Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第10期
论文作者：Qing Zhao Cheng-jun Liu Tian-ci Gao Long-hu Cao Mao-fa Jiang
文章页码：1140 - 1147
摘 要：To improve the efficiency of melting modification for stainless steel（SS） slag, a shear force was introduced in this work and its effects on the spinel and silicate melt were experimentally investigated. The results indicated that the use of shear force changed the nucleation and growth behaviors of spinel and that the effects of shear force varied with its intensity. The aggregation behavior of spinel under different shear-force conditions was studied, revealing that large spinel clusters could be formed when the stirring speed was controlled. However, no notable change in the melt structure of the silicate was detected in this study. The optimal stirring speed for the melting modification treatment was 50 r·min-1, which substantially promoted spinel growth and aggregation, resulting in modified SS slag with excellent chromium sequestration capability.
Qing Zhao1,2，Cheng-jun Liu1,2，Tian-ci Gao1,2，Long-hu Cao1,2，Mao-fa Jiang1,2
1. Key Laboratory for Ecological Metallurgy of Multimetallic Minerals (Ministry of Education), Northeastern University2. School of Metallurgy, Northeastern University
摘 要：To improve the efficiency of melting modification for stainless steel（SS） slag, a shear force was introduced in this work and its effects on the spinel and silicate melt were experimentally investigated. The results indicated that the use of shear force changed the nucleation and growth behaviors of spinel and that the effects of shear force varied with its intensity. The aggregation behavior of spinel under different shear-force conditions was studied, revealing that large spinel clusters could be formed when the stirring speed was controlled. However, no notable change in the melt structure of the silicate was detected in this study. The optimal stirring speed for the melting modification treatment was 50 r·min-1, which substantially promoted spinel growth and aggregation, resulting in modified SS slag with excellent chromium sequestration capability.
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