TY - GEN
T1 - Sulfuric acid leaching of Bangka Indonesia ilmenite ore and ilmenite decomposed by NAOH
AU - Lalasari, Latifa Hanum
AU - Subagja, Rudi
AU - Yuwono, Akhmad Herman
AU - Firdiyono, F.
AU - Harjanto., Sri
AU - Suharno, Bambang
PY - 2013
Y1 - 2013
N2 - Ilmenite (FeO.TiO2) ore from Bangka island-Indonesia is a potential raw material for synthesizing titanium dioxide (TiO2), which can be used further as pigmen and photocatalyst. The fabrication of TiO2 particles from ilmenite can be carried out through the solvent extraction using sulfuric acid route. Therefore, the solubility of the ilmenite ore in sulfuric acid environment is one of the key factors to obtain the desired TiO2 particles. The current research is aimed at comparing the solubility of pristine Bangka ilmenite ore with that of precedingly decomposed by sodium hidroxide (NaOH) in pressurized and atmospheric reflux reactors. The dissolution of both precursors was carried out in those reactors under various temperatures of 75, 100, 125, 150 and 175°C. The results showed that the optimum dilution was achieved at 150°C. The obtained recovery of ilmenite was 88.8% for the pressurized reactor and 75.5% for the atmospheric reflux reactor. The solubility of titanium (Ti) element increased steadily to reach a recovery of 68% at 150°C and decreased significantly afterwards. It was also found that the increase of iron (Fe) element solubility was proportional to the increase of processing temperatures.
AB - Ilmenite (FeO.TiO2) ore from Bangka island-Indonesia is a potential raw material for synthesizing titanium dioxide (TiO2), which can be used further as pigmen and photocatalyst. The fabrication of TiO2 particles from ilmenite can be carried out through the solvent extraction using sulfuric acid route. Therefore, the solubility of the ilmenite ore in sulfuric acid environment is one of the key factors to obtain the desired TiO2 particles. The current research is aimed at comparing the solubility of pristine Bangka ilmenite ore with that of precedingly decomposed by sodium hidroxide (NaOH) in pressurized and atmospheric reflux reactors. The dissolution of both precursors was carried out in those reactors under various temperatures of 75, 100, 125, 150 and 175°C. The results showed that the optimum dilution was achieved at 150°C. The obtained recovery of ilmenite was 88.8% for the pressurized reactor and 75.5% for the atmospheric reflux reactor. The solubility of titanium (Ti) element increased steadily to reach a recovery of 68% at 150°C and decreased significantly afterwards. It was also found that the increase of iron (Fe) element solubility was proportional to the increase of processing temperatures.
KW - Ilmenite
KW - Ionic iron
KW - Ionic titanium
KW - Sodium hydroxide
KW - Sulfuric acid
UR - http://www.scopus.com/inward/record.url?scp=84886255453&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.789.522
DO - 10.4028/www.scientific.net/AMR.789.522
M3 - Conference contribution
AN - SCOPUS:84886255453
SN - 9783037857571
T3 - Advanced Materials Research
SP - 522
EP - 530
BT - Advances in Materials, Processing and Manufacturing
T2 - 13th International Conference on Quality in Research, QiR 2013
Y2 - 25 June 2013 through 28 June 2013
ER -