| 摘要 |
The present invention is to be used in prospecting areas as a substitute for the manual pans, short and long sluices, lined with coarse fabric, for the collection of precious metals, with the purpose of making the prospecting areas economical, with a productivity equivalent to that of 60 men, which may be assigned to new prospecting areas, with the main prospecting pan (1) providing a counter-turning movement with the same turning speed on its shaft (5) and which maintains the pan (1) stationary while gravitates and oscillates around the fulcrum (6); the prospecting pan (2) is maintained stationary by the action of two counterweights (19), located 180<o> to each other, and for the removal of the water and of the final portion of the concentrate which contains free gold, cassiterite, etc., the prospecting pan (1) has, close to the bottom a plug (20) to which a clear plastic hose is connected, being provided, further, the adaptation of a removable auxiliary prospecting pan (2) at the center of the main pan (1) to which it is connected by four supports (18). The super concentrate obtained at the end of the auxiliary pan presents a recovery of 97% of the gold content of the mineral. |
