Chemical Engineering Process in Cement Production
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Transcript of Chemical Engineering Process in Cement Production
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Chemical Engineering Process
in Cement Production
By:Eastern Cement Team:
Eng. Ali S. Al-Qahtani
Eng. Sayd Basheer Shafee
Eng. Haridas Nair
Presented to:
SAUDI ARABIAN SECTION OF AMERICANINSTITUTE OF CHEMICAL ENGINEERS
(SAS-AIChE)on Sunday, December 27, 2009at Le Meridien Hotel, Al-Khobar
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Who Are we?
Our HeadOffice -
Khobar
Our Plant is located at Khrsanih
Three production line of 3.5 mtycement
Joint Stock company listed inTadawul
700 employees
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Saudi Cement Industry
2.46
3.374
2.78
0
0.5
1
1.5
2
2.5
3
3.5
4
2006 2007 2008
DistributedDividend (SRbillions)
Economic Contributions
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Why are we here?
Inform the Chemical EngineeringCommunity about Cement Industry.
Attract Chemical Engineers to start andbuild carriers in Cement industry.
Attract Local Chemical EngineeringResearch in Cement Process.
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Our Business
We Produce and Sell ..
Glue ..
for construction
Cement
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Cement is..
HydraulicBinderSolidify and gain compressive
strength after mixing withwater
It binds gravel and sandto form Artificial RockSold Material
Concrete
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Limestone
There have been huge developments in the
innovation and production of new binder
materials in the last 10 years especially in
the Epoxy chemicals.
HoweverNon can compete with cement and concrete
materials for practicality and economic
feasibility of production and construction
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Cement Production Process
Cement
GrindingSystemsPyroprocessing(Chemical Reactions)
MaterialhandlingSystems
MaterialhandlingSystems
Raw Material
GrindingSystems
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Cement is Very Old Material.
1812
Research byLouis Vicaton
Hydraulic Binders
1824
Invention ofPortland Cement
by Joseph Aspedin
1838
Invention of chemicalEngineering process
by Isaac Johnson
1875
CementStandard by
WilhelmMichaelis
Basic Research and inventions Time Line
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Cement Production Technologies
1830s
Vertical Kilns
1885
Rotary Kilns
1930s
Long Rotary Kilns
1970s
Short Rotary Kilns and
Preheater Technology
2000s
Control and instrumentation
Gears and bearings
Cooling and heat transfer
Material handling systems
Cyclone and filters
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PyroprocessingSystem
Preheater
Rotary KilnCooler
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Preheater
What is happning at thePreheater?
Raw material separationand suspension for heat
absorption.Moisture Removal
Decomposition of CaCO3,MgCO3, formation of CA,C2F and C3S begins.
Formation of C12A7
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Rotary Kiln
Formation of C3A and C4AF begins, decomposition ofCaCO3 completed, free lime reaches maximum
Formation of C2S reaches maximum,C3A and C4AF formation completed
Formation of liquid phase
Formation of C3S, gradual decreaseof free lime content.
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Clinker
Tricalcium silicate (C3S) oralite, dicalcium silicate (C2S)
or belite, tricalcium aluminate(C3A) and tetracalciumaluminoferrite (C4AF) are themain clinker constituents
MINERALOGICAL COMPOSITION OF CLINKER
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Cooler
Cooler
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Final Chemical Process
Addition of GypsumCaSO4.2H2Oto control the setting time of
cement
Raw Material
GrindingSystems
Cement
GrindingSystems
Pyroprocessing(Chemical Reactions)
MaterialhandlingSystems
MaterialhandlingSystems
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Cement Chemical Composition
Cement CompoundWeightPercentage
Chemical Formula
Tricalcium silicate 50 % Ca3SiO5 or 3CaO.SiO2
Dicalcium silicate 25 % Ca2SiO4 or 2CaO.SiO2
Tricalcium aluminate 10 % Ca3Al2O6 or 3CaO.Al2O3
Tetracalciumaluminoferrite
10 % Ca4Al2Fe2O10 or4CaO.Al2O3
.Fe2O3
Gypsum 5 % CaSO4.2H2O
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