Phosphatization sludge is a solid waste generated by the treatment of effluents from the steel recovering process via phosphatization. It is classified as Class IIA - Non Inert and it is usually disposed of in industrial landfills. A waste treatment alternative is the stabilization by solidification in ceramic and Portland cement matrices. It allows the recycling of the waste as a raw material for the construction industry, reduces the cost of treatment and final disposal, and reduces landfill areas. The aim of this study is to determine the stabilization by solidification of phosphatization sludge in red ceramic matrices, used in the production of masornry ceramic blocks, and in Portland cement concrete. The materials used were characterized and the matrices with and without sludge were evaluated by leaching and solubilization analysis. The results indicate that there is a trend of both matrices to stabilization by solidification of the parameters investigated.
Pphosphatization sludge; Stabilization by solidification; Recycling; Rred ceramic; Portland cement
