A Study on Thermal Stabilization of Spent Foundry Sand


Article Preview

Thermal stabilization is used to reduce the turbidity of spent foundry sands (SFSs). Effect of stabilized temperature and thermal stabilized time in thermal stabilization is estimated by turbidity of SFSs in thermal stabilization. The turbidity of furan sand is 984 FAU and almost 15 times as high as that of other sands such as CO2 sand and green sand. Furan sand contains furan resin, but CO2 sand and green sand do not use resin chemicals. The turbidity of furan sand can be reduced by stabilization of furan resin in thermal process. In the process of thermal stabilization, fixation of furan resin by heating occurs and resin can be in the state of insolubility. The turbidity of furan sand is sharply decreased within thermally stabilized time of 2 hrs and decreased with increasing stabilized temperature. Turbidity in thermal stabilized time of 2hrs and stabilized temperature of 600°C is almost 10 FAU. Hence, thermal stabilization can be applied to reduce the turbidity of SFSs generated from iron foundry industry.



Materials Science Forum (Volumes 544-545)

Edited by:

Hyungsun Kim, Junichi Hojo and Soo Wohn Lee




S. W. Rhee, "A Study on Thermal Stabilization of Spent Foundry Sand", Materials Science Forum, Vols. 544-545, pp. 507-510, 2007

Online since:

May 2007





[1] Seung-Whee Rhee, Se-Il Yang, Sam-Yong Choi, Hyong-Hee Yoon, A Study on Turbidity ans ORP of the Mixture of Foundry sand and Loess, Proceeding of the 2004 Spring Conference of the Korea Society of Waste Management, (2004) pp.111-114.

[2] Seung-Whee Rhee, and Hyung-Hee Yoon, A Study on Physico-Chemical Property and Extraction Characteristics of Spent Foundry Sands, J. Korea Society of Waste Management, Vol. 21(8), (2004) pp.851-858.

[3] K.C. Bastian, and J.E. Alleman, Microtox Characterization of Foundry Sand Residuals, Waste Management, Vol. 18, (1998) pp.227-234.

DOI: https://doi.org/10.1016/s0956-053x(98)00030-0

[4] J. D Smith, H. Fang, and K. D Peaslee, Characterization and Recycling of Spent Refractory wastes from Metal Manufactures in Missouri, Resources, Conservation and Recycling, Vol. 25, (1999) p.151169.

DOI: https://doi.org/10.1016/s0921-3449(98)00050-0