Use of an integrated approach to characterize the physicochemical properties of foundry green sands

Carnin, R.L.P and Folgueras, M.V. and Luvizao, R.R. and Correia, S.L. and da Cunha, C.J. and Dungan, R.S. (2012) Use of an integrated approach to characterize the physicochemical properties of foundry green sands. Journal of Environmental Management. 543:150-155. 9 July 2012.

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Abstract

A fresh green sand, spent green sand, and a weathered spent green sand from a landfill were analyzed using diffractometry, electron microscopy, granulometry, spectrometry, and thermogravimetry. Our objective was to understand how the physicochemical properties of the green sands change from their original form after being subjected to the casting process, then after weathering at the landfill. A quantitative phase composition model was also postulated for each material based on thermogravimetric results and it was found to be the most reliable and informative quantitative data for this type of residue. The weathered sample, that remained in a landfill for two years, was found to be composed of almost pure sand. Because of the weathering process, it may be possible to use the wSGS as a virgin sand replacement in the regeneration system or in geotechnical applications where bentonite would affect the properties of the final product.

Item Type:	Article
NWISRL Publication Number:	1423
Subjects:	Soil
Depositing User:	Users 6 not found.
Date Deposited:	09 Jul 2012 16:25
Last Modified:	09 Jul 2012 16:25
Item ID:	1458
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1458