APRESENTATION

ONSUMMER TRAINING

ATJAYPEE CEMENT

Presented by:

Shashank

7th SEM (ME)

JAYPEE REWA PLANT

Topics For Discussion

• Introduction of company.

• Manufacturing process of cement.

JAYPEE CEMENTS Jaypee cement is a sub division of jaiprakash associates Ltd.

Mr. Jaiprakask Gaur is the Founding father of Jaiprakash

Associates Ltd.

Mr. Manoj Gaur is the Executive chairman of this company.

First plant is Set up in 1986 in REWA District.

3rd largest cement production company in INDIA.

Total cement capacity 21.30 MnTPA.

Capacity of Jaypee Rewa cement plant is 3.50 MnTPA.

Use of cement

Production of mortar.

Production concrete.

Construction works

CEMENT

Made by heating limestone with small

quantities of other material(such as laterite)

to 1450 degC in a kiln.

Resulting hard substance , called ‘clinker’ .

Clinker grounded with small amount of

gypsum to make ’Ordinary Portland Cement’.

RAW MATERIALS

Calcium oxide(CaO)

Silica or (SiO2)

silicon dioxide.

Alumina(Al2O3)

Gypsum(CaSO4.2H20)

Mining of Limestone

Crushing of Limestone

Mixing of Raw materials

Grinding of raw material

Clinkerisation

Grinding of clinker

Packing

Transport

STEPSIN MANUFACTURING

OFCEMENT

Mixing of raw materials

After crushing , the raw materials are mixed .

Depending upon what minerals are in the raw

mixture, there is further addition of desired

minerals such as silica and iron.

Certain types of cement also require alumina

oxide.

The mixture is prepared in terms of fixed ratio.

RAW MILL This section is

working with the fine grinding of raw material .

The size limit is 80-90 microne.

Grinding of raw material is required for proper burning &calcination .

PRE HEATERRaw meal (powder) then goes to pre heater for removal of CO2Preheater temp 850 decg celcius.There are six stage present in preheating tower of first unit at JRP.

ROTARY KILNFrom preheater the powder goes to rotary kiln.The kiln is adjusted at an angle so that the powder moves slowly from top to bottom.The temp of the kiln reaches to about 1600 to 1700 degree celcius.

COAL MILLLarge size of coal is ground to the size of 90 micron.Coal from coal mill is used to feed kiln and calciner.Outlet tem of coal is different in different seasons.

CLINKER

Clinker is the solid material produced by the cement kiln Typically of diameter 3-25 mm It is cooled down to about 60 to 80 deg celcius to obtain quality cement. The clinker goes to the storage area called as clinker silo.

CEMENT MILL

The last stage of cement making is final grinding of clinker.

The grinding is done by two types of mill Ball mill. Vertical roller mill.

BALL MILL Mixture of clinker and gypsum is transferred to a hopper Then is fed to the mill from the hopper. The mixed material then passes to Pre-crushed chamber.Then the material passes to fine grinding chamber.

CEMENT SILOSThere are six cement silos in ‘JAYPEE REWA CEMENT PLANT’capacity of each cement silo is 3000 tons.The cement from silo feed to the bucket elevator.

PACKING PLANT

In this section the cement is extracted from several cement silos and fed to the rotary packer for packing in to the bags. The weight of each bag is 50kg.

There are 4 packers used in old packing plant with the capacity of 80-90 TPH each.

And 3 packers are used in new packing plant with the capacity of 100-120 TPH each.

TRANSPORT

TRANSPORT

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ATTENTION!!

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