Synthesis of cordieritic materials using raw kaolin, bauxite, serpentinite/olivinite and magnesite

Thomaidis, E.; Kostakis, G.

doi:10.1016/j.ceramint.2015.04.039

Cited by 25 publications

(8 citation statements)

References 24 publications

(45 reference statements)

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“…In addition, due to its low dielectric constant and thermal expansion coefficient, cordierite is widely used as an excellent electric insulator and high-thermal resistant material. In previous studies [33,34], it was reported that thermal expansion of cordierite is 2.2 × 10 −6 / • C, while the others reported the value of around 3.3 × 10 [36,37] and 2.2-4.5 × 10 −6 / • C [38].…”

Section: Introductionmentioning

confidence: 94%

Effect of alumina addition on the phase transformation and crystallisation properties of refractory cordierite prepared from amorphous rice husk silica

Sembiring¹,

Simanjuntak²,

Situmeang³

et al. 2017

Journal of Asian Ceramic Societies

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The effect of alumina addition of 5-30% by weight on phase transformation and crystallisation properties of refractory cordierite ceramics prepared from amorphous rice husk silica followed by sintering treatment at temperature of 1230 • C was studied. The crystallinity and microstructure of the samples were characterised using X-ray diffraction (XRD) coupled with Rietveld analysis, scanning electron microscopy (SEM), respectively. Some physical properties include density, porosity, hardness, bending strength, and thermal expansion coefficient of the samples with different alumina additions were measured. The results show that addition of alumina promoted crystallisation of cordierite into crystalline spinel, corundum, cristobalite, in which with addition of 10-30% alumina, the cordierite phase was practically undetected. Addition of alumina was also found to increase the amount of spinel, while corundum and cristobalite decreased following alumina addition of 10-30%. The presence of spinel, corundum, and cristobalite resulted in increased of density, hardness, bending strength and thermal expansion coefficient, while for porosity, the opposite was observed. Thermal expansion coefficient of the samples with alumina addition of 15-30% reach the relatively constant value of 9.5 × 10 −6 / • C, with the main crystalline phase was spinel, accompanied by corundum and cristobalite in smaller quantities.

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Section: Introductionmentioning

confidence: 94%

Effect of alumina addition on the phase transformation and crystallisation properties of refractory cordierite prepared from amorphous rice husk silica

Sembiring¹,

Simanjuntak²,

Situmeang³

et al. 2017

Journal of Asian Ceramic Societies

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“…At the same time, basic refractories can also be used in various fields as excellent robust material, resistant to heat and electricity, as well as good heat conductor [12]. To date, several research projects have been devoted to the recovery of materials in the field of ceramics, in particular the development and characterization of basic refractory ceramics due to their high refractory quality and their resistance to erosion and corrosion of metals and oxides [13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Effects of Lizardite Addition on Technological Properties of Forsterite-Monticellite Rich White Ceramics Prepared From Natural Magnesite and Dolomite

Manni

Harrati

Haddar

et al. 2020

Preprint

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Lizardite rich peridotite has never been used to prepare ceramic specimens, especially in Morocco. For this raison, potential use of naturally abundant lazirditic material from the Rif domain (NW morocco), as a supply for ceramic industry, has been evaluated. The effects of lizardite addition to magnesite and dolomite mixtures on the thermomechanical properties of the calcined ceramics were also detailed. To achieve this target, natural lizardite, magnesite and dolomite samples were collected in ultrabasic Beni Bousra massif. Those raw samples were used for the synthesis of a forsterite-monticellite rich ceramics. Both raw and sintered samples were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM) and fourier transform infrared (FTIR). Main physical and mechanical properties were assessed and correlated to their respective microstructural changes. The obtained results showed that both magnesite and dolomite were mainly composed of MgCO3 and CaCO3. In contrast, lizardite sample showed high amounts of silica, magnesia and iron oxide. Technological tests indicated that the prepared mixtures had increased flexural strengths. An increased amount of lizardite in the initial mixtures enhanced mechanical properties of the prepared ceramic specimens. The same data showed that lizardite has led to a decrease in linear shrinkage during calcination and subsequently, the production of ceramics with the required technological properties. Thus, the preparation of lizardite-based ceramics from the raw material deposits of the Rif area, Morocco, is technically feasible, economically justifiable and socially desirable due to the contribution to the economic growth of the raw materials sector, especially ceramic industry.

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“…Liu et al [79] have studied the thermal decomposition kinetics of magnesite from thermogravimetric data. Thomaidis and Kostakis [108] have prepared cordieritic materials using raw kaolin, bauxite, serpentinite/olivinite and magnesite. The ceramic materials resulted after firing were investigated regarding their phases composition and physical properties of technological interest.…”

Section: Magnesia Ceramicsmentioning

confidence: 99%

“…The effects of sintering temperature on the pore structure, size and distribution as well as on the main properties of spinel ceramic supports such as flexural strength, nitrogen permeation flux and chemical resistance were investigated. Thomaidis and Kostakis [108] Synthesis of cordieritic materials using raw kaolin, bauxite, serpentinite/olivinite and magnesite…”

Section: Study Of Mineral Composition Microstructure Thermal Expansmentioning

confidence: 99%

Review on the elaboration and characterization of ceramics refractories based on magnesite and dolomite

Sadik

Moudden

Bouari

et al. 2016

Journal of Asian Ceramic Societies

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One of the most important elements of furnaces, boilers and other heating units is the structure (lining), usually made of silica-alumina, basic or special refractories. The basic refractories are materials that are increasingly in demand and whose manufacturing involves necessarily the use of MgO and CaO. In this article, the description and characterization of magnesite (MgCO 3) and dolomite (Mg,Ca(CO 3) 2) and their contribution in industrial ceramics-refractories have been reviewed.

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Synthesis of cordieritic materials using raw kaolin, bauxite, serpentinite/olivinite and magnesite

Cited by 25 publications

References 24 publications

Effect of alumina addition on the phase transformation and crystallisation properties of refractory cordierite prepared from amorphous rice husk silica

Effect of alumina addition on the phase transformation and crystallisation properties of refractory cordierite prepared from amorphous rice husk silica

WITHDRAWN: Effects of Lizardite Addition on Technological Properties of Forsterite-Monticellite Rich White Ceramics Prepared From Natural Magnesite and Dolomite

Review on the elaboration and characterization of ceramics refractories based on magnesite and dolomite

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