文档介绍：
Study on volatility of manganese metal in reduction process
of manganese ore self-reduction pellets at high temperature#
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XUE Zheng-liang, ZHANG Bo, YU Yue, DONG Jiang*
(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,
Wuhan University of Science and Technology, Wuhan 430081,China)
Abstract: In order to study the thermodynamic and ics of Mn volatilization in the reduction
process, the self-reduction experiment of carbon-mixed manganese ore pellets was performed in carbon
tube furnace at high temperature. The results show that the Mn equilibrium vapor pressure es
higher and the Mn volatile quantity is increasing with the temperature increasing. A model, controlled
by both the interface chemistry reaction and diffusion in solid products layer is established. The
apparent activation energy of chemical reaction is the apparent activation energy of
internal diffusion is , so the volatility of Mn is controlled by the chemical reaction
rate.
Key words: ferrous metallurgy;volatility of Mn; Mn self-reduction pellet; thermodynamic;
ics
0 Introduction
Since the beginning of 1990’s, the direct alloying technology of manganese ore used in converter
has been studied [1~3]. Restrained by the imperfection of pretreatment of molten iron, large quantity
of converter slag and so on, the