掺铬铁渣的铝镁系浇注料的制备与性能研究  

Preparation and properties of alumina-magnesia castables doped with ferrochrome slag

作　　者：张韶华[1] 刘来宝[1] 谭克锋[1] 张登科 唐凯靖[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]四川乐山鑫河电力综合开发有限公司,四川乐山614700

出　　处：《耐火材料》2014年第6期436-438,442,共4页Refractories

基　　金：四川省教育厅项目(10zd1104);西南科技大学研究生创新基金资助(14ycxjj0007)

摘　　要：为了综合利用生产高碳铬铁合金时产生的铬铁废渣,采用50%(w)的电熔镁砂颗粒、41%(w)的电熔镁砂粉+铬铁渣粉、5%(w)的高铝水泥、4%(w)的硅微粉制备了掺加铬铁渣的铝镁系浇注料,并研究了掺加不同量铬铁渣粉(镁砂粉与铬铁渣粉的质量比分别为0 10、1 10、2 10和3 10)的该浇注料经1 200℃3 h烧后的线变化率、体积密度、显气孔率、常温抗折强度、常温耐压强度、抗热震性和抗渣性。结果表明:掺加41%(w)铬铁渣的铝镁系浇注料经1 200℃3 h烧后的综合性能最佳,其常温耐压强度可达55 MPa,抗热震性和抗渣性良好。Alumina-magnesia castables were prepared based on the formulation of 50% fused magnesite particles,41% fused magnesite powders＋ferrochrome slag,5% high-alumina cement,and 4% microsilica powders in mass to further utilize the ferrochrome waste slag producing during the high carbon ferro-chrome production.The influence of ferrochrome slag addition （the mass ratios of fused magnesite pow-ders to ferrochrome slag were 0 10,1 10,2 10 and 3 10,respectively）on permanent linear change on heating,bulk density,apparent porosity,cold modulus of rupture,cold crushing strength,thermal shock re-sistance and slag resistance of castables fired at 1 200 ℃for 3 h were investigated.The results show that：the alumina-magnesia castable doped with 41% ferrochrome slag fired at 1 200 ℃ for 3 h has the best properties：55 MPa of cold crushing strength,and excellent thermal shock resistance and slag resistance.

关 键 词：铬铁渣 铝镁系浇注料 性能 抗热震性 抗渣性 

分 类 号：TQ175[化学工程—硅酸盐工业]