摘要
锰渣中含有大量有害物质而污染环境,大量堆放或填埋是当前处理锰渣的主要方式。以黄土为对比实验,通过对锰渣在500~700℃间预烧,研究预烧后的锰渣在1040~1100℃烧结温度下的烧结特性。结果表明,随预烧温度和烧结温度的升高,锰渣坯块的烧失率增加,吸水率、气孔率急剧减小,而体积密度和抗折强度增大,这与超过1080℃时熔融液相的出现有关。经650~700℃预烧后的样品在1060~1080℃温度下烧结具有最佳的综合性能,其密度可达1.77~1.85 g/cm^3,抗折强度可达24.8~33.3 MPa,完全可用来制作建筑材料领域中的轻质烧结砖,或者作为相关建筑材料的辅助原料。
Manganese residue(Mn-residue)contains a large amount of hazardous substances those can result in the serious environmental pollution.The main way to dispose Mn-residue is the massive landfilling or stacking.Using yellow earth as a comparison,the sintering properties at 1040~1100℃sintering temperatures of Mn-residue after prefired at 500~700℃were studied.It is showed that,with the pre-firing and sintering temperatures rising,the weight loss of Mn-residue compacts increased,water absorption and porosity sharply lowed down,but their bulk densities and bending strengths both increased,which is closely linked with the appearance of melted liquid phase once exceeding 1080℃.When sintered at 1060~1080℃,the samples pre-fired at 650~700℃exhibited the best combination properties with 1.77~1.85 g/cm^3 bulk densities and 24.8~33.3 MPa bending strengths.Therefore,it is feasible for the pre-fired Mn-residue to use as the light sintered bricks in the filed of building materials,or as the auxiliary material for the related building materials.
作者
杨震
阴泽江
杨金玉
张杰
宋谋胜
YANG Zhen;YIN Zejiang;YANG Jinyu;ZHANG Jie;SONG Mousheng(Department of Physics and Electronic Engineering,Tongren University,Tongren 554300,Guizhou,China)
出处
《铜仁学院学报》
2018年第9期36-40,共5页
Journal of Tongren University
基金
贵州省科学技术联合基金(LH字[2016]7293号)
贵州省大学生创新创业训练项目(201710665007)
关键词
锰渣
预烧温度
烧结性能
对比
manganese residue
pre-firing temperature
sintering properties
comparison
