TY - GEN
T1 - Reduction process of low-grade chromite sand using calcium carbonate and calcium sulfate as additives and coal as reductant
AU - Nurjaman, F.
AU - Shofi, A.
AU - Herlina, U.
AU - Suharno, B.
AU - Faradila, A. R.
AU - Laurensia,
AU - Subandrio, S.
N1 - Publisher Copyright:
© 2020 Author(s).
PY - 2020/4/21
Y1 - 2020/4/21
N2 - The magnetic separation and reduction are conducted as a beneficiation process to increase Cr/Fe ratio of low- grade chromite sand. Magnetic separation was performed both before and after the reduction process, which was conducted for 60 minutes at 1000 °C with various reductant amount, i.e. 5 wt.% of lean carbon; stoichiometry; 5 wt.% and 10 wt.% of excess carbon. The 20 wt.% additives of calcium carbonate and calcium sulfate were used in this reduction process. The chromium content and Cr/Fe ratio in chromite sand were 19.27 % and 0.9, respectively. Pretreatment of magnetic separation increased its chromium content and Cr/Fe ratio up to 21.33 % and 1.31, respectively. The optimum result from reduction process followed by magnetic separation was obtained by using stoichiometry reductant with 20 wt.% of calcium carbonates, which resulted in an increased Cr/Fe ratio up to 1.53.
AB - The magnetic separation and reduction are conducted as a beneficiation process to increase Cr/Fe ratio of low- grade chromite sand. Magnetic separation was performed both before and after the reduction process, which was conducted for 60 minutes at 1000 °C with various reductant amount, i.e. 5 wt.% of lean carbon; stoichiometry; 5 wt.% and 10 wt.% of excess carbon. The 20 wt.% additives of calcium carbonate and calcium sulfate were used in this reduction process. The chromium content and Cr/Fe ratio in chromite sand were 19.27 % and 0.9, respectively. Pretreatment of magnetic separation increased its chromium content and Cr/Fe ratio up to 21.33 % and 1.31, respectively. The optimum result from reduction process followed by magnetic separation was obtained by using stoichiometry reductant with 20 wt.% of calcium carbonates, which resulted in an increased Cr/Fe ratio up to 1.53.
UR - http://www.scopus.com/inward/record.url?scp=85113519206&partnerID=8YFLogxK
U2 - 10.1063/5.0001853
DO - 10.1063/5.0001853
M3 - Conference contribution
AN - SCOPUS:85113519206
T3 - AIP Conference Proceedings
BT - Proceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
A2 - Darsono, Nono
A2 - Thaha, Yudi Nugraha
A2 - Ridhova, Aga
A2 - Rhamdani, Ahmad
A2 - Utomo, Muhammad Satrio
A2 - Ridlo, Faried Miftahur
A2 - Prasetyo, Mukhlis Agung
PB - American Institute of Physics Inc.
T2 - 3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
Y2 - 23 October 2019 through 24 October 2019
ER -