3. INTRODUTION OF ACC PVT.
LTD.
ACC Limited Formerly (The Associated
Cement Companies Limited) one of the
largest producers of cement in India. It's
registered office is called Cement House.
It is located on Maharishi Carve Road,
mumbai. The Acc cement established in
1963.
4. CEMENT
Cement is finely ground hydraulic
binding medium for mortar and
concrete, consisting substantially
of compounds of CaO with SiO2,
Al2o3 and ferric oxide which have
been formed by sintering or
fusion. ‘Sintering’ means burning
at a temperature which cause
partial fusion of the material
5. THE MAIN COMPONENT OF CEMENT
Fe2O3
Iron
oxide.
Al2O3
Alumina
SiO2
Silica
CaCO
3
Lime stone
RAW MATERIAL
6. THE CEMENT MANUFACTURING PROCESS
BLASTING : The raw materials that are used to manufacture
cement (mainly limestone and clay) are blasted from the
quarry.
Quarry face
1. BLASTING 2. TRANSPORT
quarry
TRANSPORT : The raw materials are loaded into a dumper.
Next
dumper
loader
7. crushing
conveyor
storage at
the plant
CRUSHING AND TRANSPORTATION : The
raw materials, after crushing, are
transported to the plant by conveyor. The
plant stores the materials before they are
homogenized.
8. THE CEMENT MANUFACTURING PROCESS
RAW GRINDING : The raw materials are very finely
ground in order to produce the raw mix.
1. RAW GRINDING
Raw grinding and burning
conveyor
Raw mix
storage at
the plant
Raw mill
9. 2. BURNING
kiln
cooling
preheating
clinker
BURNING : The raw mix is preheated before it goes
into the kiln, which is heated by a flame that can be as
hot as 2000 °C. The raw mix burns at 1500 °C producing
clinker which, when it leaves the kiln, is rapidly cooled
with air fans. So, the raw mix is burnt to produce clinker
: the basic material needed to make cement.
10. THE CEMENT MANUFACTURING PROCESS
1.GRINDING : The clinker and the gypsum are very finely
ground giving a “pure cement”. Other secondary additives
and cementitious materials can also be added to make a
blended cement.
1. GRINDING
Grinding, storage, packing, dispatch
clinker
storage
Gypsum and the secondary additives are added
to the clinker.
Finish grinding
11. 2. STORAGE, PACKING, DISPATCH
silos
bags
STORAGE, PACKING, DISPATCH :The cement is stored in
silos before being dispatched either in bulk or in bags to its
final destination.