The influence of raw materials composition on the properties of fired clay products

Kruglitsky, N.N.; Datsenko, B. M.; Moroz, B. I.

doi:10.1016/0272-8842(84)90030-0

Cited by 10 publications

(5 citation statements)

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“…Reactions in the plastic minerals include loss of constituent water and phase transformations. With non-plastic minerals, decomposition of hydroxides, oxidation of organic matter, allotropic transformation, carbonate decomposition, phase transformation, reduction of compounds and liquid phase formation can occur [2][3][4][5][6][7][8][9][10]. Based on the above, the firing of clays can be quite a complex stage involving several transformations.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evaluation of Clayey Ceramic Incorporated with Powder Waste from the Sintering Plant of a Steel-Making Industry

Vieira

Ribeiro

Monteiro

2012

MSF

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Steel making in integrated plants involves several stages from the feeds tock preparation, by sintering or pelleting of the iron ore, to the rolling of the steel sheets. In any of these stages wastes are generated and unless recycled or used as by product, they will cause serious environmental problems. Therefore, this work has as its objective to evaluate the effect of incorporation of 20 wt.% of the powder waste, particulate material, retained in the eletrostatic precipitator equipment of the sintering stage from an integrated steel making plant on the microstructure a clayey ceramic fired at 1050°C. The microstructure of the fired ceramics was evaluated by scanning electron microscopy, X-ray diffraction and mercury porosimetry. The results showed that in the investigated temperature the waste increased the porosity of the clayey ceramic as well as introduced defects in the microstructure of the ceramic.

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Section: Introductionmentioning

confidence: 99%

Microstructural Evaluation of Clayey Ceramic Incorporated with Powder Waste from the Sintering Plant of a Steel-Making Industry

Vieira

Ribeiro

Monteiro

2012

MSF

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“…These are largely dependent on the ceramic microstructural characteristics such as porosity, defects and second phases [1][2][3] that may be developed during processing and finally consolidated in the firing stage. In this final sintering stage, physical and chemical reactions occurred among the different constituents of the ceramic [4][5][6][7][8][9][10]. In fact, ceramic tile bodies are normally composed of two groups of materials: plastic and non-plastic.…”

Section: Introductionmentioning

confidence: 99%

Firing Behaviour of a Clayey Ceramic Body for Rustic Floor Tiles

Vieira

Monteiro

2012

MSF

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This work had as its objective to evaluate the firing behavior and microstructure of a typical clayey ceramic body from Campos dos Goytacazes, Brazil, used to fabricate extruded rustic floor tiles. The firing behavior of samples fired at 650, 850 and 1050°C was studied by thermal analysis (DTA/TG) and their microstructural characteristics were evaluated by mercury porosimetry and X-ray diffraction. Technological properties such as water absorption, linear shrinkage and flexural strength were also evaluated. The results showed that the clayey body presents a relatively high weight loss during firing due to a significant amount of clay mineral associated with aluminum hydroxide decomposition. After firing the clayey body developed an elevated amount of porosity and low mechanical strength. Quartz was detected as the only crystalline phase originated from the unfired body. By contrast, mullite, plagioclase feldspar and hematite appeared during the firing.

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“…The final microstructure of a ceramic body is developed during shaping process and densification stage. The densification this class of products proceeds throughout a viscous phase sintering with developing of a liquid phase 8,9 . Sintering in the presence of a liquid phase is the most common method of densification in clay‐based ceramics where a melted phase is formed at the firing temperature and diffuses into open pores, developing ceramic bonds.…”

Section: Introductionmentioning

confidence: 99%

“…The densification this class of products proceeds throughout a viscous phase sintering with developing of a liquid phase. 8,9 Sintering in the presence of a liquid phase is the most common method of densification in clay-based ceramics where a melted phase is formed at the firing temperature and diffuses into open pores, developing ceramic bonds. In addition, the increase in the compaction pressure results a better contact between particles and grains, improving microstructure of ceramic body after verification.…”

Section: Introductionmentioning

confidence: 99%

Porosity–Strength Correlations in Ceramic Raschig Ring: Effects of Sintering Temperature and Water Content

Salehi

Salem

2010

Int J Applied Ceramic Tech

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The relationship between compressive strength and porosity of extruded ceramic Raschig ring has been investigated. First, the experiments have been carried out at different soaking temperatures to obtain optimum condition, reaching minimum total porosity and maximum strength. Second, in order to compare the effect of powder moisture on strength, the specimens were extruded with different water content. The dried specimens were sintered at optimum temperature according to first step result. In conclusion the maximum strength was achieved when the ceramic packings were shaped by 20–25 wt% water content and sintered at 1200°C.

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The influence of raw materials composition on the properties of fired clay products

Cited by 10 publications

References 0 publications

Microstructural Evaluation of Clayey Ceramic Incorporated with Powder Waste from the Sintering Plant of a Steel-Making Industry

Microstructural Evaluation of Clayey Ceramic Incorporated with Powder Waste from the Sintering Plant of a Steel-Making Industry

Firing Behaviour of a Clayey Ceramic Body for Rustic Floor Tiles

Porosity–Strength Correlations in Ceramic Raschig Ring: Effects of Sintering Temperature and Water Content

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