Effect of bauxite addition on densification and mullitization behaviour of West Bengal clay

Raut, N. S.; Biswas, Prosenjit; Bhattacharya, Tanmay; Das, Kaberi

doi:10.1007/s12034-008-0156-4

Cited by 15 publications

(3 citation statements)

References 12 publications

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“…Nevertheless, apparent porosity shows a slight decrease with the increase in firing temperature, as has already been reported. 46 The increase in coffee waste produces an increase in apparent porosity, causing a decrease in bulk density. Later in this paper, these results will be associated with an improvement of thermal insulating properties.…”

Section: Resultsmentioning

confidence: 99%

Reusing coffee waste in manufacture of ceramics for construction

Fonseca

Vilão

Galhano

et al. 2013

Advances in Applied Ceramics

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This paper aims at studying the influence of different clay/coffee waste mixtures in structural ceramics by incorporating different amounts of spent coffee grounds as an additive. Clay paste with 5, 10, 15 and 20 wt-% of coffee waste was used to mould clay bodies, which were then fired at the temperatures of 900, 1000 and 1100uC. Morphological aspects were evaluated through SEM images, while several laboratory tests provide the physical and mechanical properties. Incorporation of coffee waste increases the water absorption and apparent porosity, and increasing the firing temperature causes an overall decrease in pore size. Samples with up to 10% coffee waste are in the highest grade of mechanical strength standards. The addition of 20% decreases by 70% the thermal conductivity value. The coffee waste residues could be used as a secondary clay raw material to form proper bricks with excellent thermal insulation proprieties.

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Section: Resultsmentioning

confidence: 99%

Reusing coffee waste in manufacture of ceramics for construction

Fonseca

Vilão

Galhano

et al. 2013

Advances in Applied Ceramics

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“…In this case, the maximum cold crushing strength attained can well be attributed to the high amount of fluxing agents present in the raw material due to the significantly low alumina content relative to the related studies [7], [8], [10], [11].…”

Section: Resultsmentioning

confidence: 77%

Mechanical Properties of Fireclay Bricks from Binaliw Clay

Baygan

Abellana

2022

ARME

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Binaliw clay, considered to be local waste from crushing and quarrying operations, was utilized to produce fireclay bricks. The chemical and mineralogical composition of the raw material were determined through various tests. Clay samples were prepared by milling, sieving, molding, drying, and sintering from 8000C to 11000C at 1000C intervals for 2 hours. Mechanical properties such as cold crushing strength, volume firing shrinkage, apparent porosity, and bulk density were identified through the appropriate ASTM standards. It was found out that the aforementioned properties, except apparent porosity, increased with increasing temperature- apparent porosity decreased on the contrary. The polymorphic transformations of kaolin and quartz to mullite and cristobalite supported the trends of the mechanical properties at increasing temperatures. However, the values attained in this study were ineligible for classification according to ASTM C27-98 due to the values being lower than the stipulated requirement. Nevertheless, the researchers believe that through a refinement of the manufacturing processes and an addition of additives, Binaliw clay could be a feasible raw material for the production of fireclay bricks.

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“…This has led to more efforts being directed toward the development of new economical alternative materials. A variety of materials with potential use as grog have been investigated, for example, fired brick waste [ 1 ], fired kaolin clay [ 2 ], mullite [ 4 , 5 ], cordierite-mullite [ 6 ], bauxite [ 7 ] and blast furnace slag [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Utilization of Coal Fly Ash Derived Grog in Clay Ceramics

et al. 2020

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Grog is an additive material that plays important roles in ceramic making. It improves the fabrication process of green bodies as well as the physical properties of fired bodies. Few low-cost materials and wastes have found their application as grog in recent years, thus encouraging the replacement of commercial grogs with cost-saving materials. Coal fly ash, a combustion waste produced by coal-fired power plant, has the potential to be converted into grog owing to its small particle sizes and high content of silica and alumina. In this study, grog was derived from coal fly ash and mixed with kaolin clay to produce ceramics. Effects of the grog addition on the resultant ceramics were investigated. It was found that, to a certain extent, the grog addition reduced the firing shrinkage and increased the total porosity of the ceramics. The dimensional stability of the ceramics at a firing temperature of 1200 °C was also not noticeably affected by the grog. However, the grog addition in general had negative effects on the biaxial flexural strength and refractoriness of the ceramics.

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Effect of bauxite addition on densification and mullitization behaviour of West Bengal clay

Cited by 15 publications

References 12 publications

Reusing coffee waste in manufacture of ceramics for construction

Reusing coffee waste in manufacture of ceramics for construction

Mechanical Properties of Fireclay Bricks from Binaliw Clay

A Study on the Utilization of Coal Fly Ash Derived Grog in Clay Ceramics

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