Firing Parameters Effect on the Physical and Mechanical Properties of Scheelite Tailings-Containing Ceramic Masses

Marcos Emmanuel Araújo Carreiro, Valmir José da Silva, Alisson Mendes Rodrigues, Ester Pires de Almeida Barbosa, Fabiana Pereira da Costa, Romualdo Rodrigues Menezes, Gelmires Araújo Neves and Lisiane Navarro de Lima Santana
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Marcos Emmanuel Araújo Carreiro: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Valmir José da Silva: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Alisson Mendes Rodrigues: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Ester Pires de Almeida Barbosa: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Fabiana Pereira da Costa: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Romualdo Rodrigues Menezes: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Gelmires Araújo Neves: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil
Lisiane Navarro de Lima Santana: Graduate Program in Materials Science and Engineering (PPG-CEMat), Federal University of Campina Grande, Campina Grande 58429-900, Brazil

Sustainability, 2021, vol. 14, issue 1, 1-15

Abstract: The firing parameters in ceramic masses incorporated with 0, 5, and 10 wt% of scheelite tailings were investigated. The ceramic masses were characterized by X-ray fluorescence, granulometric, mineralogical analysis, and Atterberg limits determination. The samples were obtained by uniaxial pressing (20 MPa), sintered at different temperatures (800, 900, and 1000 °C), and heating rates (5, 10, 15, and 20 °C∙min −1 ). Physical and mechanical tests (water absorption, apparent porosity, and flexural strength) and mineralogical tests were accomplished from the sintered samples. Natural aging tests were also carried out to assess carbonation resistance. For this, some samples were kept in an internal environment (inside the laboratory) for 3 months. The results showed a high content of calcium oxide in the scheelite tailings and a reduction in the plasticity index of the ceramic masses with the tailings addition. The best results were observed for the ceramic mass with 5% tailings. The best results were observed regarding the firing parameters for the temperature equal to 1000 °C, increasing the heating rate to 10 °C∙min −1 without compromising the material properties. The samples kept in an internal environment for 3 months showed a loss of physical and mechanical properties. Such behavior probably occurred due to the onset of the carbonation phenomenon.

Keywords: scheelite tailings; sustainable ceramic mass; red ceramic; firing parameters (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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