Gravimetric separation in
vibration platforms
The most commonly utilized is the modified Wilfley with dead points. Once the fine materials have been classified at the level of the semi concentrates (substances weighed associated to gold) for a final definitive classification, it is possible to carry out the separation of gold and the associated substances over an inclined and vibrating platform that has a asymmetric horizontal movement, so that in a classified and slow way the mineral substances separate according to their specific weight, dealing with materials inside in the ranges of 4 mm. to 400 mesh. The fine materials concentrate in elevated and short cut rotations. The thicker materials concentrate in lower and long cut rotations. A concentration platform of 4,500 x 7,000 mm in length, operating with determined minerals will have the following regulations:
|
Concentrator
|
Particle Sizing
|
RPM
|
Course
|
L/S
|
Capacity
|
|
Length 4500 mm
|
4 mm + 50 mesh
|
275
|
19 mm
|
65
|
1,500 Kg
|
|
Length 4500 mm
|
50 mm + 200 mesh
|
300
|
12 mm
|
50
|
1,200 Kg
|
|
Length 4500 mm
|
200 mm + 400 mesh
|
333
|
9 mm
|
38
|
800 Kg
|
|
Length 7000 mm
|
12 mm + 1.5 mm
|
180
|
32 mm
|
200
|
12 t/h
|
|
Length 7000 mm
|
6 mm + 1.0 mm
|
190
|
28 mm
|
135
|
10 t/h
|
|
Length 7000 mm
|
3 mm + 0.5 mm
|
200
|
25 mm
|
90
|
7 t/h
|
|
Length 7000 mm
|
1.5 + 0.0 mm
|
220
|
19 mm
|
50
|
4 t/h
|
|
The vibration platforms can be mounted in three levels in a series and in parallel.
|
