Removal Phosphorous from High Phosphorous Converter Steel Making Slag by Hydrometallurgical Process

Abstract:

Removing phosphorus from high phosphorus converter steel slag by hydrometallurgical method was studied in this paper. The influence of different dephosphorizting agents on the effect of phosphorus slag was investigated, and high efficient dephosphorizating agent was found. The effects of reaction time, liquid to solid ratio, stirring speed, reaction temperature and dephosphorizing agent concentration on the impact of dephosphorization were studied. The results showed that on the conditions of the reaction time 40 min, slag particle size <0.147 mm, liquid to solid ratio of 4:1, stirring speed 400 rpm, the reaction temperature 25 °C, and dephosphorizing agent concentration 5 mol/L, the optimum dephosphorization results were achieved. The dephosphorization ratio can reach 70%, and the phosphorus content in steel slag decreased from 1.03% to 0.46%, the total iron content increase from 30.676% to above 44%.

• Periodical: Advanced Materials Research (Volumes 581-582)
• Pages: 940-943
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.581-582.940
• Online since: October 2012
• Authors: Wen Tang Xia, Xue Jiao Zhou, Jian Guo Yin, Yi Feng Gao, Wen Qiang Yang, Juan An
• Keywords: Converter, Dephosphorization, High-Phosphorus Steel Slag, Hydrometallurgical Process

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