Mini Project at Deccan Cements

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  • Topic: Cement kiln, Cement, Portland cement
  • Pages : 31 (10300 words )
  • Download(s) : 160
  • Published : April 4, 2013
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TABLE OF CONTENTS
1. ABOUT THE INDUSTRY
2. CEMENT PRODUCTION PROCESS
3. ROTOPACKER
4. COMPONENTS OF ROTOPACKER
4.1 LOAD CELL
4.2 INDUCTIVE PROXY
4.3 SOLENOID VALVE
4.4 VFD
4.5 UNI-PULSE F800 MIRO-CONTROLLER
4.6 PNEUMATIC CYLINDER
4.7 SOLID STATE RELAY
4.8 MCB
5. ROTOPACKER WORKING
6. ROTOPACKER BLOCK DIAGRAM
6.1 SOLENOID BOX
6.2 CIRCUIT BOX
6.3 POWER SUPPLY BOX
8. ADVANTAGES
9. DIS-ADVANTAGES
10. CONCLUSION
11. REFERENCES

1.ABOUT THE INDUSTRY
Deccan Cements Limited (DCL) by Sri. M.B.Raju and associates in 1979 to set up a mini cement plant. Sri. M.B.Raju is a technocrat entrepreneur anith the cement industry for well over four decades and is well versed with various aspects of cement manufactures and the nitty-gritty of the industry. DCL was the first mini cement plant in the country using the dry process Rotary Kiln Pre-calcinatory technology for the manufacture of Ordinary Portland Cement (OPC) Deccan Cements Ltd is engaged in the manufacturing of cement. The Company is also engaged in hydel power, thermal power and wind farms. The Company’s cement plant and thermal power plant is located in Bhavanipuram, Mahankaligudem. Its hydel power plant is located in Guntur District, Andhra Pradesh and its wind farm is located in Ananthapur District, Andhra Pradesh. As of March 31, 2011, the Company had capacity of 234 million tons of cement.

2.The cement production process:
Block diagram of cement process
Crusher

Stacker and reclaimer

Raw mill

Blending silo

Pre heater

Kiln

Coolers

Clinker silo

Cement mill

Cement silo

Vibratory screen

rotopacker

Cement Production:

Cement is made by heating limestone (calcium carbonate) with small quantities of other materials (such as clay) to 1450 °C in a kiln, in a process known as calcination, whereby a molecule of carbon dioxide is liberated from the calcium carbonate to form calcium oxide, or quicklime, which is then blended with the other materials that have been included in the mix. The resulting hard substance, called ‘clinker’, is then ground with a small amount of gypsum into a powder to make ‘Ordinary Portland Cement’, the most commonly used type of cement (often referred to as OPC). Portland cement is a basic ingredient of concrete, mortar and most non-specialty grout. The most common use for Portland cement is in the production of concrete. Concrete is a composite material consisting of aggregate (gravel and sand), cement, and water. As a construction material, concrete can be cast in almost any shape desired, and once hardened, can become a structural (load bearing) element. Portland cement may be grey or white.

Crusher:
Crusher is used to crush the big limestone pieces into small and required range. Stacker:
A stacker is a large machine used in bulk material handling. Its function is to pile bulk material such as limestone, ores and cereals on to a stockpile. A reclaimer can be used to recover the material. Stackers are nominally rated for capacity in tonnes per hour (tph). They normally travel on a rail between stockpiles in the stockyard. A stacker can usually move in at least two directions: horizontally along the rail and vertically by luffing (raising and lowering) its boom. Luffing of the boom ehavior dust by reducing the distance that material such as coal needs to fall to the top of the stockpile. The boom is luffed upwards as the height of the stockpile increases. Some stackers can rotate the boom. This allows a single stacker to form two stockpiles, one on either side of the conveyor. Stackers are used to stack in different patterns, such as cone stacking and chevron stacking. Stacking in a single cone tends to cause size segregation, with coarser material moving out towards the base. In raw cone ply stacking, additional cones are added next to the first cone. In chevron stacking, the stacker travels along the length of...
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