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Extraction and Processing Technologies
Technologies in Auriferous Alluvial Mining
Hydraulic disjunction & Use of Monitors
This requires a body of 4 to 5 meters or more of difference of levels and the resource of a hydria fountain for the use of motor pumps of high pressure; its tips are variable with relation to the cut or sprayed separated transport.
For more efficiency of movements of lands of the over layer, it is advisable to produce the impact of the spray in the base of the body, mainly in sandy layers of easy undermining and which produce instability in the talus, which originates the precipitation of the ground structure to separate.
The method of monitoring comes to be in mining of auriferous placing (banks and alluvial terraces), the most economic, clean and efficient system.
On the river shores, its efficiencies widely surpass three times more than the equipment of movement of land, heavy with inversion costs 1/10 of a bulldozer.
A monitor of 6” with a motor pump of 6”x36 C.V. per day, it displaces 1,000 m3.
When the areas to be downloaded are located within 200 meters from the shore of the river, it is sufficient to eliminate the separated ground by a canal of land or drainage with a pendant of 0.5%, the major distances of elimination of overload is effectuated with another unit of pumping of solids that discharges at whatever natural depression of land of obstruction.
The implantation of this type of works in auriferous mining is of much importance in some areas, where the phenomenon of the hand of work is scarce and of a high cost, its use allows the movement of land within three turns in 24 hours.
