PRESENTATION ON USE OF MARBLE SLURRY AS A PART SUBSTITUTE OF LIMESTONE IN A CEMENT PLANT - PowerPoint PPT Presentation

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PRESENTATION ON USE OF MARBLE SLURRY AS A PART SUBSTITUTE OF LIMESTONE IN A CEMENT PLANT

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Title: PRESENTATION ON USE OF MARBLE SLURRY AS A PART SUBSTITUTE OF LIMESTONE IN A CEMENT PLANT


1
PRESENTATION ON USE OF MARBLE SLURRY AS A PART
SUBSTITUTE OF LIMESTONE IN A CEMENT PLANT
  • BY
  • NAVEEN SHARMA
  • JK LAKSHMI CEMENT LTDJAYKAYPURAM

2
THE STUDY
  • The present paper is based on the use of marble
    slurry available at the Abu Road town of Sirohi
    District in Rajasthan in Cement process.
  • Sirohi district generates about 9000 tonnes
    slurry per annum i.e. about 2 of total
    generation in Rajasthan.
  • The findings of the study may differ from place
    to place depending up-on the characteristics of
    the marble deposits available in the region.

3
AGENDA
  • REQUIREMENT OF LIMESTONE IN A CEMENT PLANT
  • GENERATION OF MARBLE SLURRY
  • COMPARISION OF MARBLE SLURRY AND LIMESTONE
    ANALYSIS
  • BENEFITS IN USE OF MARBLE SLURRY
  • CONSTRAINTS IN USE OF MARBLE SLURRY IN A CEMENT
    PLANT

4
CEMENT
  • India is the second largest producer of cement in
    the world with installed capacity of 153.59
    million tons per annum (MTPA) produced from 127
    cement plants.
  • Rajasthan was the largest producer state of
    cement with annual production (2004-2005) of
    18.66 (14.6) million ton in the country after
    Andhra Pradesh

5
REQUIREMENT OF LIMESTONE
  • CEMENT PLANT REQUIRES 1.4-1.6 MT LIMESTONE FOR
    PRODUCTION OF ONE TON OF CLINKER
  • THE PRESENT PRODUCTION CAPACITY OF CEMENT PLANTS
    SITUATED IN RAJASTHAN IS ABOUT 18.5 MTPA i.e.
    APPROX. 27.5 MTPA LIMESTONE IS CONSUMED PER
    ANNUM.

6
GENERATION OF MARBLE SLURRY
  • AS PER AN ESTIMATE ABOUT 2.5 MTPA MARBLE STONE
    IS PROCESSED IN RAJASTHAN.
  • MARBLE SLURRY IS GENERATED _at_ 150-200 KG/TON OF
    STONE PROCESSED.
  • THE TOTAL GENERATION OF MARBLE SLURRY WORKS OUT
    TO BE ABOUT 0.5 0.6 MTPA i.e. 2 OF LIMESTONE
    REQUIRED BY THE CEMENT PLANTS IN RAJASTHAN.

7
COMPARISION OF MARBLE SLURRY AND LIMESTONE
LABORATORY ANALYSIS
8
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9
BENEFITS IN USE OF MARBLE SLURRY
  • Resource conservation
  • Freedom from disposal problem of slurry
  • No secondary pollution due to prolonged storage
    in open
  • No land pollution affect on fertility
  • Improved vegetation
  • Ground water recharging

10
CONSTRAINTS IN USE OF MARBLE SLURRY
  • HIGH MOISTURE CONTENT (ABOVE 8 POSE PROBLEM IN
    FEEDING)
  • HIGH CONTENT OF MAGNISIUM (ABOVE 2.5 CREATES
    HIGH LINEAR EXPANSION)
  • TRANSPORTATION COST FROM GENERATION POINT TO THE
    USER PLANT

11
CONSTRAINTS IN USE OF MARBLE SLURRY
  • RAINY SEASON
  • FINENESS OF MARBLE SLURRY IS VERY HIGH AS
    COMPARED TO LIMESTONE USED AND REQUIRES
    MODIFICATION IN RAW MILL FEED CIRCUIT TO CONTROL
    FUGITIVE DUST AND CONTROLLED FEEDING. (Additional
    Cost)

12
CONSTRAINTS IN USE OF MARBLE SLURRY
  • GRAIN SIZE OF DOLOMITE ABOVE 150 MICRON POSE
    PROBLEM IN POOR COMBIABILITY DURING CALCINATION
    AND RESULTS INTO INCREASE OF FINES GENERATION IN
    PRODUCT REQUIRE MINERALISER (ADDITIONAL COST)
  • NO ORGANISED STORAGE OF SLURRY AND DISPOSAL
    MECHANISM

13
STEPS REQUIRED FOR INCREASED UTILISATION OF
MARBLE SLURRY
  • GENERATING UNITS SHOULD ESTABLISH SEPARATE STOCK
    YARD FOR THE MARBLE SLURRY TO CONTROL THE
    DISPOSAL FROM THE CENTRAL POINT.

14
STEPS REQUIRED FOR INCREASED UTILISATION OF
MARBLE SLURRY
  • DEWATERING ARRANGEMENT AT THE GENERATION POINT
    BEFORE SHIFTING TO THE CENTRAL YARD. IN CASE OF
    HIGH MOISTURE THE SLURRY CAN BE SUN DRIED IN THE
    YARD BEFORE DELIVERY TO THE USER UNITS.
  • FREE TRANSPORTATION FROM WASTE GENERATING UNITS
    TO THE USER PLANTS

15
SUMMARY
  • THE MARBLE SLURRY GENERATED FROM THE MARBLE UNITS
    CAN BE USED IN A CEMENT PLANT IN MEANINGFUL
    PURPOSE IF THE GENERATOR UNITS FUL FILL THE
    REQUIRED QUALITY CRITERION MENTIONED PARTICULARLY
    MOISTURE CONTENT AND PROVIDED AT THE USER FACTORY
    PREMISES.

16
WITH A HOPE THAT TODAYS DISCUSSIONS SHALL LEAD
TO MAKING RAJASTHAN LAND MARBLE SLURRY FREE
THANKS !
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