不锈钢AOD渣在冷却过程中由于晶格转变体积膨胀导致粉化，易造成粉尘污染。研究表明，出渣时喷入含硼改质剂能有效抑制AOD渣从β-C2S相向γ-C2S相的晶格转变，从而使粉化扬尘率降低90.1%。对无害化处理后的不锈钢AOD渣进行资源化利用探讨，结果显示，由于钢渣具有水硬胶凝活性，可作为水泥砂浆掺合料取代部分水泥，掺量范围应在0～30%之间。同时，对AOD渣及其水泥试块进行毒性浸出检测，结果表明，其中总铬、六价铬等浸出值均低于标准限值，不存在重金属浸出的问题，可进行后续资源化利用。
Owing to the lattice transformation during cooling process,the expansion and pulverization of stainless steel AOD slag would happen. Then,it will result in dust pollution easily. And it is indicated that the lattice transformation fromβ-C2S toγ-C2S can be effectively controlled by injecting boron modified agents during the deslagging,and the pul-verization rate of dust was reduced by 90.1%. The harmless treated stainless steel AOD slag can be used as cement mortar admixture as resource utilization,and the substitution rate for cement can be 0-30%. Meanwhile,according to the leach-ing toxicity test on AOD slag and its cement test block,the leaching of total Cr and Cr6+were both reduced to below the standard value. Thus,resource utilization of the treated stainless steel AOD slag can be realized.
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