Carbothermal reduction of sillimanite in a transferred arc thermal plasma reactor

被引：9

作者：

Vijay, M. ^{[1
]}

Ananthapadmanabhan, P. V. ^{[2
]}

Ramachandran, K. ^{[1
]}

Hiremath, G. ^{[1
]}

Mathai, C. B. ^{[1
]}

Nalini, B. ^{[3
]}

Pillai, B. C. ^{[1
]}

机构：

[1] Karunya Univ, Ctr Res Mat Sci & Thermal Management, Coimbatore 641114, Tamil Nadu, India

[2] Bhabha Atom Res Ctr, Laser & Plasma Technol Div, Bombay 400085, Maharashtra, India

[3] Karunya Univ, Ctr Res Nanotechnol, Coimbatore 641114, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2013年 / 36卷

关键词：

Sillimanite processing; Carbothermal reduction; Transferred arc plasma processing; Mullite; Alumina; Alumina silicon carbide; BEACH SAND; MULLITE FORMATION; ALUMINA; SIZE;

D O I：

10.1016/j.ijrmhm.2012.08.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conversion of sillimanite to value-added ceramic materials was investigated by transferred arc plasma processing using nitrogen as the plasma gas. Plasma processing was carried out using sillimanite and sillimanite-carbon mixtures at different power levels. The products were characterized by XRD, SEM and FTIR techniques. Thermodynamic analysis using free energy minimization principle was used to predict the products formed and also analyze the experimental results. The results of these investigations showed that sillimanite can be converted to mullite, or alumina and silicon carbide by careful choice of the operating conditions and sillimanite-carbon ratio. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：174 / 178

页数：5

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