Characterization and use of raw materials from Burkina Faso in porcelain formulations

Sawadogo, Youssouf; Zerbo, Lamine; Sawadogo, Moustapha; Seynou, Mohamed; Gomina, Moussa; Blanchart, Philippe

doi:10.1016/j.rinma.2020.100085

Cited by 13 publications

(11 citation statements)

References 21 publications

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“…Youssouf et al [5] method was adapted for the experimental methods. The mineralogical composition was obtained with a diffractometer (Philips PW 1710, France) in step scan mode using N-filtered CuKa radiation (1.5406A); wide range x-ray spectra were recorded with a D500.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…At maximum firing temperature, a dwell of 1h is applied before cooling down at a rate of 10 °C/min. Linear Shrinkage (LS) was evaluated by the relative variation of length (L s the initial length and L c the final length) of the tiles using a calliper Equ.1, [5,11].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…This endothermic reaction is related to the escape of interlayer water of mineral phases [23]. The endothermic peaks at 528 °C is more accentuated and extended from 400 to 600 In this temperature range, the breakdown of kaolinite structure leads to the formation of a quasi-amorphous material of metakaolinite [5,24,25], according to equation ( 7):…”

Section: Differential Thermal Analysis (Dta) and Thermogrametry (Tg)mentioning

confidence: 99%

“…Physico-chemical and mineralogical characteristics of the porcelain samples were investigated and the experiments led to the measurement of bulk density, linear shrinkage, water absorption, strength and total porosity. Porcelain is formulated from a typical triaxial mixture usually involving 25wt.% kaolin, 25wt.% silica and 50wt.% feldspar (generally sodium feldspar) for soft porcelain and 50wt.% kaolin clay, 20wt.% silica and 30wt.% feldspar (generally potassium feldspar) for hard porcelain [4][5][6][7]. The kaolin clay fraction shape and provide plasticity and dry mechanical strength during processing.…”

Section: Introductionmentioning

confidence: 99%

“…It contributes to control the sintering process, allowing a virtually zero (< 0.5%) open porosity and low level of closed porosity (<10%). The quartz is used as filler to promoted thermal and dimensional stability due to its high melting point and is involved in recrystallization processes and in liquid phase behaviour [5,8,9].…”

Section: Introductionmentioning

confidence: 99%

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Characterization and Application of Nigerian Clay Raw Resources for Porcelain Formulation and Manufacture

Chidozie¹

2022

J Miner Sci Materials

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Porcelain is a ceramic material made by heating refined minerals (clay) in the form of kaolinite to high temperature in a kiln at temperatures between 1200 °C – 1400 °C thus converting ceramic body irreversibly to hard product, impermeable to water and chemicals. The use of three minerals (kaolin, feldspar and sand) from Nigeria in the formulation and production of porcelain has been investigated in this study, with kaolin bond in the formulation intended to increase the thermal strength of the product. Characterization results showed that the clay contains kaolinite (58%), quartz (15%), rutile (0.5%) and illite (15%). Sample was formulated and shaped by casting into molds and sintered at temperatures ranging from 1200 °C – 1300 °C. Characterization of porcelain specimen sintered at 1250oC showed interesting results: a density ranging from 2.16- 2.25g/cm3 ; open porosity of less than 1.03%; flexural strength above 50MPa and water absorption below 0.5%.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%