The word “metal” is derived from the Greek word “metallon” and its mean extract from earth.
In the periodic table 75% are metals of all the element.
Metals can be recycled again and again, there is no time limit for it to be recycled.
About two third of all the aluminium that has ever been produced is still in circulation.
Food institute and hospitals used copper and its ollays like brass because of its anti-microbial property to prevent spread of disease.
Once aluminium was considered the third most abundant metal on the earth and more precious than gold, until in 1800s the cheaper method was invented to separate from ore.
Most metals have high melting point. In all pure metals tungsten has the highest melting point.
Mercury is the only metal which is liquid at standard room temperature due to its lowest melting point.
Only 67.4% of the 3 billion used aluminium beer cans are recycled in Australia in 2010 but aluminium cans take about 200 to 500 years to decomposed.
The recycled aluminium can be able to back on market in 60 days.
Metals are shredded into smaller pieces and sorted according to their types, before melting and casting into new products.
Car batteries release all kind of pollutants which sent to the landfills that cause problem because 98% of a car battery is recycled but 90% are not recovered.
The saved energy, from recycling only one aluminium cane is equal to run a computer for 4 hours and a lightbulb for 20 hours.
Recycling of steel reduce 76% water pollution and 86% air pollution.
A compound, bronze is made from alloying tin and smelting copper.
From 45 years, the recycling of metals is increasing every year.
In 2015, the recycling of used aluminium cans was only 34.9% over 2.4 million cans. The energy, that could be saved from 2.5 million cans, is equal to run 2 millions hours of light bulb and 7.2million hours of a computer.
Steel takes 50 years to decompose.
There are10 states that pay about 5% for beverage can and bottle to be return for recycling. It is a good step to prevent the overcrowded the landfills.
Metal lids of bottles and cans can also be recycled but because they are too small that’s why they are hard to be collected from the landfills. Therefore, we can help by collecting the metal lids of used bottles in a container rather than throwing into the landfills.
According to the Institute of Scrap Metal Industries, in US, there are more than 130 million metric tons of materials which transferred into raw material commodities which includes copper, aluminium, lead, iron and steel etc.
The industry of recycling employing more than 1 million people and generating more than $230 billion annually to help the economy, according to the National Recycling Coalition.
Annually, more than 150 million metric tone of scrap metals are recycled by US.
When 1 ton of steel is recycled, there is also conservation of 25,00 pounds of iron ore, 14,00 pound of coal and 120 pound of limestone.
In engineering construction 21 % of all metals is used in Australia.
