Effects of Na2SO4 addition on the selective reduction of limonite ore from Southeast Sulawesi

Rinanda Rahmat, Ahmad Maksum, Delfiendra, Johny Wahyuadi Soedarsono

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

In terms of its process, although only about 40% of the world's nickel reserves are classified as lateritic ore, nickel sulfide still dominates nickel laterite for its practicality. Because of the high demands on nickel, development and research on nickel mineral processing are needed to ensure that the demands are fulfilled from year to year. On this research, a study will be conducted on the effect of adding Na2SO4 to increase the level of nickel content in limonite by selective reduction process. The reduction process is done by heating limonite ore and coal as reducer from room temperature to 1000°C with temperature rising to 10°C/minute in mini furnace on varying addition of 0%, 5%, 10%, and 15% Na2SO4. After that, the reduction result is tested on XRD and AAS. It has been found that the nickel content has decreased, which is likely due to the excessive reduction time resulting in the magnetite being re-oxidized to hematite. Therefore, based on recovery calculations, the optimal addition of Na2SO4 is 5% by weight where the obtaining nickel content is 1.09%.

Original languageEnglish
Article number012068
JournalIOP Conference Series: Earth and Environmental Science
Volume105
Issue number1
DOIs
Publication statusPublished - 25 Jan 2018
Event2nd International Tropical Renewable Energy Conference, i-TREC 2017 - Bali, Indonesia
Duration: 3 Oct 20174 Oct 2017

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