Selective reduction process and magnetic separation of nickel lateritic ore were conducted through the two-stage thermal mechanism with the addition of sodium sulfate and sodium chloride as the additives agent. The first thermal process was pre-heating at the temperature of 500C and holding for 90 minutes. Afterward, the reduction continued at the temperature of 1150C for the same holding time. The mineralogical composition of the reduced samples was determined by XRD. The microstructure of reduced nickel laterite ore was also examined using SEM-EDS. The optimum composition of the additive was the combination of 10% Na2SO4 + 10% NaCl, which produced a concentrate with 5.52% and 85.89% for nickel grade and nickel recovery, respectively.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - 8 Jul 2019|
|Event||8th Annual International Conference 2018 on Science and Engineering, AIC-SE 2018 - Banda Aceh, Aceh Province, Indonesia|
Duration: 12 Sep 2018 → 14 Sep 2018