Gold Refining182107

Considering the state of the present economy the world's financial systems have come into the limelight more than ever recently. Seeing that stocks have dropped and corporations have become unstable, gold has also been a source of a great deal of attention as the price of gold has skyrocketed and become even more valuable. Individuals prefer to have a touchable indicator of wealth and nothing serves that purpose like gold. As earliest recorded times gone by gold continues to be essentially the most substantially prized / valued / precious metal. Its malleability, corrosion-resistance, and rarity, have made it a precious commodity. [http://metalrefinery.com gold refining] But where does gold come from?

Gold is a chemical element found as nuggets or grains in veins or alluvial deposits in the earth. South Africa, the United States, and Australia are the world's top three gold producing nations. The majority of gold in the U.S. is currently mined in open pit mines. Scientists utilize technology similar to satellite surveys and geochemistry to locate a gold ore deposit. The deposit is measured and the mine is meticulously designed. Samples of the ore are then taken to measure the grade of the ore as well as its properties. 

The ore is after that is mined and separated into low grade ore and high grade ore. The low grade ore will be dissolved and collected. The high grade ore will be ground and pulverized into powder. That ore is then separated into three different processes, [http://metalrefinery.com metal refiner] dependent upon the characteristics of the ore. Refractory ore containing carbon is roasted and burnt right down to oxide ore. Oxide ore is sent to a leaching circuit where it is dissolved in cyanide. Sulfide refractory ore is devoid of carbon it is oxidized in an autoclave to get rid of the gold from the minerals after which it is sent to a leaching circuit.

Refining gold represents the concluding phase in the gold production. This procedure consists of eliminating the impurities that remain in the precious metal following the smelting process Companies specialized in refining receive both gold bars and gold scrap which they later on re-liquefy.

Once the leaching procedure is over and done with the gold is then collected from the solution and onto activated carbon. It is then loaded into a vessel and the gold is chemically stripped from the carbon. Using chemical substitution known as the electrolytic process, the gold is precipitated from the solution and it is finally in its pure form. This pure gold is then melted into bars called "dore" bars that contain up to as much as 90% gold. These bars are then sent to precious metal refiners for additional refining until the bars of gold are up to as much as 99.9% pure gold. 

There are actually two main techniques for refining gold: The Wohlwill process and Miller process. Following refining, these bars can then be held in reserve and utilized in financial dealings or melted down and utilized thousands of other applications like jewelry, [http://metalrefinery.com precious metal refinery] watches, coins, dentistry, medicine, industry and many other applications or functions.