|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Effect of the Incorporation of Bauxite and Iron Ore Tailings on the Properties of Clay Bricks
||Beatryz Mendes, Leonardo Gonçalves Pedroti, Bianca Rossi Bonomo, Anna Carolina Lamborghini Lucas, Lívia Souza Silva, Márcia Maria Salgado Lopes, Gustavo Emílio Souza de Lima
|On-Site Speaker (Planned)
||Gustavo Emílio Souza de Lima
Mining industries generate high amounts of tailings, which are usually allocated in dams. These structures cause severe environmental impacts and serious risks to the safety of surrounding population. Another way to dispose these wastes is the addition into building materials. This work aimed to study the incorporation of bauxite and iron ore tailings in clay bricks. The raw materials were the tailings and one clay. The mixture design of experiments was applied to obtain the mixtures and cylinder specimens were produced by pressing. After drying and firing at 950°C, the specimens were evaluated for mechanical strength, water absorption, apparent porosity and bulk density. Based on standards criteria, the optimal mixture was determined containing 40% of clay, 45% of bauxite residue and 15% of iron ore tailings. This study proved the technical feasibility of using high percentages of mining tailings for ceramic production, which is also a sustainable action.