Fundamental Research on Gasification Dephosphorization with Coke Powder Reducing Converter Molten Slag

Abstract:

In order to realize the gasification dephosphorization process in converter slag splashing stage for avoiding the P enrichment, and the dephosphorized slag can be left for recycling in subsequent furnaces. The experiment of reduction of converter slag by coke powder in laboratory was carried out, The results show that with the increase of the experimental temperature, the gasification dephosphorization rate of coke powder gradually increases, and the gasification dephosphorization rate reaches up to 82.35% at 1900K. The gasification dephosphorization rate decreases with the increase of slag basicity. When the coke powder is added in a sufficient amount, increasing properly the FeO content of slag is favorable for the gasification dephosphorization reaction; when the coke particle size is between 0.5 and 2.5 mm, the gasification dephosphorization rate changed little, about 58%, but when the coke particle size between 2.5 and 3.5mm, the gasification dephosphorization rate dropped to 52%. The results provide some theoretical guidance for industrial development.

• Periodical: Key Engineering Materials (Volume 814)
• Pages: 182-189
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.814.182
• Online since: July 2019
• Authors: Chen Xiao Li*, Yue Kai Xue, Shu Huan Wang
• Keywords: Converter Steelmaking, Gasification Dephosphorization, Recycle Utilization, Slag Splashing, Slagging

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