Effect of sodium sulfate and sodium chloride in two-stage thermal upgrading of low-grade Nickel Lateritic Ore

B. Suharno, C. Ramadini, R. H. Shaleh, A. Shofi, F. Nurjaman

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Article number012062
JournalIOP Conference Series: Materials Science and Engineering
Volume523
Issue number1
DOIs
Publication statusPublished - 8 Jul 2019
Event8th Annual International Conference 2018 on Science and Engineering, AIC-SE 2018 - Banda Aceh, Aceh Province, Indonesia
Duration: 12 Sep 201814 Sep 2018

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