ORAL

SESSION: Non-ferrousMonAM-R1	Barrios International Symposium on Sustainable Non-ferrous Smelting and Hydro/Electrochemical Processing (5th Intl. Symp. on Sustainable Non-ferrous Smelting and Hydro/Electrochemical Processing)
Mon Oct, 23 2017	Room: Condesa II
Session Chairs: Guillermo Rios; Thomas Gonzales; Session Monitor: TBA

16:00: [Non-ferrousMonAM08]
Novel Design of Ferronickel Smelting Slag by Utilizing Red Mud as a Fluxing Agent: Thermochemical Computations and Experimental Confirmation
Hyunsik Park¹ ; Byung-soo Kim¹ ; Jae-cheon Lee¹ ; ¹Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, Korea (Republic of [South] Korea);
Paper Id: 194 [Abstract]

The effect of red mud on the melting behavior of ferronickel slag was investigated in a laboratory-scale horizontal tube furnace. Melting and softening of slag samples fluxed with different amounts of red mud were examined by an in-situ visualization technique in the temperature ranges from 1673 K to 1823 K. FactSage¢a 7.0 was used to perform thermodynamic calculations of the multi-component system of ferronickel slag and red mud. The liquid phase area was extended to lower temperatures by adding red mud, and this implied that red mud was an excellent flux. The primary solid phase field was confirmed to be dependent on the red mud content from X-ray diffraction measurements. Microscopic observations using a scanning electron microscope (SEM-EDX) confirmed that the primary solid phase changed from olivine to spinel with the addition of red mud.