Open Pit Quarrying Machine Price
Placer mining is the activities of mining the precious metal deposits (particularly gold and gemstones) found in alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, is typically only a minuscule portion of the total deposit. Since gems and heavy metals like gold are considerably more dense than sand, they tend to accumulate at the base of placer deposits.
Placer Panning Mining Plant
The simplest technique to extract gold from placer ore is panning. In panning, some mined ore is placed in a large metal or plastic pan, combined with a generous amount of water, and agitated so that the gold particles, being of higher density than the other material, settle to the bottom of the pan. The lighter gangue material such as sand, mud and gravel are then washed over the side of the pan, leaving the gold behind. Once a placer deposit is located by gold panning, the miner usually shifts to equipment that can treat volumes of sand and gravel more quickly and efficiently.
Used Placer Mining Equipment
Placer mining is a kind of surface, open-pit mining. It can be applied in mining process for many types of ores such as gold, silver, iron, copper, tin etc. In placer gold mining operation, the concentration of placer gold ore consists of a combination of the following three stages: roughing, cleaning, and scavenging.