TY - JOUR
T1 - Enrichment on Bangka tin slag's tantalum and niobium oxide contents through non-fluoride process
AU - Permana, Sulaksana
AU - Vincia, Shiva Frida
AU - Amilia, Anggita
AU - Maksum, Ahmad
AU - Widana, Kurnia Setiawan
AU - Soedarsono, Johny Wahyuadi
N1 - Publisher Copyright:
© Sulaksana Permana, Shiva Frida Vincia, Anggita Amilia, Ahmad Maksum, Kurnia Setiawan Widana, Johny Wahyuadi Soedarsono, 2018.
PY - 2018/1/1
Y1 - 2018/1/1
N2 -
This research explored how non-fluoride solutions including 8M NaOH, 0.8, 1.6 and 2.4 M H
2
SO
4
, and 0.1, 0.4 and 0.8 M HClO4 increased the contents of tantalum and niobium oxide through leaching. Before leaching, Bangka tin slag (BTS) was characterized through XRF. The slag was then 900°C-roasted, quenched, and dewatered. Next, BTS underwent a sieving process with size classifications of +100, -100+150, -150+200, -200+250, and -250 mesh. After that, the -200+250 mesh slag was leached with 8M NaOH. Then, the leached product was divided into two, one of which was 0.1, 0.4, and 0.8 M HClO4-leached and the rest of which was leached with 0.8 M HClO
4
followed by 0, 0.8, 1.6, and 2.4 M H
2
SO
4
at 25°C within 2 hours. All the residues characterization used an XRF while that of filtrates used an AAS as well as an ICP-OES. The motives that drive this investigation are the deficit of tantalum supply and its status as one of the technology-critical elements. In addition to that, most of prior investigations enhanced the contents of tantalum and niobium oxide using fluoride acid while this study ventured non-fluoride solutions. The result shows that perchlorate acid followed by sulfuric acid leaching slightly enriches the tantalum and niobium contents. However, this method is the most effective among NaOH, HCIO
4
, and HCIO
4
followed by H
2
SO
4
leaching. This finding is a form of scientific effort to maintain the tantalum supply through utilizing worthless waste of tin smelting.
AB -
This research explored how non-fluoride solutions including 8M NaOH, 0.8, 1.6 and 2.4 M H
2
SO
4
, and 0.1, 0.4 and 0.8 M HClO4 increased the contents of tantalum and niobium oxide through leaching. Before leaching, Bangka tin slag (BTS) was characterized through XRF. The slag was then 900°C-roasted, quenched, and dewatered. Next, BTS underwent a sieving process with size classifications of +100, -100+150, -150+200, -200+250, and -250 mesh. After that, the -200+250 mesh slag was leached with 8M NaOH. Then, the leached product was divided into two, one of which was 0.1, 0.4, and 0.8 M HClO4-leached and the rest of which was leached with 0.8 M HClO
4
followed by 0, 0.8, 1.6, and 2.4 M H
2
SO
4
at 25°C within 2 hours. All the residues characterization used an XRF while that of filtrates used an AAS as well as an ICP-OES. The motives that drive this investigation are the deficit of tantalum supply and its status as one of the technology-critical elements. In addition to that, most of prior investigations enhanced the contents of tantalum and niobium oxide using fluoride acid while this study ventured non-fluoride solutions. The result shows that perchlorate acid followed by sulfuric acid leaching slightly enriches the tantalum and niobium contents. However, this method is the most effective among NaOH, HCIO
4
, and HCIO
4
followed by H
2
SO
4
leaching. This finding is a form of scientific effort to maintain the tantalum supply through utilizing worthless waste of tin smelting.
KW - Bangka tin slag
KW - HClO
KW - Leaching
KW - NaOH
KW - Tantalum niobium oxide (TNO)
KW - вилуговування
KW - Оксид нiобiю танталу (ОНТ)
KW - Олов'яний шлак Бангка
UR - http://www.scopus.com/inward/record.url?scp=85062877845&partnerID=8YFLogxK
U2 - 10.15587/1729-4061.2018.129914
DO - 10.15587/1729-4061.2018.129914
M3 - Article
AN - SCOPUS:85062877845
SN - 1729-3774
VL - 5
SP - 56
EP - 64
JO - Eastern-European Journal of Enterprise Technologies
JF - Eastern-European Journal of Enterprise Technologies
IS - 12-95
ER -