Uso de diopsídio em massas cerâmicas para grés sanitários

Silva, R. H. L.; Neves, G. A.; Ferreira, H. C.; Santana, Lisiane Navarro de Lima; Nóbrega, Ana Cecília Vieira da; Menezes, Romualdo Rodrigues

doi:10.1590/0366-69132019653732443

Cited by 11 publications

(12 citation statements)

References 16 publications

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“…Table 1 presents the chemical composition of the clay sample, which is composed basically of SiO 2 , Al 2 O 3 , and Fe 2 O 3 , with a significant predominance of SiO 2 that is associated with quartz and kaolinite in combination with Al 2 O 3 . These results are similar to those found in the literature [12][13][14][15]. The sample also presented 9.25% of Fe 2 O 3 , which is responsible for the red color of the ceramic piece, and 1.75% of K 2 O, which is a melting component, essential for the manufacture of ceramics of low porosity, helping in the sintering of ceramics [16,17].…”

Section: Methodssupporting

confidence: 90%

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

2020

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The clay ceramics industry comprises materials used in construction (bricks, tiles, and expanded clay, among others), is of great importance for Brazilian economic development, and the industry is seeking new sources of raw material, mainly clay. The present work aims to characterize a clay deposit located in the central region of the state of Piauí, to make feasible its use as ceramic raw material, seeking to boost the clay ceramics industry. The chemical composition, the crystalline phases, and the plasticity of the clay were analyzed. Specimens were prepared by uniaxial pressing, dried in an oven at 110 °C, and then heated to 900 °C, 1000 °C, and 1100 °C. Bending strength, apparent porosity, linear shrinkage, water absorption, and mineralogical, macrostructural, and microstructural analyses were determined. The results showed an improvement in the indices with the increase in the firing temperature and that the samples showed a reddish coloration due to the presence of iron, as well as quartz and kaolinite. Thus, the clay deposit has the potential to become raw material for the clay ceramics industry in the state of Piauí.

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Section: Methodssupporting

confidence: 90%

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

2020

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“…However, the difference in the granulometric distribution of the PPR can compromise the packing of the system. In this case, even with a high content of fine particles, there may be a decrease in the densification of the system and/or an increase in the linear firing shrinkage due to the use of porcelain tile polishing residue 44 . Figure 2 depicts the thermogravimetric and thermodifferential curves (TG and DTA) of the raw materials (Figure 2a) and PPR (Figure 2b).…”

Section: Resultsmentioning

confidence: 99%

Soil Corrosivity Under Natural Attenuation

Silva,

Oliveira,

Silva

et al. 2024

Mat. Res.

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Currently, there is a severe shortage of good-quality feldspar deposits. On the other hand, porcelain tile polishing residue has been widely recognized as an alternative raw material for the ceramic industry. Thus, this research evaluated the effect of the partial replacement of feldspar by the porcelain polishing residue (PPR) in formulations for sanitary stoneware. It was replaced from 2% to 20% of the total mass of feldspar by the residue. The raw materials were characterized by X-ray fluorescence, X-ray diffraction, and particle size determination. Then, they were mixed in a wet ball mill, and the rheological properties of the suspensions were analyzed. Samples of the test were produced by slip casting and sintered at 1160 °C, 1180 °C, and 1200 °C. Rheological characteristics were not affected when up to 20% of feldspar was replaced by residue. Bodies with high amounts of PPR had flexural strength and water absorption values similar to those of bodies without PPR in formulations. Furthermore, apparent porosity values lower than the reference mass were obtained with the addition of 6% of the residue in the formulation.

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“…A importância da mulita em cerâmicas tradicionais e avançadas deve-se às propriedades do material: baixa densidade, alta estabilidade térmica, estabilidade em ambientes químicos severos, baixa condutividade térmica, boa resistência mecânica e à fluência. A característica primordial da mulita é sua baixa expansão térmica, que explica a sua estabilidade dimensional em altas temperaturas e a excelente resistência ao choque térmico (SANTOS et al, 2016;SILVA et al, 2019).…”

Section: Resultsunclassified

Incorporação de resíduo de gesso em formulação para adoquim cerâmico

Almeida¹,

Soares²,

Matos³

et al. 2020

Cerâm. ind.

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O presente estudo teve por objetivo analisar a incorporação de resíduo de gesso em formulações para adoquim cerâmico. Inicialmente as matérias-primas foram submetidas a ensaios físicos, químicos e mineralógicos para caracterização. Em seguida, foram confeccionados corpos de prova por prensagem uniaxial de 30 MPa com adição de percentuais de 5% e 10% de resíduo. Posteriormente, foi realizada a secagem em estufa e a queima em forno a 900 °C, 1000 °C e 1100 °C. Determinou-se, então, a resistência à compressão, porosidade aparente, retração linear de queima, absorção de água, condutividade térmica, índice e resistência à abrasão, além de análise mineralógica, macroestrutural e microestrutural. Os resultados das análises indicaram que o resíduo de gesso, com porcentagens de 5%, possuem características adequadas à adição em cerâmica vermelha para a produção de adoquim e aplicação em áreas externas, como praças e locais com tráfego leve, além da possibilidade de utilização como revestimento cerâmico.

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Uso de diopsídio em massas cerâmicas para grés sanitários

Cited by 11 publications

References 16 publications

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

Soil Corrosivity Under Natural Attenuation

Incorporação de resíduo de gesso em formulação para adoquim cerâmico

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