Study of Modification of High Temperature Melting Compound Steel Slag-Fly Ash

Abstract:

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Reconstruction of high temperature melting compound steel slag-fly ash can be effectively digest f-CaO in steel slag. The experimental result shows that the f-CaO contents in modified slag is greatly affected by fly ash addition(respectively 5%, 7%, 14%) when the temperature is 1580°C and constant temperature is 30min, the digestion rates are respectively 56.99%,63.69%,68.55%. Modified mineral content of the steel slag changes greatly, mainly reflects at enormous increase in magnetite, dicalcium silicate, tricalcium silicate, wustite and vitreous. By micro-structure analysis of several kinds of modified slag mineral, tricalcium silicate mainly shape for branch of tree, dicalcium silicate is in the form of a circular, wustite and vitreous mainly distribute in aggregation state. The above minerals can increase cementitious activity for modified slag becoming cement.

Info:

Periodical:

Advanced Materials Research (Volumes 291-294)

Edited by:

Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu

Pages:

1851-1855

DOI:

10.4028/www.scientific.net/AMR.291-294.1851

Citation:

Y. Long et al., "Study of Modification of High Temperature Melting Compound Steel Slag-Fly Ash", Advanced Materials Research, Vols. 291-294, pp. 1851-1855, 2011

Online since:

July 2011

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Price:

$35.00

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