Recovery of indium from In2O3 and liquid crystal display powder via a chloride volatilization process using polyvinyl chloride

Kye Sung Park; Wakao Sato; Guido Grause; Tomohito Kameda; Toshiaki Yoshioka

doi:10.1016/j.tca.2009.03.003

Recovery of indium from In₂O₃ and liquid crystal display powder via a chloride volatilization process using polyvinyl chloride

Kye Sung Park, Wakao Sato, Guido Grause, Tomohito Kameda, Toshiaki Yoshioka

Research output: Contribution to journal › Article

90 Citations (Scopus)

Abstract

Indium (In) was recovered from indium oxide (In₂O₃) and liquid crystal display (LCD) powder via a chloride volatilization process using polyvinyl chloride (PVC) as the chlorination agent. The recovery of In from In₂O₃ increased with an increasing molar Cl/In ratio in N₂ and air atmospheres. The degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 98.7% and 96.6%, for N₂ and air, respectively. The In recovery also increased notably with increasing temperature in N₂ atmosphere. In both atmospheres, the In recovery increased with an increasing degradation temperature of PVC. However, the In recovery from LCD powder was lower than that from In₂O₃. For LCD powder, the degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 66.7% and 54.1%, for N₂ and air, respectively.

Original language	English
Pages (from-to)	105-108
Number of pages	4
Journal	Thermochimica Acta
Volume	493
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tca.2009.03.003
Publication status	Published - 2009 Sep 10

Keywords

Chlorination
InO
Indium
Liquid crystal display
PVC
Recovery

ASJC Scopus subject areas

Instrumentation
Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Recovery of indium from In2O3 and liquid crystal display powder via a chloride volatilization process using polyvinyl chloride",

abstract = "Indium (In) was recovered from indium oxide (In2O3) and liquid crystal display (LCD) powder via a chloride volatilization process using polyvinyl chloride (PVC) as the chlorination agent. The recovery of In from In2O3 increased with an increasing molar Cl/In ratio in N2 and air atmospheres. The degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 98.7% and 96.6%, for N2 and air, respectively. The In recovery also increased notably with increasing temperature in N2 atmosphere. In both atmospheres, the In recovery increased with an increasing degradation temperature of PVC. However, the In recovery from LCD powder was lower than that from In2O3. For LCD powder, the degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 66.7% and 54.1%, for N2 and air, respectively.",

keywords = "Chlorination, InO, Indium, Liquid crystal display, PVC, Recovery",

author = "Park, {Kye Sung} and Wakao Sato and Guido Grause and Tomohito Kameda and Toshiaki Yoshioka",

year = "2009",

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language = "English",

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T1 - Recovery of indium from In2O3 and liquid crystal display powder via a chloride volatilization process using polyvinyl chloride

AU - Park, Kye Sung

AU - Sato, Wakao

AU - Grause, Guido

AU - Kameda, Tomohito

AU - Yoshioka, Toshiaki

PY - 2009/9/10

Y1 - 2009/9/10

N2 - Indium (In) was recovered from indium oxide (In2O3) and liquid crystal display (LCD) powder via a chloride volatilization process using polyvinyl chloride (PVC) as the chlorination agent. The recovery of In from In2O3 increased with an increasing molar Cl/In ratio in N2 and air atmospheres. The degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 98.7% and 96.6%, for N2 and air, respectively. The In recovery also increased notably with increasing temperature in N2 atmosphere. In both atmospheres, the In recovery increased with an increasing degradation temperature of PVC. However, the In recovery from LCD powder was lower than that from In2O3. For LCD powder, the degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 66.7% and 54.1%, for N2 and air, respectively.

AB - Indium (In) was recovered from indium oxide (In2O3) and liquid crystal display (LCD) powder via a chloride volatilization process using polyvinyl chloride (PVC) as the chlorination agent. The recovery of In from In2O3 increased with an increasing molar Cl/In ratio in N2 and air atmospheres. The degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 98.7% and 96.6%, for N2 and air, respectively. The In recovery also increased notably with increasing temperature in N2 atmosphere. In both atmospheres, the In recovery increased with an increasing degradation temperature of PVC. However, the In recovery from LCD powder was lower than that from In2O3. For LCD powder, the degree of In recovery at a Cl/In molar ratio of 11 and a temperature of 350 °C was 66.7% and 54.1%, for N2 and air, respectively.

KW - Chlorination

KW - InO

KW - Indium

KW - Liquid crystal display

KW - PVC

KW - Recovery

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