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《China Sciencepaper》 2013-12
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Leaching and carbonation of steelmaking slag

Tang Haiyan;Sun Shaoheng;Liu Hui;Wang Shuang;Meng Wenjia;Li Jingshe;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing;  
In order to improve the leaching and carbonation rates of calcium and magnesium ions in steelmaking slag,the chemical and phase compositions have been analyzed with fluorescence spectrometer and X-ray diffraction(XRD).Also,the leaching of different amounts of hydrochloric acid and acetic acid and the effects of temperature and stirring conditions have been investigated. The results showed that hydrochloric acid as a leaching reagent can achieve good results with a leaching rate up to 93.4%,which was higher than the leaching rate of acetic acid 85.8%.Moreover,the purity of calcium carbonate is 91.02%and the conversion rate 56.5%.The leaching rate with acetic acid is higher than with hydrochloric acid at 80℃,and the stirring is favorable for ion leaching.
【Fund】: 高等学校博士学科点专项科研基金资助项目(20100006120008);; 北京市本科生科技创新项目(12020142)
【CateGory Index】: TF703;X757
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