Study on Extraction of Mesophase from Steel Slag by Potassium Hydroxide-Sucrose (KOSH) Solution Method

Abstract:

Article Preview

The mesophase (iron aluminate, etc.) in steel slag was extracted by potassium hydroxide-sucrose (KOSH) solution method. The effects of partical size of steel slag, temperature and time of extraction on dissolution of mesophase phase were studied. The composition and morphology of the residue were analyzed by XRD and SEM. The results show the mesophase in steel slag powders (the weight was and the fineness was) could be fully dissolved when 4.00 g sample with a fineness about 600m2/kg is used and extraction temperature is kept at 90 oC, however, other minerals in the steel slag could be hardly dissolved. The reason might be for that, in alkaline environment which provided by potassium hydroxide, the replacement of ions were took place between the mesophase in steel slag and the organic ligands formed by sugar and potassium hydroxide, and through the adsorption and polarization between ligand and steel slag surface, it will result in the decrease of activation energy of iron aluminate.

Info:

Periodical:

Edited by:

Z.S. Liu, L.P. Xu, X.D. Liang, Z.H. Wang and H.M. Zhang

Pages:

492-496

Citation:

Z. F. Li et al., "Study on Extraction of Mesophase from Steel Slag by Potassium Hydroxide-Sucrose (KOSH) Solution Method", Advanced Materials Research, Vol. 1015, pp. 492-496, 2014

Online since:

August 2014

Export:

Price:

$38.00

* - Corresponding Author

[1] Guo Jianxiu, Discuss and develop utilization of resources of slag simply, develop the circulation economy [J]. Sichuan Metallurgy, 2006 28(3) 21-24.

[2] Zhu Guilin, Sun Shushan. The influence of composition to the activity of steel slag powder [J]. China Steel, 2010(9): 20-24.

[3] LI Weifeng, WANG Jinggang. Study of Silicate Phase Extraction from Converter Slag by Salicylic Acid Methanol(SAM) Solution [J], Bulletin of the Chinese ceramic society, 2008, 2(27): 365-380.

[4] TANG Mingshu, YUAN Meiqi, HAN Sufen, et al. Journal of the Chinese Ceramic Society, 1979, 7 (1): 35-46.

[5] Li Zhaofeng, Zhou Zonghui, Shan Lifu. Existence Forms of Magnesium Oxide in Steel Slag by Chemical Phase Separation [J]. Advanced materials research, 2011, 177: 481-484. 14.