Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag

Qing Zhao; Cheng-jun Liu; Tian-ci Gao; Long-hu Cao; Mao-fa Jiang

doi:10.1007/s12613-018-1665-9

Volume 25 Issue 10

Oct. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(10): 1140-1147

Qing Zhao, Cheng-jun Liu, Tian-ci Gao, Long-hu Cao, and Mao-fa Jiang, Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag, Int. J. Miner. Metall. Mater., 25(2018), No. 10, pp. 1140-1147. https://doi.org/10.1007/s12613-018-1665-9

Cite this article as:

Qing Zhao, Cheng-jun Liu, Tian-ci Gao, Long-hu Cao, and Mao-fa Jiang, Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag, Int. J. Miner. Metall. Mater., 25(2018), No. 10, pp. 1140-1147. https://doi.org/10.1007/s12613-018-1665-9

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Research Article

Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag

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Corresponding author:
Qing Zhao E-mail: zhaoq@smm.neu.edu.cn
Received: 27 January 2018; Revised: 16 March 2018; Accepted: 20 April 2018

Abstract

Abstract

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.
- stainless steel slag;
- spinel;
- crystal growth;
- melting modification;
- shear force;
- chromium sequestration

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