Gold can be recycled to serve different other purposes
Gold, the most precious metal that serves several commercial and technological applications, uses the process of smelting for its purification. Gold has very crucial role in technology, automotive industry, Electronics, Medicine, Nano technology, Space and Engineering. Smelting is nothing but a form of extractive metallurgy that is used to produce a metal from its ore. All the important metals like the Gold, Silver, Iron, Copper, etc are separated from its ore using this process of smelting. Smelting involves the use of heat, pressure and a chemical reducing agent that can decompose the ore by expelling off the impurities in the form of gases and slag and leaving the pure metal behind. Any metal appears naturally in the earth in the form of its ore. Similarly we can find gold in its ore form in the earth. In order to obtain pure gold from the ore, the ore has to be processed to remove the impurities from it. This is done by the smelting process. Removing the impurities and the other associated minerals from the Gold allows its usage in the purest form. This purest form of Gold has several industrial and commercial applications as in the electronics and in the making of jewellery.
The first and the most important step in the gold smelting process is the procurement of the gold from earth, i.e., the mining of the ore containing gold from earth. The gold containing ore thus obtained, bearing the crude matter with it, is then pulverized or crushed and placed into the gold melting furnace. Here the gold must be elevated above its melting point and so it is required for the furnace to reach above the temperature of 1064 Degree Celsius. When the furnace slowly starts getting heated and the temperature continues to raise, the impurities that are associated with the gold start burning off while the other traces of metals remain.
Now free from impurities and other suspended materials, the gold is just associated with other traces of metals. Now we need to separate these traces of other metals from the gold to get the purest form of Gold. In order to separate the other metals from Gold, we introduce cyanide solution or mercury into the furnace. By such introduction of mercury or the cyanide solution into the gold melting furnace, the gold tends to coagulate and form into sniggets and clumps of Gold that are the pure form of gold.
The gold smelting process is now complete and the gold should be melted once more that can be poured into moulds to form ingots. Now this ingot formed is of the most precious metal gold and this can be used for various purposes that it can best fulfill. This gold now can be used for the making of attractive jewellery and electronics contacts. After serving those purposes they can be again recycled to serve different purposes. For recycling gold has to again undergo another smelting process so that it is considered the purest form once more.
About the Author