Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry (Nov 2014)

TECHNOLOGICAL PROPERTIES OF RAW CLAY BASED CERAMIC TILES: INFLUENCE OF TALC

  • MOUSTAPHA SAWADOGO,
  • LAMINE ZERBO,
  • MOHAMED SEYNOU,
  • BRAHIMA SORGHO,
  • RAGUILNABA OUEDRAOGO

Journal volume & issue
Vol. 15, no. 3
pp. 231 – 238

Abstract

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Local clay from Burkina Faso has been used as a basic raw material in the formulation of ceramic tile with a natural talc (0 - 4% wt) as a flux. The used sintering temperatures are between 950 and 1100 °C with one hour as hold at heating rate of 5 °C∙min-1. The different technological properties (shrinkage, water absorption and mechanical strength) are improved when the sintering temperature exceeds 1000 °C. The mixture with 4% wt of talc provides better properties than the other grades. The tiles obtained at 1050 °C with 4% wt of talc have similar characteristics to those obtained at 1100 °C without talc. An energy gain with a difference of temperature of 50 °C could be made with the use of talc as the adjuvant.

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