The recovery of metallic tin from an industrial tin-bearing by-product containing Na2SO4 by reduction smelting process

Jongshin Chang; Hosang Sohn

doi:10.3390/met11111697

The recovery of metallic tin from an industrial tin-bearing by-product containing Na₂SO₄ by reduction smelting process

Jongshin Chang, Hosang Sohn

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Tin was recovered in metal from an industrial tin-bearing byproduct containing Na₂SO₄ by carbothermic reduction smelting, and the effects of basicity (Na₂O/SiO₂), temperature, and reaction time on the recovery of tin were studied. Na₂SO₄ was reduced by carbon and formed into sodium silicate slag (Na₂O–SiO₂) in the presence of SiO₂. Tin content in slag decreased with the increase of Na₂O/SiO₂ ratio in slag, temperature, and reaction time, but the recovery of tin was affected by volatilization of tin in high temperature and high silica region of basicity. In this study, the maximum recovery rate of tin was 94.8% at the experimental condition of 1200^◦C, 2 h, and 0.55 of Na₂O/SiO₂ ratio. The major impurities in produced metal were Bi, Pb, Cu, Fe, and most of Bi, Pb, Cu were distributed to the metal phase, but the distribution of Fe was closely related to basicity.

Original language	English
Article number	1697
Journal	Metals
Volume	11
Issue number	11
DOIs	https://doi.org/10.3390/met11111697
State	Published - Nov 2021

Keywords

Carbothermic reduction smelting
Sodium sulfate
Tin recovery
Tin volatilization
Tin-bearing material

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10.3390/met11111697

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title = "The recovery of metallic tin from an industrial tin-bearing by-product containing Na2SO4 by reduction smelting process",

abstract = "Tin was recovered in metal from an industrial tin-bearing byproduct containing Na2SO4 by carbothermic reduction smelting, and the effects of basicity (Na2O/SiO2), temperature, and reaction time on the recovery of tin were studied. Na2SO4 was reduced by carbon and formed into sodium silicate slag (Na2O–SiO2) in the presence of SiO2. Tin content in slag decreased with the increase of Na2O/SiO2 ratio in slag, temperature, and reaction time, but the recovery of tin was affected by volatilization of tin in high temperature and high silica region of basicity. In this study, the maximum recovery rate of tin was 94.8% at the experimental condition of 1200◦C, 2 h, and 0.55 of Na2O/SiO2 ratio. The major impurities in produced metal were Bi, Pb, Cu, Fe, and most of Bi, Pb, Cu were distributed to the metal phase, but the distribution of Fe was closely related to basicity.",

keywords = "Carbothermic reduction smelting, Sodium sulfate, Tin recovery, Tin volatilization, Tin-bearing material",

author = "Jongshin Chang and Hosang Sohn",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = nov,

doi = "10.3390/met11111697",

language = "English",

volume = "11",

journal = "Metals",

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T1 - The recovery of metallic tin from an industrial tin-bearing by-product containing Na2SO4 by reduction smelting process

AU - Chang, Jongshin

AU - Sohn, Hosang

PY - 2021/11

Y1 - 2021/11

N2 - Tin was recovered in metal from an industrial tin-bearing byproduct containing Na2SO4 by carbothermic reduction smelting, and the effects of basicity (Na2O/SiO2), temperature, and reaction time on the recovery of tin were studied. Na2SO4 was reduced by carbon and formed into sodium silicate slag (Na2O–SiO2) in the presence of SiO2. Tin content in slag decreased with the increase of Na2O/SiO2 ratio in slag, temperature, and reaction time, but the recovery of tin was affected by volatilization of tin in high temperature and high silica region of basicity. In this study, the maximum recovery rate of tin was 94.8% at the experimental condition of 1200◦C, 2 h, and 0.55 of Na2O/SiO2 ratio. The major impurities in produced metal were Bi, Pb, Cu, Fe, and most of Bi, Pb, Cu were distributed to the metal phase, but the distribution of Fe was closely related to basicity.

AB - Tin was recovered in metal from an industrial tin-bearing byproduct containing Na2SO4 by carbothermic reduction smelting, and the effects of basicity (Na2O/SiO2), temperature, and reaction time on the recovery of tin were studied. Na2SO4 was reduced by carbon and formed into sodium silicate slag (Na2O–SiO2) in the presence of SiO2. Tin content in slag decreased with the increase of Na2O/SiO2 ratio in slag, temperature, and reaction time, but the recovery of tin was affected by volatilization of tin in high temperature and high silica region of basicity. In this study, the maximum recovery rate of tin was 94.8% at the experimental condition of 1200◦C, 2 h, and 0.55 of Na2O/SiO2 ratio. The major impurities in produced metal were Bi, Pb, Cu, Fe, and most of Bi, Pb, Cu were distributed to the metal phase, but the distribution of Fe was closely related to basicity.

KW - Carbothermic reduction smelting

KW - Sodium sulfate

KW - Tin recovery

KW - Tin volatilization

KW - Tin-bearing material

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U2 - 10.3390/met11111697

DO - 10.3390/met11111697

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SN - 2075-4701

VL - 11

JO - Metals

JF - Metals

IS - 11

M1 - 1697

ER -

The recovery of metallic tin from an industrial tin-bearing by-product containing Na₂SO₄ by reduction smelting process

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Keywords

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