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Application of Blast Based M2L model
in Barrick ZaldivarCarlos Muñoz, Jair Alarcón, Felipe Contreras, Daniel Toro BBS & Technology Management, Orica Mining Services-LatinAmerica
Richard Palape, Javier Estay
Mine Superintendence, Barrick Zaldivar
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The focus of operations units?
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Mine to Leach Focus
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M2L history in Zaldivar
Baseline M2L
CMZ & OMS (>6”)
2007 2008 2009 2010 2011 2012
M2L
(>6”4”)
M2L(4”3”)
M2L Project
KPI SERVICES
P r o j e c t s D e v
e l o p m e n t
M2L-1ra etapa
M2L-2da etapa
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M2L first stage (6” 4”) Objectives
Value creation in mine to plant proccesses from drill and blast improvement.
The focus;
1° Crusher
Shovel performance
Dumpleach recovery
Wall Control
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200
300
400
5 0 0 500
6 0 0
600
7 0 0
8 0 0
800
9 0 0
900
1 0 0 0
1000
1 1 0 0
1100
1 2 0 0
1200
1 3 0 0
1300
1 4 0 0
1400
1 5 0 0
1500
1 6 0 0
1600
1 7 0 0
1700
1 8 0 0
1800
1 9 0 0
1900
2 0 0 0
2000
2 1 0 0
2100
2 2 0 0
2200
2 3 0 0
2 3 0 0
2 4 0 0
2 5 0 0
M2L blast designs
SD = 1.17
SD = 1.17
VOD
Vp
Vp
VOD
SD = 1.17
SD = 1.17
VOD
Vp
Vp
VOD
Distribución de Energía &
Modelling
Alimentación Óptima Planta Hidrometalúrgica
0
20
40
60
80
100
120
1 10 100 1000
Tamaño (mm)
% P
a s a n t e A c u m u l a d o
Habitual Óptima
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Metallurgical test
0
200
400
600
800
1.000
1.200
1.400
1.600
1.800
2.000
m e s 0
m e s 1
m e s 2
m e s 3
m e s 4
m e s 5
m e s 6
m e s 7
m e s 8
m e s 9
m e s 1 0
m e s 1 1
m e s 1 2
m e s 1 3
m e s 1 4
m e s 1 5
m e s 1 6
m e s 1 7
m e s 1 8
m e s 1 9
m e s 2 0
m e s 2 1
m e s 2 2
m e s 2 3
m e s 2 4
m e s 2 5
m e s 2 6
m e s 2 7
m e s 2 8
m e s 2 9
m e s 3 0
m e s 3 1
m e s 3 2
m e s 3 3
m e s 3 4
m e s 3 5
m e s 3 6
C o
b r e
f i n o p a r c
i a l ( t )
0
5
10
15
20
25
30
35
40
45
50
% E
x t r a c c
i ó n
C u
T a c u m .
Cu fino parcial producido de ROM cargado al inicio año 1 (actual P80 6")
Cu fino parcial producido de ROM cargado al inicio año 1 (Proyecto P80 4")
Extracción de cobre acumulada (Kelsall) actual (P80 6'')Extracción de cobre acumulada (Kelsall) Proyecto (P80 4'')
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Benefits first stage
Total Benefits > 18 MUSD/y
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Objectives
P80 ≤ 3”
Shovel performance 3,750-3,850 (ton/h)
(current 3,650 ton/h)
1° Crusher performance 3200 TPHef(current 3,000 ton/h)
Increase Dumpleach recovery
M2L second stage (4” 3”)
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M2L blast design methodology
Short term
Geology
Design &
modelling
Drill data
Geotechnics data
apply to D&B
Long term
Geology
D&B design
methods
A LT L Plaz o B 30 95 M4 2 D ur ez a C . U niax ia l( Mp a)
CLO 3% Blanda 0-25
BT 30% Semi dura 25-75
SIL 67% Blanda 0-25
BLOQUES CPlazo B3095 M42
Alta Ley (A) 43%Dump Le ach (DL) 57%
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Shovel
performance
1° crusher
performanceDumpleach
Vibration &
KPI-Stability
Fragmentation
Results &Benefits
M2L results & benefits control
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Demoblast – Study Area
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Demoblast results
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Dump Leach (Kelsall)
Demoblast results
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Projected benefits
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M2L Advanced services at Zaldivar