文档介绍：
Study on self-reduction of manganese-rich slag briquette
containing carbon#
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XUE Zheng-liang, ZHANG Bo, ZHU Ting-ting, Dong Jiang*
(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,
Wuhan University of Science and Technology, Wuhan 430081,China)
Abstract: The self-reduction experiment of manganese-rich slag briquette containing carbon was
carried out in the high-temperature carbon tube furnace, and the main factors affecting the reduction
rate were analyzed, and the ic model of reduction was established. The results show that the
appropriate increase of alkalinity of briquette has obvious effect on improvement of reduction rate.
When the carbon ratio of briquettes is and its alkalinity is , the reduction rate can reach to 90%.
It can accelerate reduction and decrease reduction time when the appropriate flux CaF2 is added to the
briquettes. The apparent activation energy of chemical reaction is , and the apparent
activation energy of internal diffusion is by calculation. Therefore, the reduction rate of
briquettes is determined by the mass transfer of CO in the product layer.
Key words: Ferrous Metallurgy; manganese-rich slag briquettes containing carbon; self-reduction;
ic; tephroite
0 Introduction
The direct alloying technology of manganese ore used in converter ha