Mechanism of the Indium by Carbothermic Reduction Reaction from Indium Ore in Vacuum

Abstract:

In this paper, the calculation software HSC indium mine under vacuum carbothermal reduction reaction during the Gibbs free energy. The result show that when the pressure of 10-100Pa and temperature is 380-449K, In₂O₃ and C reaction to reaction thermodynamic conditions under pressure from the same system, material In₂O₃: C mole ratio is 1:3, needed to generate elemental In reaction temperature is the lowest. In₂O₃ generated In₂O thermal decomposition, with the loss of the system pressure, the initial reaction temperature from 1247K to 10Pa for 423K; Intermediate In2O pyrolysis generating elemental In, when the system pressure drop to 10 Pa, starting temperature dropped to 781K; InO reaction with products CO, as the system pressure is reduced, the gibbs free energy increase, therefore, step-down to InO reaction with CO. This study to provide experimental evidence for preparation of indium by carbothermic reaction of indium ore in vacuum. Keywords: Indium ore;Carbon thermal reduction;Vacuum; Thermodynamics;Introduction

• Periodical: Advanced Materials Research (Volume 1096)
• Pages: 256-261
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1096.256
• Online since: April 2015
• Authors: Yong Cheng Liu*, Yuan Chao Du, Xiao Hui Zhu, Yue Hua Xiao, He Yong Zhao, Xiao Li Cheng
• Keywords: Carbon Thermal Reduction, Indium Ore, Introduction, Thermodynamic, Vacuum

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