Papers

Summary

The environmental licensing agencies have been especially concerned with the negative impacts of the application of industrial residues in the environment. In this context, research was carried on to study the viability of the following metallurgy products for agricultural purposes: scum of the Cubilot oven (SCO), cyclone residues of the sand system (CSS) and of the un-molder cyclone. This study was motivated by the concern with the possibility of contamination of the environment and also because of the great amount of area needed for the fi nal discharging of these residues. The contents of possibly toxic elements are below the limits allowed by the CETESB [Company of Environmental Sanitation Technology - Brazil], thus making possible the agricultural use of these residues. Among the studied materials, only the SCO performed well as a soil acidity corrective. The three analyzed materials presented potentials to act as sources of micronutrients for the plants.