TY - JOUR
T1 - Effects of Na2SO4 addition on the selective reduction of limonite ore from Southeast Sulawesi
AU - Rahmat, Rinanda
AU - Maksum, Ahmad
AU - Delfiendra,
AU - Soedarsono, Johny Wahyuadi
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2018/1/25
Y1 - 2018/1/25
N2 - 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%.
AB - 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%.
UR - http://www.scopus.com/inward/record.url?scp=85041681088&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/105/1/012068
DO - 10.1088/1755-1315/105/1/012068
M3 - Conference article
AN - SCOPUS:85041681088
SN - 1755-1307
VL - 105
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012068
T2 - 2nd International Tropical Renewable Energy Conference, i-TREC 2017
Y2 - 3 October 2017 through 4 October 2017
ER -