Diagnóstico ambiental e de processo da lavra de rocha ornamental com vistas a aplicação de técnicas de produção mais limpa

Abstract

Solid waste management in the ornamental rock sector is of great importance given the enormous amount of waste generated in the process, which on average reaches the range of 65 to 75%. In addition to representing losses in production, tailings affect the environment and the waste of mineral resources, causing a great socio-environmental impact. Since the tailings are deposited and stored improperly, it damages the very sequence of the extraction work and also creates risks of accidents. Regarding the methodology, a case study was carried out in an ornamental rock quarry located in the Mufumbo site, in the city of Parelhas, RN. Initially a bibliographic survey was carried out in scientific articles, periodicals, annals of congresses, books, theses, dissertations, laws, standards, and manuals on the topics discussed here. It was found that the processes associated to the economic activity of the mining are responsible for the generation of solid, liquid and gaseous wastes, causing environmental compromise, which can sometimes be irreparable. In the present case, the extraction of ornamental rocks is a procedure that generates large volumes of solid waste, so that its use must be promoted through the use of materials that can be used and marketed.