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Kaloumenou, Maria; Badogiannis, Efstratios; Tsivilis, S.; Kakali, G.

doi:10.1023/a:1010143214686

Cited by 24 publications

(3 citation statements)

References 14 publications

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“…When kaolinite is calcined [4,5], it is transformed into metakaolinite, a material which also has industrial applications. Metakaolinite features a highly disordered structure with remnants of the Si-O networks, those appear as an outcome of dehydroxylation of Al-O-OH networks followed by reorganization [6,7]. Also important is the change of hexa-coordinated Al to tetra-coordinated Al [8].…”

Section: Introductionmentioning

confidence: 99%

Comparative studies on physico-mechanical properties of composite materials of low density polyethylene and raw/calcined kaolin

Mallik

Barik

Pal

2015

Journal of Asian Ceramic Societies

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Raw and calcined kaolin filler Composite materials Physico-mechanical properties a b s t r a c tThe paper describes the preparation of the composite materials of low density polyethylene (LDPE) as the base mixed separately with raw kaolin and the same calcined at 800 • C under the same variation in weight percentage using single-screw extruder and a mixing machine operated at a temperature between 190 and 200 • C. Some of the mechanical and physical properties such as Young's modulus, elongation at break, shore hardness and water absorption were determined at different weight fractions of filler (0, 2, 7, 10 and 15%). It was found that the addition of filler increases the mechanical properties. Absorption test was done in water at different immersion times for different composites. The degree of water absorption of composite materials was found to decrease with increasing wt% of kaolin filler (0-15%) according to Fick's law. Calcined kaolin produces better mechanical properties than raw kaolin.

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Section: Introductionmentioning

confidence: 99%

Comparative studies on physico-mechanical properties of composite materials of low density polyethylene and raw/calcined kaolin

Mallik

Barik

Pal

2015

Journal of Asian Ceramic Societies

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“…Figures 3 and 4 show the effects of variation in chamotte content on the bulk density of the samples and the effects of variation in chamotte content on the specific gravity of the samples respectively. There is a loss of weight of about 14% at above 450˚C when the raw kaolin transforms to meta-kaolin, and the growth of the grains at about 1200˚C while forming splice [23][24][25][26]. Explain why the bulk density and specific gravity of the samples decrease with increasing chamotte content as shown in Figures 3 and 4, except for the sharp deviation from samples C and D (60% and 40% chamotte respectively).…”

Section: Resultsmentioning

confidence: 99%

Production of Refractory Lining for Diesel Fired Rotary Furnace, from Locally Sourced Kaolin and Potter’s Clay

Aramide¹,

Seidu²

2013

JMMCE

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This research was conducted to formulate a refractory lining recipe for lining diesel fired rotary furnace from locally sourced kaolin, using locally sourced potter's clay as binder. Six samples (A-F) of kaolin clay mined locally from Apata II area, Ondo road, in Ile-Ife, Nigeria, were roasted at 1200˚C held for 8 hours, mixed with different percentages of raw kaolin and appropriately made into briquettes using potter's clay of good plasticity as binder. The samples were tested for various refractory properties. The result showed that sample mixes A (100% chamotte), B (80% chamotte, 20% raw kaolin) and C (60% chamotte, 40% raw kaolin) are considered to have good properties. However, the optimum materialmix for the refractory bricks lining, with particular reference to the highest thermal shock resistance was found to be 80% chamotte mixed with 20% raw kaolin.

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“…Prema literaturi, proučavanje MK se odvija u dva osnovna pravca. Prvi se odnosi na karakterizaciju strukture kaolinita i primenu različitih analitičkih metoda za praćenje konverzije kaolinita u metakaolinit tokom termičke obrade [2][3][4][5][6][7][8][9][10]. Drugi se odnosi na pucolanska svojstva MK i njegov uticaj na karakteristike cementa i betona [11][12][13][14][15][16][17][18][19][20][21][22].…”

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Research of possibilities for use domestic kaolin clays for production of metakaolin

Mitrović

Komljenović

Ilic

2009

Hem Ind

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Environmental concerns coming from the high energy consumption and CO2 emission associated with cement production have brought about pressures to reduce cement consumption through the use of new materials which can be applied for substitution of a part of clinker in Portland cement or a part of cement in concrete. One of the materials that satisfy requirements of sustainable development and, when added in appropriate shares, improves the properties of cement, mortars and concrete, is metakaolin (MK), a processed pozzolana. The main and widely used raw material for production of metakaolin is kaolin clay. MK is produced by calcination or 'thermal activation' of kaolin clay. The possibilities for metakaolin production are strongly related to the characteristics of the used kaolin clay. The samples of domestic kaolin clay used in this study were provided by factories Kaolin, Valjevo, and Keramika, Mladenovac. Chemical composition, mineralogical composition and thermal properties of these samples were determined. Thermal analysis (simultaneous recording of TG, DTG and DTA signals) was carried out at the temperature range from 20 to 1200 °C. For both clays the results show that the loss of mass occurred in two stages. The dehydroxillation of kaolinite and formation of metakaolin occurred in the second stage. Minerals quartz and kaolinite are dominant in the clay Kaolin, Valjevo. Dehydroxillation of kaolinite and formation of metakaolin took place in the temperature range 350-800 °C. This clay does not have clearly distinct exothermic and endothermic peaks. Clay from Keramika, Mladenovac, has a higher content of the kaolinite mineral, i.e. 81.51%. The dehydroxillation of kaolinite and formation of metakaolin occurred in the temperature range 400-700 °C. This clay has two distinct endothermic peaks at 60 and 490 °C. All these results show that both clays can be used for production of metakaolin

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Cited by 24 publications

References 14 publications

Comparative studies on physico-mechanical properties of composite materials of low density polyethylene and raw/calcined kaolin

Comparative studies on physico-mechanical properties of composite materials of low density polyethylene and raw/calcined kaolin

Production of Refractory Lining for Diesel Fired Rotary Furnace, from Locally Sourced Kaolin and Potter’s Clay

Research of possibilities for use domestic kaolin clays for production of metakaolin

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