10 world gold mining industries biggest 2012

          Based on data from the U.S. Geological Society, estimated gold ore reserves that have not been mined and available on the planet about 51,000 tons, making gold business is getting bigger. As quoted from the latest data issued by Thompson Reuters and the Metals Economics Group reported by CNBC, Monday (19/03/2012), here are 10 of the world's biggest gold mine owned by public companies. Mines is considered as the greatest because it comes from one mine alone, not the production of several mines which are then combined by a single company.

 
It's her 10 largest gold mine in the world, among others :

1. Grasberg Mine

     Grasberg is a world-class mining complex in Indonesia, where Freeport-McMoRan Copper & Gold is engaged in exploration and development, mining and milling of ore containing copper, gold and silver. The Grasberg mine is located at Tembagapura in Irian Jaya, which is Indonesia's easternmost province, on the western half of the island of New Guinea. The mine is about 60 miles north of Timika, a town of about 100,000 people. There are about two million people living in this region. The Lorentz National Park, which has several glaciers on its peaks, lies to the east of the mine. The mine is 96 km north of the southwest coast of Indonesia at elevations of 2,500 to 4,200 m above sea level. 

•  Location: Papua, Indonesia
• Gold production in 2011: 1.444.000 0z
• The area: 527,400 acres
• Miners: Freeport-McMoRan Copper & Gold
• Type of mine: open mine and underground

Extracting Gold By Carbon In Pulp with Activated Carbon

       Carbon In Pulp is the absorption of compounds into carbon Dicyano Aurrat. In the process extracting gold by carbon in pulp with activated carbon occurs after the leaching of mineral ore slurry in a tank. And during the washing, the carbon-in-leach and adsorption occur simultaneously. In both processes mineral ore leaching slurry will be transferred from one tank into the recovery tank of carbon using a pumping machine.  

This is generally accomplished by passing the slurry through a series of adsorption vessels coupled with the periodic transfer of carbon, usually associated with pulp, and in the opposite direction. Column tanks are often used consists of a large carbon column (diameter 5 to 8 feet) and 15 to 20 feet in height, and filled with activated carbon. Minimum load of carbon rule of thumb is one pound of activated carbon per 0.1 ounces of gold are present in solution, and usually it's a few pounds per 1 / 10 ounce

         Two main methods Carbon In Pulp (CIP) and Carbon Columns may consist of the most widely used technique for extracting gold today. Both methods use a large tank in the column parallel step where gold is dissolved in the slurry (pulp) through a chemical process and combine agitation, oxygen and cyanide. In CIP, the carbon is mixed with a solution of cyanide leach and ore agitated in the Tank leaching, and the adsorption process will separate the gold. 

 This will bring together between carbon and gold cyanide solution which is attached to the carbon. Granular carbon is often hard to use in a variety of sizes between 10-16 mesh. Carbon is then filtered by using the screening, on-screen screening of carbon will settle and the liquid is finely ground ore (-100 mesh) will be screened out through the screen into the tank.CIP treatment system can be described simply as a picture diagram below:

Diagram of the processing of gold with carbon in pulp