Separation of Cenospheres from Fly Ashes by Floatation Method

Authors

  • L. M. Manocha Department of Materials science Sardar Patel University, Vallabh Vidyanagar-388120 Gujarat, India
  • K. A. Ram Department of Materials science Sardar Patel University, Vallabh Vidyanagar-388120 Gujarat, India
  • S. M. Manocha Department of Materials science Sardar Patel University, Vallabh Vidyanagar-388120 Gujarat, India

DOI:

https://doi.org/10.18321/ectj72

Abstract

Fly-ashes are non-combustible mineral residues which are produced from coal in thermal power plants.
Four different types of fly ashes were collected from different power station in Gujarat. Characterization
through SEM shows that fly ash contains cenosphere i.e. gas bubble containing ceramic particle independent
of their bulk density. Floatation technique was used for the separation of cenosphere from fly ash. Two
solvents with extremely different densities were used for the separation of cenospheres. All methods gave
approximately yield of less than 1% cenosphere in fly ash. Color of cenospheres varied from gray to almost
white and the value of density range from 0.4 – 0.8 g/cc. Further, chemical composition analysis revealed
that cenospheres do not contain any high concentration of hazardous elements.

References

1. Wolfe,R.W., Gjinolli, A., Durability and Strength of cement-bonded wood particle composites made from construction waste. Journal of Forest Products 49(2);1999: p24.

2. Watts,G.R., Godfrey,N.S. Effects on roadside noise levels of sound absorptive materials in noise barriers. Applied Acoustic 58:1999; p; 385.

3. Sarkar,R.Rano, Mishra,K.K. and Mazumder.A. Characterization of Cenospheres Collected from Ash-pond of a Super Thermal Power Plant A. Energy Sources, Part A, 30: p. 271.

4. Ling-ngee, Ngu, Hongwei, Wu, and Dong-ke, Zhang. Characterization of Ash Cenospheres in Fly Ash from Australian Power Stations.

5. Fazil Marickar, Y. M., Lekshmi, P.R., Luxmi, Varma and Koshy, Peter. Urological Research Symposium on medicine, EDAX versus FTIR in mixed stone, p. 271 .

6. Wang,De Ju, Tang, Yi, An Gang Dong, Ya Hong Zhang, Ya Jun Wang. Hollow Cancrinite Zeolite Spheres in situ Transformed from Fly Ash Cenosphere. Chinese Chemical Letters Vol. 14, p. 12.

7. Xiaozheng, Yu, Zheng, Xu and Zhigang, Shen, Metal copper films deposited on cenosphere particles by magnetron sputtering method. IOP Publishing 40 (2007).

8. Chavez, J. F., Morales R., and Lastra, R. Q., Vila, D. A., Recovery of Cenospheres and Magnetite Power Plant Fly Ash. ISIJ 27 (1987).

9. Mondal, D. P., Das, S., Ramakrishnan, N. and Uday Bhasker, K., ICAMC Oct 24-2 (2007).

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Published

2011-04-22

How to Cite

Manocha, L. M., Ram, K. A., & Manocha, S. M. (2011). Separation of Cenospheres from Fly Ashes by Floatation Method. Eurasian Chemico-Technological Journal, 13(1-2), 89–95. https://doi.org/10.18321/ectj72

Issue

Vol. 13 No. 1-2 (2011)

Section

Articles

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