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Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal...

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Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan. 11/01/2013 1 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati
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Page 1: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Characterization of fly ash generated from Bakreswar

Thermal Power Plant

Dr. Arabinda Mondal

Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

 11/01/2013    1Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati

Page 2: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

What is Fly Ash?

Fly  ash  is  finely  divided  residue  generated  in the    combustion  of  powdered  coal  and transported by the flue gases and collected by electrostatic precipitator.

11/01/2013 2Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati

Page 3: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Classification of Fly Ash

According to ASTM C-6181. Class F fly ash2. Class C fly ash

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 3

Page 4: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Fly ash – Hazards to Environment and Life

Fly  ash  contains  trace  amounts  of  toxic metals like Th, Cr, Pb, Hg, Cd, Mn, Cu, Co, As, etc.,  which  may  have  negative  effect  on human health and on plants.

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 4

Page 5: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Physico-chemical properties of Bakreswar fly ash

• Particle size: 0.5-27.3 µm• Surface area: 75 m2/g• Specific gravity: 2.11• pH value: 10.30• Carbon content: 0.59 %

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 5

Page 6: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Chemical analysis of Bakreswar fly ash

Oxides Wt%SiO2 62.05Al2O3 30.10CaO 3.50Na2O3+K2O 1.50Fe2O3 2.50LOI 0.73MgO TraceSO4 Trace11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 6

Page 7: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

X-ray Diffraction analysis on Bakreswar fly ash

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 7

Page 8: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Scanning Electron Micrograph (SEM) of Bakreswar fly ash

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 8

Page 9: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Conclusion • From the compositions of fly ash sample, it can be concluded that the fly ash sample belongs to ASTM class F. 

• Fly ash particles are almost totally spherical in shape, allowing them to flow and blend freely in mixtures. 

• Pozzolanic properties of fly ash can be identified by presence/absence of calcium oxide. So class F fly ash is the weak in pozzolanic as very less amount of calcium oxide present. 

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 9

Page 10: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Prospects of Bakreswar Fly ash Utilization 

1. Production of building materialsPortland fly ash cementPortland cement clinkerSintered fly ash aggregate for concreteLime fly ash bricksClay fly ash building 

bricks

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 10

Page 11: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

2. Road and air field pavement    construction

Fly ash in road construction

Embankment

Lime fly ash concrete

Cement fly ash concrete

Lime fly ash soil stabilization11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 11

Page 12: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

3. Filler material in the reclamation of land and              in mining

4. Plant nutrient

5. Manufacture of paints

6. Preparation of domestic cleansing powders

8. Manufacture of rubber and plastics as filler

10/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 12

Page 13: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

8.   Development of Fly Ash Based Polymer    Composites as Wood Substitute

9.   Manufacture of Different ceramic waresRoof tiles (glazed/unglazed)Glazed floor and wall tilesManufacture of Sanitaryware

10.  Ceramic fibers, decorative glass,     contineous casting mould 

powders, etc.11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 13

Page 14: Characterization of fly ash generated from Bakreswar Thermal Power Plant Dr. Arabinda Mondal Department of Silpa-Sadana, PSV, Visva-Bharati, Sriniketan.

Thank you

11/01/2013 Dr. Arabinda Mondal, Assistant Professor, Department of Silpa-Sadana, PSV, Visva-Bharati 14


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