LF炉精炼渣资源化特性  

Resources Characteristics of LF Refining Slag

作　　者：任雪[1] 李辽沙[1] 

机构地区：[1]安徽工业大学安徽省冶金工程与资源综合利用重点实验室,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2009年第4期338-340,344,共4页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省科技平台项目(06094039)

摘　　要：采用化学成份分析、XRD,SEM,EDS对LF炉精炼渣资源化特性进行检测、分析。结果表明:LF炉精炼渣中w(Al2O3)=20%～40%,主要存在两个含铝矿物相C12A7,C3A。其中:C12A7为基底相,C3A呈中心对称的条索状三维结构,易于机械单体解离,便于选矿分离利用。此外,LF炉渣中w(f-CaO)<10%,w(C3A)=21.67%,w(C12A7)=58.67%,C12A7相中w(Al2O3)=78.86%。LF炉精炼渣活性较高,极易通过化学手段将原有结构破坏,无需煅烧,可直接进行酸碱处理提取Al2O3。The properties of LF refining slag were studied with compositional analysis, XRD, SEM, EDS, etc. The results showed that LF refining slag with w（Al2O3） =20%-40%, has two main phase： C3A and C12A7. C12A7 is basis phase, and C3A phase is central symmertrical 3-D structure with clavated antenna extending in different directions. It is easy to separate mechanically and utilize after mineral processing. In addition, w（f-CaO）〈10%, while w（C3A） is about 21.67%, and w（ C12A7 ） is about 58.67% in LF refining slag, and w（Al2O3） in C12A7 is about 78.85 %. High activated LF refining slag was easily destroyed by chemical means, and Al2O3 can be extracted through acidolysis without calcineding.

关 键 词：LF炉精炼渣 资源化特性 AL2O3 

分 类 号：TF111.173[冶金工程—冶金物理化学]