals have become a part of our daily life. They are used widely in various daily and industrial appliances like refrigerators, cookers, etc. These appliances need a huge amount of metal deposits. For extracting the metal, digging of soil deeply in the ground is practiced. This may turn a fertile land into a desert. If the extraction continues for a long time, it may result in the lack of metal source for future needs. As metals can be used again and again, recycling is a better solution for conserving the planet as well as natural resources.

Melting the metals for making new products is one recycling method that involves no change in metallic properties. Aluminum, tin, brass, copper, (ferrous) steel and iron are the commonly recycled metals. These metals are generally collected from the worn-out cars, damaged refrigerators, cookers, etc.

Procedure

The starting step for recycling is separating the metallic portion from plastic objects (by the use of magnet etc). The next step is to compact the metal. All the appliances are squeezed, broken and crushed in the machines so that they don't occupy much space on conveyor belts. The small size consumes less energy for melting in a large furnace. Finally, the molten metal is purified by electrical methods. The pure blocks are used for making new products. In this way, besides reducing the quantity of metallic scrap (waste), recycling keeps the land green.