Three types of samples were scanned to observe their microstructure, not only surface structure but internal one as well. The samples were industrial copper matte, industrial fayalite slag, and laboratory-treated (doped) copper matte. The XCT results managed to show all the sought differences, e.g. glassy structure, microcracks and distribution of inclusions. Samples are described in Sibarani, D., Hamuyuni, J., Luomala, M., Lindgren, M., Jokilaakso, A., 2020. Thermal Conductivity of Solidified Industrial Copper Matte and Fayalite Slag. Heat Transfer Utilization in Pyrometallurgy. Preview of PAS-dataset https://doi.org/10.23729/73f17c08-6040-4c2e-94a9-793efa9faf94

2020