PROCESSO PRODUTIVO E GERAÇÃO DE RESÍDUOS DE CORTE DE MÁRMORES E GRANITOS EM MARMORARIAS DE RIO VERDE/GO

Abstract

The consumption of raw materials of mineral origin, such as crushed rocks and ornamental rocks, has grown exponentially in recent decades. In Brazil, these products generate tons of waste each year, which are often disposed of in landfills and dumps. In civil construction, ornamental stones play an important role for floor, wall coverings and in the installation of countertops for sinks, washbasins and counters that have the advantage of their manufacture in the design measures. The processing of ornamental rocks is carried out in marble and granite shops, where they are made from simple rectangular pieces, such as sills, to complex and difficult to assemble pieces, such as washbasins, counters and others. This work analyzed the origins of marble and granite cutting waste (MGCW), studying the entire production process of pieces dimensioned in marble shops in Rio Verde. Also carried out a field research that characterized the composition of the MGCW and determined the residual percentage of the generation of the coarse part of the MGCW, defining it as the residual marble flaps (RMF). In the results, the production phases of the most commercialized pieces were presented in detail, in which it was found that the more detailed the piece is, the greater its waste generation and that on the rounded counter the largest waste generation was obtained, exceeding 30%. In the generation of waste, a residual percentage of approximately 10% was obtained for the composition of the RMF of the MGCW. The quantitative data of residues generated in Rio Verde were presented in the form of tables and figures attached in this work.