Mercury was once used throughout the world in gold processing. It was employed to assist with the extraction of gold and silver from ore. This process has since been replaced by more efficient and less environmentally damaging techniques such as cyanide leaching in largescale and industrial mining.
More than 90 percent of the world's gold has been produced following the rushes of the mid to late 1800s [source: World Gold Council]. The entire process of gold mining can be broken down roughly into four steps: prospecting, mining, extracting and refining.
The actual gold originates deep within the earth in places called pockets. These pockets are filled with gold, heavy ore, and quartz. If enough gold is discovered in the ore, the technological process of hard rock mining begins.
25/04/2013· the process of mining of gold or gold ores from the ground. – YouTube. 17 Mar 2013 . Gold mining is the process of mining of gold or gold ores from the ground. There are several techniques and processes by which gold may be . »More detailed
Gold is found both close to the surface of the Earth and underground, mixed in with other metals such as copper, silver and lead. Where the gold is located will dictate what type of mining process is used to retrieve it – and what costs will be associated with it. It all starts with the geologists.
The slurry is agitated in the leach tanks, either mechanically or by means of air injection, to increase the contact of cyanide and oxygen with the gold and silver and enhance the efficiency of the leach process. The cyanide then dissolves gold and silver from the ore and forms a stable metalcyanide complex.
Gold Smelting Process . Gold smelting is a long process and involves a number of steps. Here are the major steps you should follow when smelting gold: 1. Gold Processing . The first step in gold smelting involves processing the gold ore.