Análise do processamento de rochas ornamentais por meio da caracterização de materiais : contribuições para avaliação do consumo energético

• Ano de defesa: 2016
• Autor(a) principal: Faria, Rômulo Furtado
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Energia; UFES; Programa de Pós-Graduação em Energia
• Palavras-chave em Português: Rocks processing; Energy consumption; Mineral characterization; Processamento de rochas; Consumo energético; Caracterização de mineral; Consumo de energia; Rochas ornamentais - Consumo; Minas e recursos minerais; Rochas ornamentais; Engenharia/tecnologia/Gestão; 620.9
• Link de acesso: http://repositorio.ufes.br/handle/10/8473

The state of Espírito Santo has a rich and complex geology, which allows the state to be the main exporter of ornamental stones in Brazil. The abundance of available mineral resources enables regional growth in line with the development of extractive manufacturing. The aim of this study is to contribute to this sector adding value and consolidating the knowledge about the processing of ornamental stones. The objective is to analyze and propose solutions based on energy consumption and material characterization to improve the ornamental stone processing. The methodology used in this study consists in a descriptive research, organized as an exploratory case study. Thirty eight commercial types of ornamental stones were collected. The samples obtained were analyzed using data collected from a multiwire loom that cut the stones, considering the variables: type; time; volume and hardness, since they are important for the calculation of the energy consumption. From the data it was calculated a process factor Fp that takes into account the volume of processed material in function of time. Through the Fp it was possible to determine an equation for energy consumption predictability. The materials that presented the lowest Fp (Ice Flake Fp = 0.548 m³/h), closer to the average (Giallo Imperiale, Fp = 1,59 m³/h), and the highest (Portofino, Fp = 2,40 m³/h), were selected for better analysis. Petrographic analysis, X-ray diffraction and scanning electron microscopy were done on these selected samples. The results found allow to state that the structural properties of the component materials of the stones are important factors in the calculation of energy consumption. The research enabled technical and academic positive points and the results may be used as support to the ornamental stones processing industry.