Performance Data
of Crushing Equipment
Redbook version 4.3
24.09.2007
Metso Minerals (Tampere) Oy
Red Book
Research and Test Centre
VHL 24.9.2007
METSO MINERALS RED BOOK
Performance Data of Nordberg Crushing Equipment
0. Introduction
Metso Minerals Red Book is meant to be used by marketing and service personnel of Metso
Minerals, to help them to apply products and to estimate their performance and operation costs in
use.
The curves published in this file are mainly based on the tests carried out at Metso Minerals
(Tampere) test plant and laboratory. The feed material in most of the tests has been clean, middle
hard granite rock or gravel with different fractions. Tests have been carried out by crushers
working in open circuit.
In the crushing tests the feed fraction depends on the crusher. The maximum feed size has
normally been near by maximum easily crushable feed size of the crusher. The lower limit of the
feed fraction has been equal to close side setting (css) or lower. Only some of the secondary
G-Cone crushers have been tested by zero-based material which is often used in usual crushing
work.
Table of Contents
Rock Tests and Correlations...1
C Jaw Crushers ...2
GP100 and GP100S Cone Crushers ...3
GP200 and GP200S Cone Crushers ...4
G-Cone Crushers, 11 Series...5
GP300 and GP300S Cone Crushers ...6
GP500 and GP500S Cone Crushers ...7
GP550 Cone Crushers...8
Metso Minerals (Tampere) Oy
C Jaw Setting Limits
VHL 9/26/2007 9:46 AM Crusher Min c.s.s. (mm) Max c.s.s. (mm) Min o.s.s. (mm) Max o.s.s. (mm) Max power (kW) Max feed (mm) Att. C80 40 175 64 199 75 410 1/28/2002 JKM C96 60 180 92 212 90 460 8/22/2007 VHL C100 70 250 102 282 110 610 1/28/2002 JKM C106 70 200 102 232 110 560 8/22/2007 VHL C116 70 166 108 204 132 582 8/22/2007 VHL C110 70 200 106 236 132 680 1/28/2002 JKM C3054 70 200 102 232 160 640 8/22/2007 VHL C125 100 250 139 289 160 760 1/28/2002 JKM C140 130 250 172 292 200 860 1/28/2002 JKM C145 125 285 161 321 200 880 1/28/2002 JKM C160 150 285 189 324 250 960 1/28/2002 JKM C200 175 300 225 350 400 1200 1/28/2002 JKM Last changeThis table contains up to date C Series jaw crusher setting limits. If some other document has different information, it is incorrect or old. Minimum close side settings (c.s.s. are valid for Metso Minerals (Tampere) Oy reference material (granite, Wi (Bond) = 15, Shatter = 30, LosA = 20, Crushability = 35) and these values are generally determined by a power limit. The settings are nominal values with new standard jaws. The closed side setting is meant to be shortest distance between the fixed and movable jaws by measuring the setting in accordance with the recommended method for each corresponding set. The maximum feed size is a maximum recommended material size (medium dimension), again also when the crusher is equipped with new jaws. Typically this value is about 80% of the feed opening depth.
Nordberg-Lokomo Oy
GP Cone Setting Limits
JKM 8.8.2005 15:43
Cavity
Stroke
(mm)
Min c.s.s.
(mm)
Max c.s.s.
(mm)
Max power
(kW)
Max
pressure
(bar)
Max feed
(mm) Att.
16
5
18
90
35
32
9.12.1999 KoV
20
6
16
90
35
32
9.12.1999 KoV
25
7
14
90
35
32
9.12.1999 KoV
16
5
17
90
35
40
9.12.1999 KoV
20
6
15
90
35
40
9.12.1999 KoV
25
7
12
90
35
40
9.12.1999 KoV
16
7
20
90
35
85
9.12.1999 KoV
20
9
18
90
35
85
9.12.1999 KoV
25
11
15
90
35
85
9.12.1999 KoV
16
10
20
90
35
105 Not tested
9.12.1999 KoV
20
11
18
90
35
105 Not tested
9.12.1999 KoV
25
12
15
90
35
105 Not tested
9.12.1999 KoV
16
13
24
90
35
120
9.12.1999 KoV
20
15
22
90
35
120
9.12.1999 KoV
25
17
19
90
35
120
9.12.1999 KoV
16
20
43
90
28
170
9.12.1999 KoV
20
24
41
90
28
170
9.12.1999 KoV
25
28
39
90
28
170
9.12.1999 KoV
16
24
48
90
28
210
9.12.1999 KoV
20
29
46
90
28
210
9.12.1999 KoV
25
34
44
90
28
210
9.12.1999 KoV
18
24
46
160
13
230 Not tested
13.12.1999 KoV
25
27
43
160
13
230 Not tested
13.12.1999 KoV
32
30
39
160
13
230 Not tested
13.12.1999 KoV
18
26
52
160
13
270
13.12.1999 KoV
25
29
49
160
13
270
13.12.1999 KoV
32
32
45
160
13
270
13.12.1999 KoV
20
5
23
160
40
35
25.6.1997 KoV
25
7
21
160
40
35
25.6.1997 KoV
30
9
18
160
40
35
25.6.1997 KoV
20
7
24
160
40
70
25.6.1997 KoV
25
9
21
160
40
70
25.6.1997 KoV
30
11
19
160
40
70
25.6.1997 KoV
20
14
28
160
40
100
7.11.1996 KoV
25
16
26
160
40
100
7.11.1996 KoV
30
18
23
160
40
100
7.11.1996 KoV
20
15
29
160
40
170
7.11.1996 KoV
25
17
27
160
40
170
7.11.1996 KoV
30
19
24
160
40
170
7.11.1996 KoV
20
15
29
160
40
150 Not tested
7.11.1996 KoV
25
17
27
160
40
150 Not tested
7.11.1996 KoV
30
19
24
160
40
150 Not tested
7.11.1996 KoV
20
18
32
160
40
190 Not tested
7.11.1996 KoV
25
20
30
160
40
190 Not tested
7.11.1996 KoV
30
22
27
160
40
190 Not tested
7.11.1996 KoV
20
20
51
160
40
190
7.11.1996 KoV
25
25
49
160
40
190
7.11.1996 KoV
30
30
46
160
40
190
7.11.1996 KoV
25
6
22
250
22
32
7.12.1999 KoV
32
8
19
250
22
32
7.12.1999 KoV
40
10
15
250
22
32
7.12.1999 KoV
25
8
28
250
22
50
8.12.1999 KoV
32
11
25
250
22
50
8.12.1999 KoV
40
14
21
250
22
50
8.12.1999 KoV
25
13
29
250
22
100
7.12.1999 KoV
32
15
26
250
22
100
7.12.1999 KoV
40
17
22
250
22
100
7.12.1999 KoV
25
15
29
250
22
120
7.12.1999 KoV
32
17
26
250
22
120
7.12.1999 KoV
This table contains original GP Cone setting limits. If some other document has different information, it is incorrect or old. Minimum
close side settings are valid for Nordberg-Lokomo reference material (granite, Wi (Bond) = 15, Shatter = 30, LosA = 20) and the
value is determined by the power or pressure limit, which gives higher minimum setting. Maximum close side setting is the nominal
value for new liners, when the main shaft is in position 4mm upwards from the lowest position. Manufacturing tolerances cause
variation to the maximum setting.
GP300 M
GP300 MF
GP300 F
GP300 EF
G2211LS
G2211
G1811
G2011
G1211
G811
G411
GP200S EC
GP200S C
GP100 MF
GP100 EF
Last change
GP100S C
GP100S M
GP100 C
GP100 M
GP100 F
Nordberg-Lokomo Oy
GP Cone Setting Limits
JKM 8.8.2005 15:43
Cavity
Stroke
(mm)
Min c.s.s.
(mm)
Max c.s.s.
(mm)
Max power
(kW)
Max
pressure
(bar)
Max feed
(mm) Att.
Last change
25
18
37
250
22
140
7.12.1999 KoV
32
21
34
250
22
140
7.12.1999 KoV
40
24
30
250
22
140
7.12.1999 KoV
25
22
41
250
22
200
8.12.1999 KoV
32
26
37
250
22
200
8.12.1999 KoV
40
30
33
250
22
200
8.12.1999 KoV
18
25
47
250
17
240
8.12.1999 KoV
25
29
44
250
17
240
8.12.1999 KoV
32
33
40
250
17
240
8.12.1999 KoV
40
250
17
240
8.12.1999 KoV
18
28
53
250
17
320
8.12.1999 KoV
25
32
50
250
17
320
8.12.1999 KoV
32
36
46
250
17
320
8.12.1999 KoV
40
250
17
320
8.12.1999 KoV
25
8
27
320
22
35
9.12.1999 KoV
32
10
23
320
22
35
9.12.1999 KoV
40
12
19
320
22
35
9.12.1999 KoV
25
11
30
320
22
70
9.12.1999 KoV
32
13
27
320
22
70
9.12.1999 KoV
40
15
23
320
22
70
9.12.1999 KoV
25
12
32
320
22
110
9.12.1999 KoV
32
15
28
320
22
110
9.12.1999 KoV
40
18
24
320
22
110
9.12.1999 KoV
25
16
42
320
22
140
9.12.1999 KoV
32
20
39
320
22
140
9.12.1999 KoV
40
24
35
320
22
140
9.12.1999 KoV
25
18
47
320
22
170
9.12.1999 KoV
32
22
44
320
22
170
9.12.1999 KoV
40
25
40
320
22
170
9.12.1999 KoV
18
40
77
320
17
320 Not tested
13.12.1999 KoV
25
45
74
320
17
320 Not tested
13.12.1999 KoV
32
50
70
320
17
320 Not tested
13.12.1999 KoV
18
50
82
320
17
420 Not tested
13.12.1999 KoV
25
55
79
320
17
420 Not tested
13.12.1999 KoV
32
60
75
320
17
420 Not tested
13.12.1999 KoV
25
10
27
220
22
Not tested
8.8.2005 JKM
32
12
22
280
22
Not tested
8.8.2005 JKM
40
14
18
315
22
Not tested
8.8.2005 JKM
25
11
35
220
22
75
8.8.2005 JKM
32
14
31
280
22
75
8.8.2005 JKM
40
16
26
315
22
75
8.8.2005 JKM
25
12
38
220
22
100
8.8.2005 JKM
32
15
35
280
22
100
8.8.2005 JKM
40
18
29
315
22
100
8.8.2005 JKM
25
16
41
220
22
140 Not tested
8.8.2005 JKM
32
20
38
280
22
140 Not tested
8.8.2005 JKM
40
24
32
315
22
140 Not tested
8.8.2005 JKM
25
18
43
220
22
200
8.8.2005 JKM
32
22
39
280
22
200
8.8.2005 JKM
40
25
35
315
22
200
8.8.2005 JKM
25
22
46
220
22
250 Not tested
8.8.2005 JKM
32
25
43
280
22
250 Not tested
8.8.2005 JKM
40
28
39
315
22
250 Not tested
8.8.2005 JKM
GP550 C
GP550 EC
GP550 EF
GP550 F
GP550 MF
GP550 M
GP500S EC
GP500S C
GP500 C
GP500 M
GP500 MF
GP500 F
GP500 EF
GP300S EC
GP300S C
GP300 EC
GP300 C
Page 2 of 2
Metso Minerals (Tampere) Oy
Red Book
Research and Test Centre
VHL 24.9.2007
1. Rock Tests and Correlations
This section contains knowledge about rock tests at Metso Minerals (Tampere) rock laboratory,
characteristics of different rock materials, and some correlation curves between different rock test
methods.
Correlation between Flakiness Index (EN933-3) and 1:3 test method (Earlier DIN 52114,
nowadays Shape Index EN 933-4)
For this chart we have carried out 42 crushing tests with GP200S and HP300 crushers and
measured products by both methods. From those tests we get total of 377 points to the chart.
Rock Laboratory
Some years ago we got some new testing equipment to the rock laboratory in Tampere. For the
implementation we made large research project for 12 different rock materials. In the project we
carried out all the rock tests, old and new, in our laboratory and some other tests in Technical
Universities in Tampere and in Helsinki. Summary of the results is printed in a table and all the
correlation charts are based on this table.
Correlation Figures
Due to long history of testing different rocks, it has been possible to create the correlation between
most common rock test methods. This obviously gives us chance to make only those rock tests
that are really required.
There can be seen difference between Tampere and Milwaukee Abrasion Indexes. This results
from the different steel paddles used in Tampere and Milwaukee laboratories.
Also Bond Work Index is in different level if Tampere and Mâcon results are compared. Reason for
this is unclear. Anyway, be sure that you read test result from right laboratory, when it is question
of other tests than Crushability and Abrasiveness.
Liner Lifetime
In this book all the liner lifetimes are based on medium hard granite what has a lifetime factor of 1.
When material to be crushed is tested in our laboratory the liner lifetime factor can be estimated
from this chart. This chart does not give exact number because the abrasion index test is not real
compressive crushing test. Please note that the figure has been changed quite a lot especially in
high abrasive applications. This figure bases on real test data.
Metso Minerals (Tampere) Oy
JKM 28/11/01
Page 1/3
ABRASIVENESS AND CRUSHABILITY
Main principle
The purpose of test is to establish Abrasiveness and Crushability according to NF P18-579.
The Abrasiveness gives an indication of the abrasiveness of the rock material. The
Crushability value can be used for estimating how easily the tested material breaks down.
The Abrasiveness Tester
Test Paddle
The dry and cleaned paddle 50 mm x 25
mm x 5 mm is weighed before the test.
Material
Material for the test:
4 – 6,3 mm
500 g
Test Procedure
The paddle is clamped in the slot of the
hub. A 500 g sample of material to be
tested is placed in the drum. The paddle
rotates for 5 minutes (4500rpm). After 5
minutes rotation the drum is emptied and
the tested material is screened by 1,6 mm
screen. Material which passes 1,6 mm
screen is weighed. The test paddle is also
cleaned and weighed.
Result Calculation
ABR
= (M
before– M
after) * 1000 / 0,5 [g/t]
ABR
=
Abrasiveness
M
before=
the mass of the cleaned and dried test
paddle before the abrasion test
M
after=
the mass of the cleaned and dried test
paddle after the abrasion test
CR
= M-1,6 mm / 500
[%]
CR
=
Crushability
CR
=
percentage of material –1,6 mm after test
M
–1,6 mm=
the mass of material which passes the
screen of 1,6 mm after test
BOWL
TEST PADDLE
Metso Minerals (Tampere) Oy
JKM 28/11/01
LOS ANGELES TEST
Main Principle
The purpose of this test is to establish a Los Angeles value. Los Angeles value gives an
indication of the resistance of material to abrasion and impact.
Los Angeles test (in Nordberg-Lokomo) is based on ASTM -standard C131 - 89 “ Resistance
to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles
machine”.
Los Angeles Machine
The Los Angeles testing machine consists
of a hollow steel cylinder closed at both
ends having inside diameter of 711 mm
and inside length of 510 mm. The machine
rotates 30 (- 33) rpm for 500 revolutions.
On the interior surface of the cylinder there
is a steel shelf plate (height 89 mm), which
carries material and steel spheres until
they are dropped to the opposite side of
the drum.
To the drum with material is also placed 11 steel spheres which average diameter is 47 mm
and each weight between 390 g - 445 g.
Material Preparation
The material to be tested:
9,52 mm - 12,7 mm
2500 g
12,7 mm - 19 mm 2500 g
Total:
5000 g
Test Procedure
The 5000 g test sample with the 11 steel spheres is placed into the Los Angeles machine.
The machine rotates 500 revolutions (takes about 16 minutes). After prescribed number of
revolutions the material is emptied from the drum and the tested material is screened on a
1,68 mm screen. Percentage of material passing through the screen is Los Angeles value.
Result Calculation
Los A - value =
M
-1,68mm/ 5000 g * 100 [%]
M
-1,68mm=
material from Los Angeles machine which
passes a 1,68 mm screen.
Steel sphere
Metso Minerals (Tampere) Oy
JKM 28/11/01
Page 3/3
FLAKINESS INDEX (IN TAMPERE)
Main Principle
The purpose of a Flakiness Index Test is to establish a Flakiness Index for whole sample or
given fractions. Flakiness index announces percentage of flaky particles in the sample.
Measurement of Flakiness Index in Tampere is based on EN –standard (EN 933-3).
Table 1. Screen bars used in flakiness index
FRACTION
(SQUARE
OPENING)
BAR SCREEN
(GRID SPACING)
64*/80
40
50/64*
31,5
40/50
25
32*/40
20
25/32*
16
20/25
12,5
16/20
10
12.7*/16
8
10/12.7
6,3
8/10
5
6.3/8
4
5/6.3
3,15
4/5
2,5
*) Differs from EN-standard.
Test Procedure
Dry sample is sieved for different fractions by using sieve series according to table 1.The
material in each fraction is weighed.
After weighing each fraction is screened by the bar screen, where distance between bars is
also given in the table on the previous page. In each fraction the mass of flaky particles which
pass through the bar screen is weighed.
Result Calculation
Flakiness index announces percentage of flaky particle in the whole sample or in the given
fraction (as the percentage by weight).
An example of calculation:
FRACTION
[MM/MM]
MASS
[G]
BAR SCREEN
[MM]
MASS
[G]
FLAKINESS INDEX
[%]
10/12.5
1 596
6,3
190
11,9
8/10
1 173
5
212
18,1
6.3/8
597
4
120
20,1
5/6.3
338
3,15
67
19,8
4/5
224
2,5
56
24,9
Total:
3 928
---
645
16,4
Metso Minerals (Tampere) Oy
JKM 28/11/01
Bond Work Index [kWh/t]
Crushability [%]
very easy
0-7
very easy
50-easy
7-10
easy
40-50
medium
10-14
medium
30-40
difficult
14-18
difficult
20-30
very difficult
18-
very difficult
-20
Los Angeles value
Ai- 8mm product
very easy
27-
very easy
60-easy
22-27
easy
45-60
medium
17-22
medium
30-45
difficult
12-17
difficult
15-30
very difficult
-12
very difficult
-15
Shatter Index
very easy
40-easy
35-40
medium
30-35
difficult
25-30
very difficult
-25
French Abrasiveness [g/ton]
Abrasion Index
non abrasive
0-100
non abrasive
-0.1
slightly abrasive
100-600
slightly abrasive
0.1-0.4
Crushability Classification
Metso Minerals (Tampere) Oy
FLAKINESS INDEX EN 933-3 vs. SHAPE INDEX EN 933-4
JKM/ 8.10.040
10
20
30
40
50
60
0
10
20
30
40
50
60
Flakiness index (EN 933-3)
S
hape Index (EN 933-4
)
Metso Minerals (Tampere) Oy
ROCK TEST RESULTS OF DIFFERENT ROCK TYPES
JKM/ 8.10.04Finland Finland Finland Finland Finland Germany Finland Finland Finland Cyprus France Finland Finland
Specimen Sorila Lakalaiva Ritakallio Pyhällönvuori Riitiala Hirschentantz Kuru Parainen Koskenkylä Pyhäsalmi Kemi
Stone Granite Mica-gneiss Mica-gneiss Gneiss Plagioclase- Basalt Granite Limestone Tonalite Diabase Limestone Sulphur ore Chrome ore porphyr
Specific gravity (t/m3) 2.69 2.73 2.78 2.72 2.80 3.00 2.64 2.71 2.66 2.77 2.61 4.65 3.71
Shatter index (8mm) 26.6 35.9 29.3 35.0 25.7 24.3 34.5 56.5 21.5 20.7 46.4 79.9 56.1
Shatter index (4mm) 10.9 14.5 11.3 14.0 9.4 8.7 14.3 31.9 9.4 6.7 20.3 58.9 30.1
Los Angeles value 17.2 20.0 15.1 20.9 10.5 8.5 21.8 43.3 11.7 7.2 30.1 59.8 47.1
Los Angeles value (cubicity 100 %) 16.7 19.4 13.6 19.5 9.6 7.8 20.7 42.3 10.9 6.4 29.7 58.2 48.1
Bond Work Index (kWh/t) 16.0 13.9 12.7 14.6 16.1 16.1 13.4 9.5 15.6 22.0 9.3 5.9 7.1
Bond work index maximum 24.9 21.2 27.3 24.9 26.6 21.3 23.5 14.3 29.6 34.6 13.4 10.2 10.2
Lokomo Work Index (kWh/t) 13.7 10.8 10.8 10.1 15.8 14.5 12.9 6.6 14.5 19.1 9.9 4.2 7.9
Lokomo work index maximum 22.2 22.3 22.7 18.7 23.9 27.4 18.4 11.2 22.0 30.7 14.1 8.2 12.3
Abrasion index (Lokomo) 0.82 0.56 0.73 0.48 1.08 0.80 0.82 -0.02 1.10 0.52 0.03 0.24 0.04
-2mm after abrasion test 19.4 23.0 17.4 26.6 11.2 8.8 19.8 70.1 11.8 11.2 54.5 81.8
-8mm after abrasion test 22.8 27.0 18.8 32.2 16.9 14.2 23.0 98.3 15.0 13.9 66.0 93.4 97.2
Anisotropy index 1.16 1.36 1.21 3.19 1.06 1.04 1.15 1.23 1.05 1.80 1.14
Schmidt hammer value (boulder) 56 63 55 65 63 60 66
Schmidt hammer value (solid) 58 59 54 56 59 59 61
Grain size medium medium medium medium medium fine medium coarce fine medium medium
Strenght by
microscopic examination medium-good soft-medium medium medium soft-medium medium medium-good soft soft-medium good soft soft
Nordic ball mill 11.4 14.3 8.8 18.2 5.8 7.7 8.4 49.6 5.1 8.2 37.3
Uniaxial compressive strength (MPa) 193.9 63.7 260 89 284 125.5 76.9 308.4
Young's modulus (GPa) 70 72.4 81.5 60.5 87.7 57.5 70.2 73.4
Poisson's ratio 0.25 0.27 0.24 0.26 0.25 0.21 0.26 0.23
Tensile strength (MPa) 13.5 11.4 17.6 13 22.8 12.9 6.3 19.9
Metso Minerals (Tampere) Oy
LOS ANGELES value vs. CRUSHABILITY
JKM 8.10.040
10
20
30
40
50
60
70
80
90
100
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Los Angeles value
C
rushability [%
]
Metso Minerals (Tampere) Oy
Ai -8 mm vs. CRUSHABILITY
JKM / 8.10.0410
20
30
40
50
60
70
80
C
rushabilit
y
Metso Minerals (Tampere) Oy
LOS ANGELES value vs. UCS
JKM/25.10.040
50
100
150
200
250
300
350
400
450
0
5
10
15
20
25
30
35
40
45
50
Los Angeles value
U
niaxial Compressive Strength [MPa
]
Metso Minerals (Tampere) Oy
LOS ANGELES value vs. NORDIC BALL MILL
JKM/ 25.10.040
5
10
15
20
25
30
35
40
45
50
0
5
10
15
20
25
30
35
40
45
50
Los Angeles
N
ordic Ball M
ill
Metso Minerals (Tampere) Oy
CRUSHABILITY vs. BOND WORK INDEX (Tampere lab.)
JKM / 8.10.040
5
10
15
20
25
30
35
0
10
20
30
40
50
60
70
80
Crushability
B
ond Work Index [kWh/ton] Tampere la
b
Metso Minerals (Tampere) Oy
CRUSHABILITY vs. BOND WORK INDEX (Mâcon lab.)
JKM / 8.10.045
10
15
20
25
30
35
B
ond Work Index [kWh/ton] Macon la
Metso Minerals (Tampere) Oy
TAMPERE vs. MILWAUKEE ABRASION INDEX
JKM / 8.10.040.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Metso Minerals (Tampere) Abrasion Index [Ai]
M
etso Minerals (Milwaukee) Abrasion Index [A
i]
Metso Minerals (Tampere) Oy
ABRASION INDEX vs. ABRASIVENESS
JKM 8.10.040
500
1000
1500
2000
2500
3000
3500
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
Metso Minerals (Tampere) Abrasion Index [Ai]
A
brasiveness (g/
Metso Minerals (Tampere) Oy
TAMPERE Ai vs. SiO
2
content
JKM / 8.10.040
10
20
30
40
50
60
70
80
90
100
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Metso Minerals (Tampere) Abrasion Index
S
iO
2
content [%
]
Metso Minerals Abrasiveness [g/ton]
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Metso Minerals (Tampere) Oy
INDICATIVE LIFETIME FACTOR
JKM 8.10.0414:010.1
1
10
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
Metso Minerals (Tampere) Abrasion Index
L
ifetime facto
r
Lifetime Factor
Metso Minerals Abrasiveness [g/ton]
Metso Minerals (Tampere) Oy
Properties of Crushed Material
JKM 25.10.04Material to be crushed must be brittle like rock. That means that the tensile strength is about 10% of the compressive strength.
0
50
100
150
200
250
300
350
400
450
500
550
600
0
1000
0
2000
0
3000
0
4000
0
5000
0
6000
0
7000
0
8000
0
9000
0
10000
0
11000
0
12000
0
Young's modulus (MPa)
C
ompressive strength (MPa
)
0 10 20 30 40 50 60 70 80 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 1000 0 1100 0 1200 0 1300 0 1400 0 1500 0 1600 0 1700 0 (kpsi) (kps i) Test results Conrete LitteratureAccepted Area
for Compressive
Crushing
Sigma2/E<1.5 and Sigma<400 MPa
Metso Minerals (Tampere) Oy
Red Book
Research and Test Centre
VHL 26.9.2007
2. C Jaw Crushers
Capacity
The capacities of C jaw crushers are based on field tests carried out by some of middle size jaw
crushers. The other sizes are calculated by a computer program analogous to these field tests.
The capacities in this chart are maximum momentary capacities for clean, medium hard granite
with a product bulk density of 1.6 t/m
3. The upper limit of the feed fraction is equal to 80% of the
feed opening and the lower limit is equal to closed side setting. The capacities are shown
according to both closed side setting (css) and open side setting (oss). The setting has been
measured from top to valley with gravel jaws (C80-C125) and from top to top with quarry jaws
(C140-C200). The capacity curves are shown only for valid setting range by new jaw dies.
The long-term capacity depends on the feeding system, jaw plate wear and ability of the operating
personnel. In practice these momentary values must be reduced. A normal reduction is about
20-40%.
Product Gradation
The jaw crusher section includes also the general product gradation chart for all jaw crushers. This
is based on Richards diagram, where the crusher product includes 68% of fractions smaller than
css. This is valid for normal feed fraction (lower limit equal to css and upper limit equal to 80% of
the feed opening). If there is fine fractions in the feed, the product includes also more fines.
To find out the right product gradation for specific css:
1.
Find the point, where css (vertical line) crosses 68% (horizontal line).
2.
Draw parallel curve to the other curves crossing this point. This curve is the product gradation
to be found.
Power Consumption
The power consumption chart is indicative for C jaw crushers. The power consumption depends on
the rock material and the feed fraction.
Life Time of Jaw Dies
The lifetime of jaw dies depends on the material to be crushed. In this chart values are valid for
medium hard granite (Lokomo Ai = 0.5, SiO
2content = 70%).
The lifetime of side plates is 3 ... 4 times the lifetime of jaw dies.
Correction Figures
Metso Minerals (Tampere) Oy
JKM /08.08.05
EXAMPLES OF USING REDBOOK CORRECTION FACTORS
FOR C JAW TYPE OF CRUSHER
In this chapter, the use of correction factors has been presented more
precisely. It should be noted that there are still different factors that
effect on the C jaw performance than just the given ones. For example,
jaw profile type (measuring method of CSS), wear rate of liners, open
side setting etc. have always a meaningful effect on jaw performance.
Bruno v3 process simulation program uses these correction factors.
EXAMPLE 1: Use of POWER correction factors.
Use of power correction curves has been shown with the help of an example. In this example,
selected crusher is C110, used CSS = 100-mm. To get comparable power results, C110 is
used in two different applications, which are:
Application 1 (later case-1): Feed curve 200/600, rock crushability 30%
Application 2 (later case-2): Feed curve 0/400, rock crushability 50%
Both feed curves, case-1 and case-2, have been shown in figure 1. Feed fraction 50%
passing point (F
50) has been also drawn in figure 1. In this example,
F
50(case-1) = 380-mm
F
50(case-2) = 120-mm
Figure 1. Two different feed curves, case 1 and case 2.
To get nominal average power value for C110 (CSS 110-mm), power as a function of CSS
has to be defined with the help of figure 2.
Metso Minerals (Tampere) Oy
VHL /24.09.07
In this example, nominal value (motor size recommendation) is 120-140 kW (see figure 2).
Please note that there is complete power figure (motor size figure), for C jaw range in
Redbook.
Figure 2. Nominal motor size of C110 crusher.
Final power correction curve has been shown in figure 3. To find right correction factor, a
crushing work ratio (CWR50) has to been defined. Crushing work ratio is calculated by the
formula;
Metso Minerals (Tampere) Oy
JKM /08.08.05
Figure 3. Power correction factor for C jaw series. Moisture content 0…1,5%.
The power consumption estimation is now calculated as a multiplication of nominal power and
power correction factor.
Indicative average power (case-1) = 0.97 x 130 kW = 126 kW
Indicative average power (case-2) = 0.50 x 130 kW = 65 kW
This power is valid, when the jaw crusher is choke fed. The average power draw is lower if
choke feed cannot be arranged.
EXAMPLE 2: Use of CAPACITY correction factors.
Use of capacity correction curves has been presented with the help of an example. Same
cases have been used as in example 1. Feed fraction 50% passing points were like follows;
F
50(case-1) = 380-mm
F
50(case-2) = 120-mm
Before using correction factors, nominal capacity for C110 crusher has to be defined (CSS
100-mm). Nominal capacity can be read from the C jaw performance curve, figure 4.
In this example, the nominal capacity is;
Capacity = 260 mtph
Due to fluctuation of feed gradation, rock material, moisture, wear part-wearing etc., the
recommended electric motor size has to be confirmed by factory.
Metso Minerals (Tampere) Oy
JKM /08.08.05
Figure 4. Nominal capacity curves for C jaw crushers.
Capacity correction curves have been shown in figure 5. To find out the right correction factor,
a crushing work ratio (CWR50) has to be defined. Crushing work ratio is calculated by the
formula;
CWR50 = F
50/CSS.
CWR50 (case-1) = 380-mm/ 100-mm = 3.8, rock material crushability 30%
CWR50 (case-2) = 120-mm/ 100-mm = 1.2, rock material crushability 50%
Metso Minerals (Tampere) Oy
JKM /08.08.05
Average capacity (case-1) = 0.92 x 260 mtph = 240 mtph
Average capacity (case-2) = 0.94 x 260 mtph = 245 mtph
Final results are indicative.
EXAMPLE 3: Use of product gradation correction factors.
Correction figures for max particle size* in product of C jaw has been presented in this
section. Previously used example cases have been utilised also in this example. Crusher feed
fraction 80% passing point and closed side setting sets the maximum product size* in
different applications.
*Max product size = Middle dimension of maximum product particle size (95-98-%
passing), defined by square screen opening. In practise there are lot of fluctuation in
feed system of jaw crusher. This means that there are few precents of product size,
which is bigger than calculated maximum particle size (2-5-% oversize, lumps).
These "lumps" are such that the middle and maximum dimensions are remarkably
bigger than the shortest dimension. Thus, the particle looks like a plate. Lump size
isn't limiting the feed into secondary cone crusher.
In given applications, the feed grading F
50points were;
F
50(case-1) = 380-mm
F
50(case-2) = 120-mm
Instead of these points, feed fraction 80-passing point has been used to describe the
development of product maximum. In given examples the F
80points were;
F80 (case-1) = 480-mm
F80 (case-2) = 240-mm
Product gradation correction factors have been shown in figure 6. To find right correction
factor, a crushing work ratio (CWR80) has to been defined. Crushing work ratio is calculated
by the formula;
CWR80 = F
80/CSS.
CWR80 (case-1) = 480-mm/ 100-mm = 4.8, rock material crushability 30%
CWR80 (case-2) = 240-mm/ 100-mm = 2.4, rock material crushability 50%
Metso Minerals (Tampere) Oy
JKM /08.08.05
Figure 6. Product gradation correction factors for GP-cone crusher. Moisture content
0…1,5%.
Product maximum particle size factors according to figure 6 are;
Case 1: 2.0
Case 2: 1.25
This final value for product maximum product size is got when the previously given factor is
multiplied by the jaw crusher setting (css). Finally, the maximum product sizes has been
calculated in following:
Metso Minerals (Tampere) Oy
C Jaw Capacity, CSS
VHL 9/26/2007 10:03 AMFeed material granite. Feed fraction lower limit is equal to css and upper limit is equal to max. feed size. Open circuit.
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
40
60
80
100
120
140
160
180
200
220
240
260
280
300
Closed Side Setting (mm)
Ca
pa
c
ity
(MTP
H
)
C200 C160 C145 C140 C125 C3054 C110 C116 C106 C100 C96 C80Metso Minerals (Tampere) Oy
C Jaw Capacity, OSS
VHL 9/26/2007 10:03 AMFeed material granite. Feed fraction lower limit is equal to css and upper limit is equal to max. feed size. Open circuit.
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
Open Side Setting (mm)
Ca
pa
c
ity
(MTP
H
)
C200 C160 C145 C140 C125 C3054 C110 C116 C106 C100 C96 C80Metso Minerals (Tampere) Oy
C Jaw Capacity 1, CSS
VHL 9/26/2007 10:17 AMFeed material granite. Feed fraction lower limit is equal to css and upper limit is equal to max. feed size. Open circuit.
0
50
100
150
200
250
300
350
400
450
500
550
600
40
50
60
70
80
90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250
Closed Side Setting (mm)
Ca
pa
c
ity
(MTP
H
)
C3054 C110 C116 C106 C100 C96 C80Metso Minerals (Tampere) Oy
C Jaw Capacity 2, CSS
VHL 9/26/2007 10:17 AM0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
40
60
80
100
120
140
160
180
200
220
240
260
280
300
Ca
pa
c
ity
(MTP
H
)
C200 C160 C145 C140 C125 C3054 C110Metso Minerals (Tampere) Oy
C Jaw Capacity
VHL 9/26/2007 10:21 AMSetting
Product Capacity (MTPH)
(CSS) C80 C96 C100 C106 C116 C110 C125 C140 C145 C3054 C160 C200 40 mm 63 t/h 50 mm 80 t/h 60 mm 97 t/h 120 t/h 70 mm 114 t/h 140 t/h 150 t/h 168 t/h 185 t/h 190 t/h 240 t/h 80 mm 131 t/h 160 t/h 171 t/h 190 t/h 207 t/h 212 t/h 268 t/h 90 mm 148 t/h 180 t/h 192 t/h 213 t/h 230 t/h 235 t/h 295 t/h 100 mm 165 t/h 200 t/h 213 t/h 235 t/h 252 t/h 257 t/h 290 t/h 323 t/h 110 mm 182 t/h 220 t/h 233 t/h 257 t/h 274 t/h 279 t/h 314 t/h 351 t/h 120 mm 199 t/h 240 t/h 254 t/h 280 t/h 297 t/h 302 t/h 338 t/h 378 t/h 130 mm 216 t/h 260 t/h 275 t/h 302 t/h 319 t/h 324 t/h 362 t/h 400 t/h 414 t/h 406 t/h 140 mm 233 t/h 280 t/h 296 t/h 324 t/h 341 t/h 346 t/h 386 t/h 427 t/h 442 t/h 434 t/h 150 mm 250 t/h 300 t/h 317 t/h 346 t/h 363 t/h 368 t/h 410 t/h 454 t/h 470 t/h 462 t/h 520 t/h 160 mm 267 t/h 320 t/h 338 t/h 369 t/h 386 t/h 391 t/h 434 t/h 481 t/h 498 t/h 489 t/h 550 t/h 170 mm 284 t/h 340 t/h 358 t/h 391 t/h 408 t/h 413 t/h 458 t/h 508 t/h 527 t/h 517 t/h 581 t/h 180 mm 360 t/h 379 t/h 413 t/h 435 t/h 482 t/h 535 t/h 555 t/h 545 t/h 611 t/h 779 t/h 190 mm 400 t/h 436 t/h 458 t/h 506 t/h 563 t/h 583 t/h 572 t/h 641 t/h 816 t/h 200 mm 421 t/h 458 t/h 480 t/h 530 t/h 590 t/h 611 t/h 600 t/h 672 t/h 853 t/h 210 mm 442 t/h 554 t/h 617 t/h 639 t/h 702 t/h 890 t/h 220 mm 463 t/h 578 t/h 644 t/h 667 t/h 733 t/h 927 t/h 230 mm 483 t/h 602 t/h 671 t/h 695 t/h 763 t/h 965 t/h 240 mm 504 t/h 626 t/h 698 t/h 723 t/h 793 t/h 1002 t/h 250 mm 525 t/h 650 t/h 725 t/h 752 t/h 824 t/h 1039 t/h 260 mm 780 t/h 854 t/h 1076 t/h 270 mm 808 t/h 884 t/h 1113 t/h 280 mm 836 t/h 915 t/h 1151 t/h 290 mm 864 t/h 945 t/h 1188 t/h 300 mm 1225 t/h
Feed material granite. Feed fraction lower limit is equal to ccs and upper limit is equal to max. feed size. Open circuit.
Metso Minerals (Tampere) Oy
C jaw Capacity factor
JaR JKM 9/26/20070.7
0.75
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
1
1.5
2
2.5
3
3.5
4
F50/Setting (mm/mm)
Red Book CAPACITY correction factor
Crushability 20% Crushability 30% Crushability 40% Crushability 50%
Metso Minerals (Tampere) Oy
C Jaw Electric Motor Design
VHL 9/26/2007 10:34 AMFeed material granite. Feed fraction lower limit is equal to css and upper limit is equal to max. feed size. Open circuit.
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
Closed Side Setting (mm)
M o tor S ize [k W ]
C80
C100
C106
C110
C125
C140
C145
C160
C200
C96
C3054
C116
Metso Minerals (Tampere) Oy
C Jaw Power factor
JaR JKM 9/26/20070.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1
1.5
2
2.5
3
3.5
4
4.5
5
F50/Setting (mm/mm)
Red Book correction factor
Crushability 20% Crushability 30% Crushability 40% Crushability 50%
Metso Minerals (Tampere) Oy
C Jaw Product Gradation
JKM 8.8.2005 14:28Feed material granite. Feed fraction lower limit is equal to css and upper limit is equal to max. feed size. Open circuit.
0
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
9
Square Screen Opening (mm)
Percent
Passing
2
4
8
16
32
64
128
256
1.25 1.6 2 2.5 3.15 4 5 6.3 8 10 12.5 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400
CSS
Metso Minerals (Tampere) Oy
C Jaw Maximum Product Size Correction Factor.
JaR / JKM 8.8.2005Gradation correction factor is INDICATIVE. Particle size is defined according to particle middle dimension.
0,6
0,8
1
1,2
1,4
1,6
1,8
2
2,2
2,4
2,6
2,8
3
0
1
2
3
4
5
6
7
Feed 80% [mm] / CSS [mm]
Max. product particle size / CSS
Crushability 20
Crushability 30
Crushability 40
Crushability 50
Metso Minerals (Tampere) Oy
Lifetime of Fixed Jaw (a)
VHL 9/26/2007 11:18 AMFeed material medium hard granite, specific gravity 2.7 t/m3,
Metso Minerals (Tampere) Oy Ai 0.5, Metso Minerals Abrasiveness 1000 g/ton, SiO2 content 70%, moisture < 2-%.
10000
100000
1000000
0
50
100
150
200
250
300
350
Closed Side Setting (mm)
A
verage Lif
e
ti
me of
Jaw D
ie (
tons)
C116
C80
C100
C106
C110
C3054
C96
Metso Minerals (Tampere) Oy
Lifetime of Moving Jaw (a)
VHL 9/26/2007 11:18 AM10000
100000
1000000
0
50
100
150
200
250
300
350
A
verage Lif
e
ti
me of
Jaw D
ie (
tons)
C116
C80
C106
C100
C110
C3054
C96
Metso Minerals (Tampere) Oy
Lifetime of Fixed Jaw (b)
JKM 20.12.04 13:10Feed material medium hard granite, specific gravity 2.7 t/m3,
Metso Minerals (Tampere) Oy Ai 0.5, Metso Minerals Abrasiveness 1000 g/ton, SiO2 content 70%, moisture < 2-%.
100000
1000000
10000000
0
50
100
150
200
250
300
350
Closed Side Setting (mm)
A
verage Lifetime of Jaw Die (tons
)
C125
C140
C145
C160
C200
Metso Minerals (Tampere) Oy
Lifetime of Moving Jaw (b)
JKM 20.12.04 13:10Feed material medium hard granite, specific gravity 2.7 t/m3,
Metso Minerals (Tampere) Oy Ai 0.5, Metso Minerals Abrasiveness 1000 g/ton, SiO2 content 70%, moisture < 2-%.
100000
1000000
10000000
0
50
100
150
200
250
300
350
Closed Side Setting (mm)
A
verage Lifetime of Jaw Die (tons
)
C125
C140
C145
C160
C200
Metso Minerals (Tampere) Oy
Red Book
Research and Test Centre
VHL 24.9.2007
3. GP100 and GP100S Cone Crushers
Capacity
The capacities based on field tests. The capacity, power and pressure values of individual tests
have been analysed together and the corresponding charts are based on this analysis. The
capacity chart includes maximum momentary capacities in following conditions:
•
The product bulk density is 1.6 t/m
3.
•
The feed material is medium hard granite.
•
The crushing cavity is full all the time.
•
The feed material is clean and dry.
•
The feed fraction corresponds to the feed fraction in the footer of the chart.
If the conditions are different from above:
•
If the feed material bulk density differs from 1.6 t/m
3, the coefficient for bulk density is
actual bulk density
t
m
_
_
.
1 6
3.
•
If the feed material is extremely hard or extremely soft, the capacity is a little bit lower or a bit
higher.
•
The moisture content of the feed material has an effect in the fine crushing. If the humidity is
higher than 3%, the packing in the crusher is more probable and it decreases the capacity.
•
In normal situation if the feed includes fine fractions, it increases the capacity up to 30%. If
the feed fraction is extreme coarse, the capacity must be reduced by 10%.
The long-term capacity depends on the feeding system, liners wear and ability of the operating
personnel. In practice these momentary values must be reduced. A normal reduction is about
20-40%.
The capacity lines shown are only valid for setting range by new liners.
Power and Pressure
The power chart and the pressure chart are based on the same field tests as the capacity chart.
Product Gradation and Product Cubicity
The product gradation chart and the product cubicity chart are examples of a couple of tests.
Life Time of Liners
The lifetime of liners depends on the material to be crushed. In this chart values are valid for
medium hard granite (Lokomo Ai = 0.5, SiO
2content = 70%).
In this chart the lifetime is the medium value of the lifetimes of mantle and bowl liner. The deviation
can be +/-25% of the curve.
Correction Figures
Metso Minerals (Tampere) Oy
JKM /15.12.04
EXAMPLES OF USING RED BOOK CORRECTION FACTORS
FOR GP-CONE TYPE OF CRUSHER
In this chapter, the use of correction factors has been presented more
precisely. It should be noted that there are still different factors that
effect on the GP-cone performance than just the given ones. For
example, cavity profile type, wear rate of liners, eccentric shaft speed
etc. have always a meaningful effect on GP-cone performance.
Bruno v3 process simulation program uses these correction factors.
EXAMPLE 1: Use of POWER correction factors.
Use of power correction curves has been shown with the help of an example. In this example,
selected crusher is GP300 M, used CSS = 20-mm, and Stroke = 25-mm. To get comparable
power results, GP300 M is used in two different applications, which are:
Application 1 (later case-1): Feed curve 10/100, rock crushability 50%
Application 2 (later case-2): Feed curve 20/60, rock crushability 30%
Both feed curves, case-1 and case-2, have been shown in picture 1. Feed fraction 50%
passing point (F
50) has been also drawn in figure 1. In this example,
F
50(case-1) = 70-mm
F
50(case-2) = 43-mm
Figure 1. Two different feed curves, case 1 and case 2.
The GP300M power draw estimation in given applications starts from the definition of nominal
power draw. This is made with the help of figure 2. Please note that there are separate power
draw figures for each crusher and cavity in Redbook.
In the given example (GP300 M, CSS 20-mm, Stroke 25-mm) the nominal value is 155 kW.
Example, GP300 M Feed Curves
0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100
Square Screen Opening [mm]
C umulative Passing [% ] CASE 1 CASE 2 Case 2, F50 = 43-mm Case 1, F50 = 70-mm
Metso Minerals (Tampere) Oy
JKM /15.12.04
Figure 2. Nominal power consumption of GP300 M crusher.
Power correction curve has been shown in figure 3. To find right correction factor, a crushing
work ratio (CWR50) has to been defined. Crushing work ratio is calculated from the formula;
CWR50 = F
50/CSS.
CWR50 (case-1) = 70-mm/ 20-mm = 3.5, rock material crushability 50%
CWR50 (case-2) = 43-mm/ 20-mm = 2.15, rock material crushability 30%
GP300 M Power
40 60 80 100 120 140 160 180 200 220 240 260 280 12 14 16 18 20 22 24 26 28 30 32 Setting (mm) P ower (kW ) Power Limit Stroke 40 mm Stroke 32 mm Stroke 25 mm 155 kWPower Correction Factor. GP300-series
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 R
ed Book POWER correction facto
r Crushability 20% Crushability 30% Crushability 40% Crushability 50% CASE 2 CASE 1 0.90 0.71
Metso Minerals (Tampere) Oy
JKM /15.12.04
The power consumption estimation is now calculated as a multiplication of nominal power and
power correction factor.
Average power (case-1) = 0.71 x 155 kW = 110 kW
Average power (case-2) = 0.90 x 155 kW = 140 kW
EXAMPLE 2: Use of CAPACITY correction factors.
Use of capacity correction curves has been presented with the help of example. Same cases
have been used as in example 1. Feed fraction 50% passing points were like follows;
F
50(case-1) = 70-mm
F
50(case-2) = 43-mm
Before using correction factors, nominal capacity for GP300 M crusher has to be defined
(CSS 20-mm and Stroke 25-mm). Nominal capacity can be read from the GP300 M
performance curve, figure 4.
In this exercise, nominal capacity is;
Capacity = 180 mtph
Figure 4. Nominal capacity curves for GP300 M cone crusher.
GP300 M Capacity 120 140 160 180 200 220 240 260 280 300 320 12 14 16 18 20 22 24 26 28 30 32 Setting (mm) C apacity (MTPH ) Stroke 40 mm Stroke 32 mm Stroke 25 mm 180 mtphDue to fluctuation of feed gradation, rock material, moisture, wear part-wearing etc., the
recommended electric motor size is approximately 1.2-1.5 times calculated average power.
Metso Minerals (Tampere) Oy
JKM /15.12.04
Capacity correction curves have been shown in figure 5. To find out the right correction factor,
a crushing work ratio (CWR50) has to be defined. Crushing work ratio is calculated from the
formula;
CWR50 = F
50/CSS.
CWR50 (case-1) = 70-mm/ 20-mm = 3.5, rock material crushability 50%
CWR50 (case-2) = 43-mm/ 20-mm = 2.15, rock material crushability 30%
Figure 5. Capacity correction factors for GP-cone crusher. Moisture content 0…1,5%.
The capacity estimation is now calculated as a multiplication of nominal capacity and capacity
correction factor.
Average capacity (case-1) = 0.82 x 180 mtph = 148 mtph
Capacity Correction factor. GP-cones
0.6 0.7 0.8 0.9 1 1.1 1 1.5 2 2.5 3 3.5 4 F50/Setting (mm/mm) R
ed Book CAPACITY correction fact
or Crushability 20% Crushability 30% Crushability 40% Crushability 50% 0.99 0.82 Case 2 Case 1
Metso Minerals (Tampere) Oy
JKM /15.12.04
EXAMPLE 3: Use of product gradation correction factors.
Use of product gradation correction factor has been presented in this section. Previously used
example case has also been utilised in this exercise. Feed fraction 50% passing points in
GP300 M were like follows;
F
50(case-1) = 70-mm
F
50(case-2) = 43-mm
Product gradation correction factors have been shown in figure 6. To find right correction
factor, a crushing work ratio (CWR50) has to been defined. Crushing work ratio is calculated
from the formula;
CWR50 = F
50/CSS.
CWR50 (case-1) = 70-mm/ 20-mm = 3.5, rock material crushability 50%
CWR50 (case-2) = 43-mm/ 20-mm = 2.15, rock material crushability 30%
Figure 6. Product gradation correction factors for GP-cone crusher. Moisture content
0…1,5%.
Product Gradation correction factors according to figure 6 are;
Case 1: 1.03
Case 2: 1.15
This correction factor is used to multiply the setting to change the position of grading curve in
logarithmic figure. Output curves as function of setting for GP300 M has been shown in figure
7.
Product Gradation Correction for GP-Cones
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1 1.5 2 2.5 3 3.5 4 F50/Setting (mm/mm) R
ed Book correction facto
r Crushability 20% Crushability 30% Crushability 40% Crushability 50% 1.03 1.15 Case 1 Case 2
Metso Minerals (Tampere) Oy
JKM /15.12.04
Figure 7. GP300 M grading curves.
To find out the effect of feed fraction and material crushability, previously calculated gradation
correction factors are used as follows:
Case 1: 20-mm x 1.03 = 20,6 mm
Case 2: 20-mm x 1.15 = 23 mm
In practise, this means that when the 20-mm setting is used in cases 1 and 2, the product
gradation is little bit coarser in both cases.
Original and Case 2 corrected product gradations have been shown in figure 8.
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 -4 -3 -2 -1 0 1 2 3 4 5 6 7
Square Screen Opening (mm)
P ercent Passin g Setting 15 mm Setting 20 mm Setting 25 mm Feed 0.125 0.25 0.5 1 2 4 8 16 32 64 0 .0 8 0 .1 0.12 5 0 .1 6 0 .2 0 .2 5 0 .31 5 0 .4 0 .5 0 .6 3 0 .8 1 1.2 5 1 .6 2 2.5 3.1 5 4 5 6.3 8 10 12. 5 16 20 25 32 40 50 64 80 10 0 20-mm setting 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 P ercent Passin g Setting 20 mm Feed 0 .0 8 0 .1 0 .12 5 0 .1 6 0 .2 0 .2 5 0 .31 5 0 .4 0 .5 0 .6 3 0 .8 1 1.2 5 1 .6 2 2.5 3.1 5 4 5 6.3 8 10 12. 5 16 20 25 32 40 50 64 80 10 0 20-mm setting Case 2
Metso Minerals (Tampere) Oy
Gradation Correction factor. GP-cones
JaR / JKM 2.11.04Gradation correction factor is INDICATIVE
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
1
1.5
2
2.5
3
3.5
4
F50/Setting (mm/mm)
R
ed Book correction facto
r
Crushability 20%
Crushability 30%
Crushability 40%
Crushability 50%
Crushability 60%
Metso Minerals (Tampere) Oy
Capacity Correction factor. GP-cones
JaR / JKM 2.11.04Capacity correction factor is INDICATIVE
0.6
0.7
0.8
0.9
1
1.1
1
1.5
2
2.5
3
3.5
4
F50/Setting (mm/mm)
R
ed Book CAPACITY correction facto
r
Crushability 20% Crushability 30% Crushability 40% Crushability 50%
Metso Minerals (Tampere) Oy
Power Correction GP100-series
JaR/JKM2.11.040.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1
1.5
2
2.5
3
3.5
4
4.5
5
F50/Setting (mm/mm)
R
ed Book correction facto
r
Crushability 20% Crushability 30% Crushability 40% Crushability 50%