Characteristics of steel slag under different cooling conditions

被引：335

作者：

Tossavainen, M.

Engstrom, F. ^{[1
]}

Yang, Q.

Menad, N.

Larsson, M. Lidstrom

Bjorkman, B.

机构：

[1] Lulea Univ Technol, Div Proc Metal, SE-97187 Lulea, Sweden

[2] Lulea Univ Technol, Div Mineral Proc, SE-97187 Lulea, Sweden

来源：

WASTE MANAGEMENT | 2007年 / 27卷 / 10期

关键词：

D O I：

10.1016/j.wasman.2006.08.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Four types of steel slags, a ladle slag, a BOF (basic oxygen furnace) slag and two different EAF (electric arc furnace) slags, were characterized and modified by semi-rapid cooling in crucibles and rapid cooling by water granulation. The aim of this work was to investigate the effect of different cooling conditions on the properties of glassy slags with respect to their leaching and volume stability. Optical microscopy, X-ray diffraction, scanning electron microscope and a standard test leaching (prEN 12457-2/3) have been used for the investigation. The results show that the disintegrated ladle slag was made volume stable by water granulation, which consisted of 98% glass. However EAF slag I EAF slag 2 and the BOF slag formed 17%), 1% and 1%) glass, respectively. The leaching test showed that the glass-containing matrix did not prevent leaching of minor elements from the modified slags. The solubility of chromium, molybdenum and vanadium varied in the different modifications, probably due to their presence in different minerals and their different distributions. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1335 / 1344

页数：10

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