ECONOMIC AND ENVIRONMENTAL ALTERNATIVE FOR DESTINATION OF SPENT POT LINING FROM PRIMARY ALUMINUM PRODUCTION

摘要

The residue from the demolition of electrolytic cells for theproduction of primary aluminum is the Spent Potlining (SPL).This material is classified as Class I (non-inert - traces of cyanide)waste. Among the possibilities of neutralizing the SPL there arethe process at elevated temperatures with the formation ofsilicates and calcium compounds. The processes of secondarymetallurgy of steel are characterized by high temperature and theslag is from the CaO-Al2O3-SiO2 system saturated with CaO.Additionally, other fluidizing components used are found on thecomposition of SPL. In this work was investigated and evaluatedthe possible development and application of SPL as alternative insteelmaking.