7/31/2019 ChristianPfeiffer [Compatibility Mode]

1/21

ChristianPfeiffer

Sustainable development ingrinding technology for efficient

mill performance

Dr. Martin Botsch, MEChristian Pfeiffer Maschinenfabrik GmbH,

Beckum, Germany

I n the name of A l lah, the B enef i cent , the M erci f u l

7/31/2019 ChristianPfeiffer [Compatibility Mode]

2/21

ChristianPfeiffer

7/31/2019 ChristianPfeiffer [Compatibility Mode]

3/21

ChristianPfeiffer

Sharjah Cement factory

Kiln line no. 2 : rated 3,400 t/d2004: Actual 4,000 t/d 1st new mill: 100 t/h

2005: 2nd new mill: 135 t/h2008: Kiln line no. 1 : before conversion 800 t/d

after conversion 2,200 t/d3rd new mill: 150 t/h

7/31/2019 ChristianPfeiffer [Compatibility Mode]

4/21

ChristianPfeiffer

Areas to care for for sustainability in grinding plantperformance:

Mill shell liningDiaphragms

Ball chargeSeparator performance

Conveying and weighing equipment

7/31/2019 ChristianPfeiffer [Compatibility Mode]

5/21

ChristianPfeiffer

1st Mill:Diameter 4,2 m

Grinding path length 13,0 m

1st compartmentgrinding path length 4,5 mdegree of filling 28 30 %ball charge appr. 75 t

lining CPB progressive lifter liners

Accelerate/lift/activate

the ball charge

7/31/2019 ChristianPfeiffer [Compatibility Mode]

6/21

ChristianPfeiffer

Lifting height-decreasing-

Lifting height-maintained-

Conventional liner

Activator liner

7/31/2019 ChristianPfeiffer [Compatibility Mode]

7/21

7/31/2019 ChristianPfeiffer [Compatibility Mode]

8/21

ChristianPfeiffer

7/31/2019 ChristianPfeiffer [Compatibility Mode]

9/21

ChristianPfeiffer

2nd Mill

mill size 4,4 m x 14,0 m grinding path length1st compartment 4,5 m2nd compartment 9,5 mspeed 15,5 min-1 = 75 % critical speeddrive side drive with Flender DMG2Pi 4.400 kW

Intermediate diaphragm with flow control

material and air flow strictly separated

7/31/2019 ChristianPfeiffer [Compatibility Mode]

10/21

ChristianPfeiffer

Uncontrolled materialtransfer into 2nd compartmentMaterial dispersed in air flowthrough central opening

Controlled material transferinto 2nd compartmentMaterial and air flowseparated

7/31/2019 ChristianPfeiffer [Compatibility Mode]

11/21

ChristianPfeiffer

Coarsegrinding

Fine grinding

Max. 5 % residue 1.0 mm

Flow control

Materiallevel

7/31/2019 ChristianPfeiffer [Compatibility Mode]

12/21

ChristianPfeiffer

7/31/2019 ChristianPfeiffer [Compatibility Mode]

13/21

ChristianPfeiffer

Former design

New design (2009)

= 40 50 % more open slot area

7/31/2019 ChristianPfeiffer [Compatibility Mode]

14/21

ChristianPfeiffer

Smooth plate

Plate with lifters

7/31/2019 ChristianPfeiffer [Compatibility Mode]

15/21

ChristianPfeiffer

Diaphragm plates for 3.8 m mill

New design: 40 % increase inopen surface

7/31/2019 ChristianPfeiffer [Compatibility Mode]

16/21

ChristianPfeiffer

Mill Shell Lining System with Progressive Lifter

and Classifying Plates for 2nd compartment

7/31/2019 ChristianPfeiffer [Compatibility Mode]

17/21

ChristianPfeiffer

Pfeiffer CSL Lining system

7/31/2019 ChristianPfeiffer [Compatibility Mode]

18/21

ChristianPfeiffer

3rd mill from SCF:mill 4.6 m x 14.25 m grinding path length, Pi = 5,200 kW

CPB 1

CPB 2

CPB 3

7/31/2019 ChristianPfeiffer [Compatibility Mode]

19/21

ChristianPfeiffer

Separator:

QDK 36-NZ withEMC filter 220.000 m/h

7/31/2019 ChristianPfeiffer [Compatibility Mode]

20/21

ChristianPfeiffer

7/31/2019 ChristianPfeiffer [Compatibility Mode]

21/21

ChristianPfeiffer

Sustainable development ingrinding technology for efficient

mill performance

Dr. Martin Botsch, MEChristian Pfeiffer Maschinenfabrik GmbH,

Beckum, Germany