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

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

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

The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.

OK OK

OK

OK OK OK OK OK

OK

OK

OK

OK OK

OK

OK

OK

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OK OK

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OK

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OK OK

OK

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OK OK

OK

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OK

OK

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OK OK

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OK

OK

OK mill references: more than 130 sold worldwide

OK OK

OK

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

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?

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

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 5000Blaine

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

Sp

ec.

po

wer c

on

s.

(kW

h/

t)

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

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

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

11 29 April 2015

MAAG MAX Drive up to 14 MW. Siemens MultipleDrive up to 16 MW.

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

Bla

ine m

²/

kg

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

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

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

% (

Actu

al /

Guara

nte

e)

Capacity Blaine

Fast time to guaranteed production

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

The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.

17 29 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

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

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

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 5000Blaine

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

Sp

ec.

po

wer c

on

s.

(kW

h/

t)

PT Semen Gresik

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

21 29 April 2015 Capability 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