Utilização de rejeito de minério de ferro na formulação de tijolos ecológicos

Abstract

Mining companies have been exploring and developing alternatives toutilize the wastethat comes from the iron ore processing. The mining activity generates a high volume of waste that causes several environmental problems in the world, mainly in Brazil. Therefore, it gets more and more necessary to develop new techniques of use and recycling of these residues in order to minimize the impacts generated by their disposal. The aim of this work is to evaluatethe addition of iron ore waste from a mining company in the mixture of soil-cement bricks, combining low cost and sustainability. Different traces of soil, residue and Portland cementwere evaluated to product the bricks. The research methodology was qualitative and quantitative using the case study approach. For scientific investigation, a structured questionnaire survey with 85 participants was used, in addition to observation on social networks. The results revealed that there is a great interest in the ecological brick and that there are great opportunities to attract more companies interested in this sector.