STABILIZATION OF EAF SLAG FOR USE AS CONSTRUCTION MATERIAL

摘要

MiMeR, the Minerals and Metals Recycling Research Centre at Lule? University ofTechnology, Sweden, started industry-related research work to stabilize an EAF slag fromH?gan?s AB with of CaO/SiO_2 values near to 3.2. The intention was to determine the suitabilityof the EAF slag as construction material after stabilization. Some of the stabilizers effective forpreventing disintegration of AOD slag were examined in laboratory tests for stabilization of theEAF slag. The EAF slag samples were mixed together with stabilizers for melting at 1600°Cand then cooling in a crucible system. With a laboratory granulation system, the liquid EAFslag was cooled rapidly using air. Samples from the tests were characterized by differenttechniques, including XRD and SEM. Some of the results from the work may be useful forpreventing slag disintegration and, thus, enhancing utilization of the EAF slag as constructionmaterial, thereby saving valuable natural resources.