Presentation from the AFCM cement conference taking place from 21-24 April in Hanoi, Vietnam: Successful commissioning of the OK vertical roller mill at PT Semen Gresik in Indonesia

1. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
Successful commissioning
of
the OK vertical roller mill
at
PT Semen Gresik in Indonesia
By Rune Damborg Hurttia
General Manager,
FLSmidth A/S
1

2. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
The OK mill at PT Semen Gresik
2

3. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
3
The unique OK mill
1. Best grinding efficiency
of any VRM on the market
2. Most versatile & reliable VRM
3. PT Semen Gresik
Commissioning result

4. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
OKOK
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OK mill references:
more than 130 sold worldwide
OK
OK
OK

5. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
5
Why choose the OK mill?
1. Best grinding efficiency
of any VRM on the market
2. Most versatile & reliable VRM
3. PT Semen Gresik
Commissioning result

6. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
The grinding portion is significantly different from all cement grinding
machines on the market
How?

7. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
7
Pressure distribution in
the OK mill grinding bed
Roller
Table
Dam ring
Nozzle
ring
Pre-compression zone
De-aeration zone
Grinding zone 180MPa

8. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
15
20
25
30
35
40
2500 3000 3500 4000 4500 5000
Blaine
4000 Blaine
~30kWh/t
3250 Blaine
~25kWh/t
3250 Blaine
~28kWh/t
4000 Blaine
~34kWh/t
Specific power consumption for mill, fan and separator
Best grinding efficiency:
OK vs. mills with flat rollers
Spec.powercons.(kWh/t)

9. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
9
Why choose the OK mill?
1. Best grinding efficiency
of any VRM on the market
2. Most versatile & most
reliable VRM
3. PT Semen Gresik
Commissioning result

10. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700
OK 25-3
OK 27-4
OK 30-4
OK 33-4
OK 36-4
OK 39-4
OK 42-4
OK 51-6
OK 54-6
OK 58-6
OK 62-6
'
t/h
t/h
OK mill capacity range
(reference OPC cement)
1300 kW
1800 kW
2350 kW
3000 kW
3750 kW
4600 kW
5500 kW
6500 kW
7800 kW
9500 kW
11000 kW
For Slag,
+20%
motor size

11. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
OK Mill – Drive options
Conventional gear solution up to 8-9 MW MAAG CEM Drive
up to 14 MW
1129 April 2015
MAAG MAX Drive up to 14 MW. Siemens MultipleDrive up to 16 MW.

12. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
Demonstrated fineness on OK mill
0
100
200
300
400
500
600
700
CEM I
OPC
CEM II
PLC
SLAG
Blainem²/kg

13. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
A
B
C
E
F
G
H
I
J
K
L
M
N
O
P
Feed
Clinker
Gypsum
Limestone
Pozzolane
Slag
Fly ash
Trass
Adaptable to all variations of
feed compositions

14. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
OK 33-4 operation with
2 and 4 rollers

15. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
≤ 5
weeks
≤ 4
weeks
≤ 3 weeks ≤ 2 week ≤ 1 week
90%
95%
100%
105%
110%
115%
120%
A B C D E F G H I J
Plant
%(Actual/Guarantee)
Capacity Blaine
Fast time to guaranteed
production

16. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
60 mm
Adjustable fulcrum shaft
Eccentric bushing allows change of roller position on table
extending the running time of the mill between refurbishment

17. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
1729 April 2015
Why choose the OK mill?
1. Best grinding efficiency
of any VRM on the market
2. Most versatile & reliable VRM
3. PT Semen Gresik
Commissioning result

18. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
PT Semen Gresik OK 42-4

19. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
PT Semen Gresik OK mill
Performance
Tuban Mill size: OK 42-4
Ordinary OPC cement Performance figures
Guaranteed Achieved
Composition:
Clinker 95% 95%
Gypsum 5% 3%
Lime stone 2%
Grinding aid Yes No
Production, tph 250 253
Blaine cm2/g 3500 3555
Specific energy consumption
Mill (kWh/t) 17.0
Separator (kWh/t) 0.1
Fan (kWh/t) 6.9
Total (kWh/t) 26.8 24.0

20. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
15
20
25
30
35
40
2500 3000 3500 4000 4500 5000
Blaine
4000 Blaine
~30kWh/t
3250 Blaine
~25kWh/t
3250 Blaine
~28kWh/t
4000 Blaine
~34kWh/t
Specific power consumption for mill, fan and separator
Best grinding efficiency:
OK vs. mills with flat rollers
Spec.powercons.(kWh/t)
PT Semen Gresik

21. The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
PT Semen Gresik
Performance on PPC
2129 April 2015Capability presentation
PT Semen Gresik OK 42-4
Blended cement PPC: Clinker: 74.5%
Gypsum: 3.4%, Limestone: 3.3%, Trass:
18.8%
Achieved
Grinding aid No
Production tph 302
Blaine 3690
Specific energy consumption
Mill (kWh/t) 13.5
Separator (kWh/t) 0.1
Fan (kWh/t) 5.3
Total (kWh/t) 18.9