Produção Nacional
Effect of the Incorporation of Iron Ore Tailings on the Properties of Clay Bricks
2019; Springer International Publishing; Linguagem: Inglês
10.1007/978-3-030-05749-7_61
ISSN2367-1181
AutoresBeatryz Cardoso Mendes, Leonardo Gonçalves Pedroti, Rita de Cássia S. S. Alvarenga, Maurício Paulo Ferreira Fontes, Pedro Cota Drumond, Anderson Almeida Pacheco, Márcia Maria Salgado Lopes, Afonso Rangel Garcez de Azevedo,
Tópico(s)Recycling and utilization of industrial and municipal waste in materials production
ResumoThe high production of iron ore in Brazil leads to the generation of large amount of iron ore tailingsIron ore tailings (IOTs). Usually, this wasteWaste is disposed of in dams, but this choice offers environmental and security problems. Fundão dam accident that occurred in Mariana, Brazil, is an example of the potential damage of this solution. About 30 million m3 of IOTs left the structure, causing devastation of a large area. Therefore, alternatives for removal and reuse should be investigated. This work aims to evaluate the use of IOTs as raw material in red ceramicRed ceramic Prismatic bricks were produced from a conventional clayClay and the following amounts of IOTs: 0, 5, 10, 20, 30 and 50%. Physical and mechanical characterizationMechanical characterization was performed after the firing process. The results showed that addition of wasteWaste reduced water absorption, apparent porosity and mechanical strengthStrength The incorporation of up to 20% can be accepted, maintaining product quality. The study proves the technical feasibility of using IOTs, configuring a sustainableSustainable alternative for its recycling.Recycling
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