Détails Publication
Optimization of contents of three raw clay materials in formulation of a porcelain,
Auteur(s): Y. Sawadogo, M. Sawadogo, M. Ouédraogo, M. Seynou, G. Lecomte-Nana, P. Blanchart, M. Gomina, L. Zerbo
Renseignée par : ZERBO Lamine
Résumé

Formulation of traditional hard porcelain generally requires 50% kaolin, 25% silica and 25% feldspar. Four porcelains formulation using the casting method, were prepared with different percentages of kaolinitic clay, sand and pegmatite referenced respectively NONG, SAB and PEG. The physico-chemical, mechanical and mineralogical characteristics were evaluated on specimens formulated and sintered at different temperatures from 1200˚C to 1300˚C. X-ray diffraction has revealed the presence of mullite and quartz as essentially crystalline phases. The specimen formulated with 55% NONG, 25% PEG and 20% SAB and sintered at 1240˚C gives better performance (water absorption: 0.17%, density: 2.42, open porosity: 0.42% and flexural strength: 53.54 MPa).

Mots-clés

Raw Minerals, Porcelain, Characterization, Chemical Durability, Phase Transformations

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