JK Lakshmi Cement Ltd began in 1982 in a remote area of Rajasthan. The document outlines the cement manufacturing process, which involves mining limestone, crushing it, preheating and firing in a kiln, grinding the clinker into cement, and packing. The plant has its own power sources like diesel generators and a thermal power plant, as well as receiving external power. The electrical department utilizes modern technologies and computerization.

1. JK LAKSHMI CEMENT LTD.
SUBMITTED BY
Aamir Mohammad

2. CONTENT
• Introduction
• Cement
• Manufacturing process of cement
1. Mines
2. Crusher
3. Stacker & re-claimer
4. VRM
5. Pre-heater & Kiln
6. Cement mill
7. Packing plant
• Electrical power sources

3. INTRODUCTION
 The year-1982.
 The place- a remote area in the zero-industry district of Sirohi
in Rajasthan.
 The story of JK Lakshmi Cement Limited thus began. And as it
has completed more than 29 years of its glorious existence,
the company is renowned for its strength, quality and
performance.

4. CEMENT
 Cement is a mixture of limestone, clay, silica and gypsum. It is
a fine powder which when mixed with water sets to a hard
mass as a result of hydration of the constituent compounds. It
is the most commonly used construction material.
Basic Chemical Components of
Portland Cement:
1.Calcium (Ca)
2.Silicon (Si)
3.Aluminum (Al)
4.Iron (Fe)

5. CEMENT MANUFACTRING PROCESS
1. Mines
 Limestone is the basic raw material for cement
manufacturing.
 Lakshmi cement has got limestone mines spread over
390.625 hectares area.

6. 2. CRUSHING
• The crusher breaks the stone to less then 80 mm. size
and delivers it by a belt conveyer.
• stones greater than 80 mm size is return to the crusher
and fraction of stones less than 20 mm size is throw
away to reject.

7. 3. STACKER AND RECAIMER
• The crushed limestone of less then 80 mm size is stacked &
reclaimed in CIMMCO making continuous stock pile of 60000
MT capacity with blending efficiency of 10:1. Using conveyors
belts, raw material is transferred to hopper.

8. 4. VERTICAL RAW MILL
• Vertical Raw Mill has got four hydraulic rollers and one
horizontal circular disc.
• The material coming from hopper building is grind between
horizontal circular disc & hydraulic rollers.

9. 5. PREHEATER
• From Kiln feed bin the material is feed to 6 stage pre heater.
• Here the material is heated with the help of hot gas
produced in Kiln

10. 6. KILN
• The Kiln has a diameter of 4.27 m. and length is 61 m. with a
slope or inclination of 4%. It has got two sections.
• Burning zone and heating zone.

11. 7. COAL MILL
• The first purpose of fine coal is in main firing which is required
in Kiln main firing so it is only used whenever we have to fire
or light up the Kiln.

12. 8. CEMENT MILL
• Cement mill has got three sections
1. Inlet section
2. Intermediate Diaphragm
3. Outlet Diaphragm
• Cement silo –6

13. 9. PACKING PLANT
• The Lakshmi cement has got two units of packing plant.
one is EEL packer and other is ventomatic packer.
• Bag is filled with 50 kg cement.

14. PLANT LAYOUT

15. ELECTRICAL POWER SOURCES
There are three own source of power plant in JK Lakshmi
cement. They are-
1. Diesel Generators
2. Thermal Power Plant
3. Waste Heat Recovery Power Project
There are outer source of power in JK Lakshmi cement. They
are-
1.RSEB

16. 1. DIESEL GENERATORS
• DG’s generates power at 6.6 KV, which is our working HT
voltage in emergency

17. 2. THERMAL POWER PLANT
• Factory has installed own Power Plant of 18x3 MW.

18. Block Diagram Of Coal Fired Thermal Plant

19. WASTE HEAT RECOVERY BOILER (WHRB)
• The main purpose of installing WHRB plant to use the waste
heat gases of pre-heater to produce the steam by boiler which
is finally send to turbines.
• The capacity of WHRB plant is 15 MW.

20. 132 KV SWITCH YARD and LINE DIAGRAM
PT
Isolator
CT
SF6 CB
Isolator
Power transformer
132/6.6 KV
18/22.5 MVA
L.A.
C.B.

21. CONCLUSION
• So this is all about the learning’s at JK Lakshmi cement within
45days. To do my summer training in such an esteemed
organization like J.K LAKSHMI CEMENT LTD. was a
phenomenal learning experience for me.
• The Electrical department in the industry is well equipped
with latest technologies and equipments. All the working of
various departments is completely computerized.