Building Ceramics Utilizing Industrial Waste (Cocunut Pith, Tannery Sludge of Fly Ash)

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  • Energy saving bricks incorporating coconut pith, a waste material from the coir industry. The process is as for conventional wire-cut bricks This saves on fuel and ensures homogenous firing of clay, thus ensuing strength and other properties as for conventional bricks
  • Tannery sludge from leather processing industry is incorporated through a reduction firing process (in a special kiln for that purpose) helps to overcome the problem of sludge while ensuring production of good quality bricks. Same process as for wire-cut bricks except for the reduction firing step.
  • Fly ash is flux boded with clay for producing superior quality bricks using this industrial waste accumulating from Burning of Coal. The fly ash content in this process is an high as 85-90% and the brick s also red in color (as conventional bricks) The crushing strength is over 100 kg/cm2 although the cost of production is comparable with wire cut bricks.

Industry classification

Brick Making



Product type




Process used Primary/Secondary Primary
Major machinery used As for wire-cut brick unit
(2) reduction fined kiln
(3) Hydraulic press and high temperature kilns.


All tried out at pilot scale and semi-industrial scale

Year first Licensed

Not Licensed

Economic Information

Minimum Economic size 10,000 Bricks/day
Optimum Investment Rs. 100-105 Lakhs

Major Raw Materials Required

Clay, Tannery, Sludge, flyash, binders and additives

For further information please contact

Regional Research Laboratory (RRL)
Industrial Estate P.O.,
Thiruvananthapuram- 695 019
Kerala, India