this presentation is about types of gravity separation.

1. By : Ali mehri
Supervisor : Dr. Karimi

2.  Introduction
 Bench Scale & pilot plant Tests
 Shaking table
 Jig
 Heavy media separation
 Dense medium cyclone (D.M.C)
 Heavy liquid
 References
2

3. 3
Basis of
G.S
methods
:

4. 4

5. 5
Feed
Reaching
Different Degree
of Liberation
Coarse
Particles
Rod Mill Open
Circuit
Ball Mill
Closed
Circuit
Size
decreases
Screen Instead of Hydro Cyclone
Slimes(fine
particles)
Viscosity increases
Accuracy of separation
decreases

6. 6
Desliming
Usually Hydro
Cyclone
Gravity
Methods
Other
Classifiers
Cones
Jigs
Spirals
Old Factories
in the Hills
(Height
Difference)
Pulp
Transmission
Natural
Movement
(Weight)
Less energy
Less slimes
Limited speed

7. 7
Material in the Feed, Close to the
Density of Separation
Particle Size
Throughput of the
Plant

8. 8
DesignParameters
Related to Device
Table
Characteristics
Frequency and Amplitude of
Oscillations
Shape of Obstacles
Related to Feed
Size Distribution
Pulp Characteristics
Main
Parameters
Tilt of Table
Pulp Solid Content
Flow Rate (Water Quantity)

9. Design Parameter
9
Jig Flow Rate
(Water Quantity)

10. 10
DesignParameters
Related to
Device
Tilt of Cyclone
Number of Cyclones
Pressure Drop
Diagonal of
Openings
Related to
Feed
Inlet Feed Pressure
Medium / feed
Main
Parameters
Tilt of Cyclone
Inlet Feed Pressure
Medium / Feed

11. 11
to Settle
Particles
Sufficient
Time
Porous
Materials
Centrifuging
Appropriate
Fraction

12. 1. E. 1. PRYORA.R.S.M, D.Se., D.I.C., M.I.M.M;1965; MINERAL PROCESSING.
2. Maurice C. Fuerstenau, Kenneth N. Han; 2009; Principles of Mineral Processing
3. Tim Napier and Barry A. Wills; 2006; ''Mineral Processing Technology'', pp. 248-249.
4. J.A. Folinsbee, B. Hewitt; 1997; Gravity Concentration at Campbell Mine.
5. R.Q. Honaker, W.R Forerest; 2003; Advances in Gravity Concentration.
6. A.K. Mukherjee, R. Sripriya, P.V.T. Rao, P. Das 2003,''Effect of increase in feed inlet
pressure on feed rate of dense media cyclone'', pp. 259-260
.7‫ام؛‬‫ر‬‫به‬،‫ضايي‬‫ر‬1377‫؛‬"‫معدنی‬ ‫مواد‬‫ي‬‫ر‬‫آو‬‫ر‬‫ف‬ ‫ي‬‫ژ‬‫تكنولو‬(‫ثقلي‬‫ي‬‫ساز‬‫ر‬‫پرعيا‬")‫هرمزگان‬‫دانشگاه‬،‫ل‬‫او‬‫چاپ‬،.
.8‫حسين؛‬ ،‫اللهي‬‫نعمت‬1381‫؛‬"‫ايي‬‫ر‬‫آ‬‫كانه‬"‫ل‬‫او‬‫جلد‬،‫ان‬‫ر‬‫ته‬ ‫دانشگاه‬‫ات‬‫ر‬‫انتشا‬،‫سوم‬‫چاپ‬،.
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