Utilização de resíduo celulósico na composição de briquetes de finos de carvão vegetal

Abstract

The present work had as objective to evaluate the quality of the briquettes made of fines charcoal , considered residue of the transport process and packing process of the charcoal. The fines were collected in the city of Volta Redonda, Rio de Janeiro, at a charcoal briquette industry. As additional component of the briquette production process was also evaluated the use of another residual material, the "cellulose residue", generated in the precipitation of the effluent treatment of the paper production. The research was divided in two stages or phases, and the following parameters were used for the briquette production; Phase I: 3 mm size for the fine of charcoal, five different proportions of cellulose residue: 25%, 30%, 35%, 40% and 45%; in the Phase II a fixed percentage of 10% of corn starch was increased (traditional binder of charcoal briquette industry) and percentages of 5%, 10%, 15%, 20% and 25% of cellulose residue. In the briquette production was applied of 13 ton/cm2 pressure, which was accomplished in a manual press, where was used a mold manufactured in a stainless steel to give a format to each briquette. The evaluation of the quality of the briquettes was made by physical, mechanics and chemical tests: moisture, apparent density; rotation test and particle size distribution; resistance to the compression; chemical analysis, and calorific value. So, we observed that the combined use of cornstarch as a binder and cellulosic waste can be performed, producing in certain compositions, briquettes resistant and good quality briquettes analyzed and proved an interesting alternative in the joint use of two types of waste, contributing to improved environmental management processes referred to as generators of these materials (pulp and paper industry and consumer segments charcoal).