Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag

被引：0

作者：

ZHAO Hai-quan ^{[1
,2
]}

QI Yuan-hong ^{[1
]}

SHI Yong-lin ^{[2
]}

NA Xian-zhao ^{[1
]}

FENG Huan-lin ^{[2
]}

机构：

[1] State Key Laboratory of Advanced Steel Processing and Materials,Central Iron and Steel Research Institute

[2] Technology Centre,Taiyuan Iron and Steel(Group)Co.,Ltd.

来源：

Journal of Iron and Steel Research(International) | 2013年 / 20卷 / 04期

关键词：

AOD stainless steel slag; disintegration; modification treatment;

D O I：

10.13228/j.boyuan.issn1006-706x.2013.04.015

中图分类号：

X756 [冶金工业];

学科分类号：

083002 ;

摘要：

During the cooling process of AOD(argon-oxygen decarburization)stainless steel slag,the serious disintegrating problem happened,which will cause serious environmental pollution.The disintegrating mechanism of the AOD slag was analyzed in detail,and experimental research on prevention of disintegrating of AOD stainless steel slag was developed by adjusting the basicity of the slag and adding the quartz sand and borax.The disintegrating problem during the cooling process of AOD stainless steel slag is caused by the 2CaO·SiO2phase transformation fromα’-C2S toγ-C2S.By means of adjusting the basicity of the AOD stainless steel slag from 2to 1.5by adding quartz sand,disintegrating of slag was prevented.But the adding amount must arrive at 15% which increases the difficulty of industrialization.Disintegration of AOD stainless steel slag can be effectively controlled by adding borax,and the adding amount is only 0.5%-0.8%.This method can be easily industrialized.

引用

页码：26 / 30

页数：5

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