Gold mining was first carried out in alluvial areas. Processing system is also very simple to do that is by panning using a tray, which then developed with gold mining wave table, and followed by gravity separation method using the amalgamation process with the capture of mercury. Gold exploration in the lower layers of soil to get the primary sediment deposits began in 1860 with gold using a cyanide treatment system. And in 1960 the method of processing low-grade gold began being applied, which carried out the processing system through leaching heap, this process is basically developed from gold processing system using cyanidation . Of all the gold mineral processing must go through several stages in all these stages it is absolutely live to get the desired results, as for some stages it can be underlined by the diagram below
CRUSHING / MILLING
GOLD BARS
Explanation Of The Gold Processing In A Simple Diagram Above :
Comminution is a process of size reduction of mineral ores containing a precious metal, with the aim to liberate the mineral content of mineral ore from other minerals contained in the host rock. And this process is divided into stages:
- Refractory ore processing
- Crushing
- Milling
Destruction of rocks made to get smaller sized rocks. Size obtained is usually ± 20mm. machine used is a machine or Stone Crusher Hammer Mill or Crusher Jaws.
The Processing Of Gold
Once the size of the ore is reduced, the process is then performed by separating the mineral concentration process gold from mineral impurities, consisting of several kinds of processing techniques:
- PROCESS GRAVITY CONCENTRATION
- AMALGAMATION PROCESS
- FLOTATION PROCESS
- LEACHING PROCESS
Gold Concentrate
From the stage of the process will then be obtained concentrate processing ores containing various metals. And the concentrate will be processed in order to obtain the value of gold in high purity chemical process. And a few stages of the treatment process through a process
- SMELTING
- PARTING
- AQUA REGIA
Bars Gold : The results of the concentrate that has been processed, then used a metal rod that is ready to be marketed in accordance with the price of gold on the market.
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- Gold Processing
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