Environmental Engineering Reference
In-Depth Information
C465
C463
Set - Up
Simulation set-up
Cone Crusher 2
U(E)
Selector9
U
[Solids]
[Crusher]
4
Step5
feed
To Workspace5
Switch
0.76
Constant10
Selector6
0
UU(E)
Selector8
-K-
Gain7
U(E)
U
Display8
Screen
Step4
W
P
f(u)
Fcn2
[Power]
1
Valve
[Speed]
9
[Level]
1
0
Constant6
em
u
[MillSpeed]
From1
1
0.15s+1
0
SAG input
Level
[Feed]
From
W
Mmi
MIX WMmi1
P
P
MIX PP1
SumpWater
To Workspace15
Product1
P
P
MIX PP
SAG Mill
Step6
Step
Display11
Feed 1
0
W
Mmi
MIX WMmi2
Random
Number
[Water]
From13
Product2
Step7
Feed 2
valve 2
3
% Sol2
[Feed]
MIX WP3
3
12:34
Digital Clock
[MillSpeed]
To Workspace12
Scope7
SumpLevel
[Power]
From2
[Pump]
7
5
Sump
t
[Sump]
PRBS
PRBS
[Level]
From3
[Water]
To Workspace13
Hidrociclón
Display7
Pressure
[Solids]
0
58.21
Constant
In1 PRBS
Y
[spLevel]
10
Pump
Gain2
Display4
emux
Se
lector2
53.66
Constant1
In1
PRBS
0
60
U(E)
U
Out1
[LimPebbles]
From12
[LimLevel]
Display5
Gain3
PRBS
Se
lector3
[Chrusher]
From6
[Pump]
0
60
U(E)
U
[LimSump]
[Sump]
From11
[SpDensidad]
U1 U2
SOL
%S2
[Density]
From14
Gradiente
To Workspace8
[spDensity]
From15
spDensity
To Workspace14
[Level]
From8
Controller
Level
To Workspace
Density
To Workspace9
6
[Power]
From7
Power
To Workspace7
Velocidad
To Workspace6
[Density]
[spLevel]
From10
spLevel
To Workspace1
Display9
[Chancador]
From9
Pebbles
To Workspace3
0
[Speed]
From26
[LimLevel]
From23
LimLevel
To Workspace2
[LimPebbles]
From24
LimPebbles
To Workspace4
Figure 5.14
Simulation set-up for a SAG mill circuit
Simulation examples illustrate the effect of ore feed size distribution and ore
hardness on mill filling level and power draw. Four feed size distributions are con-
sidered in order to demonstrate the effect of these variables. The different feed com-
positions are given in Table 5.2.
Tabl e 5. 2
Feed size distributions
Size distribution
Fines Medium Coarse
1. Normal
62.5
10.7
26.8
2. increased fines and medium and decreased coarse 64.02 13.34
21.64
3. increased fines and coarse and decreased medium 40.63 8.34
51.03
4. no medium size
65.1
0
34.9
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