Characterization and use of clays from the Rio Bonito Formation/Paraná Basin for ceramic industry application

Comin, André Biava; Zaccaron, Alexandre; Nandi, Vítor de Souza; Inocente, Jordana Mariot; Muller, Thuani Gesser; Peterson, Michael

doi:10.1111/ijac.13749

Cited by 12 publications

(4 citation statements)

References 47 publications

(29 reference statements)

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“…Thermogravimetric analysis is useful for observing mineral reactions at higher temperatures (Comin et al , 2021). Figure 2 shows mass losses corresponding to free and adsorbed water, hydroxides, kaolinite hydroxyls, CO 2 from carbonates and mullite nucleation (Mendonça et al , 2012).…”

Section: Resultsmentioning

confidence: 99%

Measurement of apparent sintering activation energy for densification of clays

et al. 2021

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Clays are raw materials with properties that are necessary for the manufacture of ceramic tiles. The characteristics of clay ceramic raw materials may vary within the same mineral deposit. Clay blending promotes better use of clay reserves, thereby increasing the applicability and life cycle of raw materials. Therefore, it is important to understand the mechanisms controlling the firing of ceramic tiles. In this study, three different clays from a clay deposit were assessed and ten formulations were prepared using the mixture design method. The formulations were analysed using differential thermal and thermogravimetric analyses and dilatometric analysis. Subsequently, the most refractory and fluxing formulations were subjected to thermal tests under various heating rates, similar to the process used for the calculation of apparent sintering activation energy for the densification of clays and for pyroplasticity tests. It is suggested that a mineral deposit can be assessed based on activation energy and thermal kinetics, expanding the alternatives available to the miner through the planning of mixtures with various clays and thus reducing the energy costs of the industrial process.

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Section: Resultsmentioning

confidence: 99%

Measurement of apparent sintering activation energy for densification of clays

et al. 2021

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“…A caracterização química dos resíduos (Tabela 3), se observa um maior percentual de sílica (SiO 2 ), sendo 63,06% (CP) e 61, 54% (TFP). O teor de sílica (SiO 2 ) depende da presença de silicatos e sílica livre nesses subprodutos; um alto teor de sílica é típico para matérias-primas siliciosas [30,31].…”

Section: Discussionunclassified

“…A alumina (Al 2 O 3 ) se fez presente em teores aproximados nos dois resíduos (~25%). Esse oxido está associado a refratariedade em materiais cerâmicos [31]. Os óxidos cromóforos (Fe 2 O 3 e TiO 2 ), são denominados como óxidos colorantes, e são responsáveis pela cor na produto cerâmico [32].…”

Section: Discussionunclassified

Análise da viabilidade técnica e ambiental da adição de resíduos provenientes de termoelétrica e beneficiamento de carvão em massa de cerâmica vermelha

Casagrande,

Zaccaron,

Gesuino

et al. 2023

Matéria (Rio J.)

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RESUMO A investigação teve por objetivo analisar a viabilidade técnica de incorporação do resíduo proveniente do filtro prensa do processo de beneficiamento do carvão mineral (TFP) e de cinzas pesadas (CP) advindos de uma termoelétrica, em massa cerâmica na escala laboratorial. Foram realizados ensaios de caracterização físico-química e de classificação dos resíduos. Posteriormente foram desenvolvidas dez formulações através de planejamento experimental por delineamento de misturas simplex centroide, incorporando esses resíduos a uma massa padrão de cerâmica vermelha. Os corpos-de-prova foram conformados por extrusão sem vácuo e submetidos a tratamento térmico em estufa e queima em forno mufla a 900 °C. As propriedades tecnológicas avaliadas foram: retração térmica linear de secagem e de queima, absorção de água e resistência mecânica à compressão e por fim, foram realizados testes de eflorescência e análise fitotoxicológica. Os resultados de classificação dos resíduos, indicaram esses como não sendo perigoso – Classe II-B – inerte. Os testes físicos dos corpos-de-prova mostram que comparados a formulação base de cerâmica vermelha (STD), as demais formulações obtiveram resultados dentro dos parâmetros técnicos, que podem ser posteriormente realizados em um ensaio de escala industrial. Embora os ensaios mecânicos das provas com incorporação de resíduo ficaram abaixo da formulação base (STD), não se descarta uma prova em escala similar a industrial. No ensaio de eflorescência, observou-se que não houve presença de sais solúveis. E por fim, no ensaio fitotoxicológico, com Allium cepa L. de uma formulação com agregação de todas matérias-primas juntas, apresentou um resultado próximos ao padrão, se mostrando apto a reprodução em escala industrial.

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“…This corresponded to a mass loss of 5.94%, 1.6% and 3.12% for A1, A2 and A3, respectively (TGA curves). At 550 • C, a small endothermic peak without an associated mass loss was observed in A2, possibly related to the allotropic transformation of quartz (α-quartz to β-quartz) [46,47]. In clay ceramic manufacturing, this inversion can lead to cracks if cooling occurs abruptly [30].…”

Section: Raw Materials Characterizationmentioning

confidence: 99%

Sustainable Mining: Reuse of Clay from Abandoned Areas in the South of Brazil for Ceramic Production Based on a Simplex Design

Saviatto,

Zaccaron,

Nandi

et al. 2023

Materials

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The environmental impact of clay mining can be minimized using extractive mineral circularity practices. Combining the available knowledge of the characteristics of different clays with statistical tools was a decisive step for the improved use of mining resources. Through blends, all the mined materials can be incorporated to produce quality ceramic products. This study identified two types of clay from abandoned mining areas in the southern state of Santa Catarina, Brazil. These raw materials were valued together with plastic clay, which is widely used in the region, to develop 10 different formulations using a mixture design method. The clays were characterized using average granulometric distribution, mineralogical composition, and chemical, thermal and plasticity analyses. The specimens were shaped by extrusion, dried in an oven, fired in a muffle furnace and characterized based on their shrinkage, water absorption and compressive strength values. Two clays with varying characteristics—one with low workability and the other with a high silica content—exhibited difficulties (generating defects) in the extrusion shaping process, which compromised the final quality of the ceramic paste. Results showed that incorporating up to 45% by mass of the low-workability clay resulted in an increase in water absorption. The more siliceous clay improved dimensional control; however, its use at high contents (~80%) decreased the mechanical resistance. Nevertheless, when used in controlled amounts, these clays can be beneficial to the production of blocks and bricks because they have the potential to improve some properties of the finished ceramic products.

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Characterization and use of clays from the Rio Bonito Formation/Paraná Basin for ceramic industry application

Cited by 12 publications

References 47 publications

Measurement of apparent sintering activation energy for densification of clays

Measurement of apparent sintering activation energy for densification of clays

Análise da viabilidade técnica e ambiental da adição de resíduos provenientes de termoelétrica e beneficiamento de carvão em massa de cerâmica vermelha

Sustainable Mining: Reuse of Clay from Abandoned Areas in the South of Brazil for Ceramic Production Based on a Simplex Design

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