摘要
20世纪80年代,水泥回转窑烧成带与过渡带使用的主体耐火材料镁铬砖得到了迅速发展,由于其优良的性能使得镁铬砖得到推广,但是由于Cr6+的致癌性,它的存在会造成空气、水等污染,对动物或人产生极大伤害.于是,各种新的无铬碱性耐火材料开始被研制.本试验,粗颗粒采用不同粒级的电熔镁砂,细粉采用<200目的电熔镁砂和<320目的电熔共晶镁锆粉,以聚乙烯醇和木质素磺酸钙的混和溶液为结合剂,通过一定的工艺制成再结合镁锆制品,以期代替镁铬砖,本文主要研究再结合镁锆耐火材料性能.
Nineteen eighties,the sintering zone of cement rotary kiln and transition belt use main magnesia chrome brick because of its excellent performance,but the Cr6+ is carcinogenicity,which causes great harm to the air,water pollution,animal or human.Therefore,new basic refractory material of free of chrome began to be developed.This test,the raw material is made up of fused magnesite particles(particle size 0 to 3 mm),fine fused magnesite powder with the size less than 200 meshes and fine fused magnesia-zirconia’s powder with the size less than 320 meshes,polyvinyl alcohol and calcium lignosulfonate liquor being used as the combiner.This paper discusses the properties of re-bonded magnesium zirconium refractory.
出处
《河北建筑工程学院学报》
CAS
2012年第2期10-13,19,共5页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
张家口市2010年第二批科学技术研究与发展指导计划项目(1022019B)
关键词
再结合
镁锆耐火材料
无铬
碱性砖
回转窑
Re-bonded
Magnesia zirconium refractory
Free of Chrome
Basic bricks
Rotary kiln
