磷渣基仿石材的制备及机理初探
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摘要
以不同粒度磷渣为原料,采用自制水玻璃基激发剂激发磷渣潜在活性,研究了粉状粉渣、细磷渣和原状磷渣的比例,激发剂用量、养护制度等因素对试件强度的影响关系,以此为基础,通过正交试验优化了各因素最佳工艺条件,获得了试件抗折强度> 12 MPa、抗压强度接近90 MPa的优化方案。借助XRD、SEM对优化方案在不同养护时间试件进行了分析表征,初步探明了磷渣基仿石材强度形成过程和机理,研究成果可为其它具有潜在活性的工业废渣资源化利用提供理论支撑,对进一步提高我国工业废渣资源化利用率具有十分重要意义。
With different particle sizes of phosphorus slags as raw materials,this paper uses self-made waterglass base activator to activate the potential activity of phosphorus slags and studies the influence of factors like the proportion of powder slags,fine phosphorus slags and original phosphorus slags,the activator amount and the maintenance system on specimen strength. Based on the above,the optimal technological conditions of various factors are optimized through orthogonal tests,and the optimization scheme with the bending strength higher than 13 MPa and the compressive strength close to 90 MPa for the specimen is obtained. By virtue of XRD and SEM, the specimen characteristics at different maintenance periods are analyzed according to the optimization scheme. The forming process and principles of the imitated stone strength of phosphorus slag base are initially identified. The study results can provide theoretical support for resource utilization of other industrial residues with potential activity and are significant for further improving the resource utilization ratio of industrial residues in China.
With different particle sizes of phosphorus slags as raw materials,this paper uses self-made waterglass base activator to activate the potential activity of phosphorus slags and studies the influence of factors like the proportion of powder slags,fine phosphorus slags and original phosphorus slags,the activator amount and the maintenance system on specimen strength. Based on the above,the optimal technological conditions of various factors are optimized through orthogonal tests,and the optimization scheme with the bending strength higher than 13 MPa and the compressive strength close to 90 MPa for the specimen is obtained. By virtue of XRD and SEM, the specimen characteristics at different maintenance periods are analyzed according to the optimization scheme. The forming process and principles of the imitated stone strength of phosphorus slag base are initially identified. The study results can provide theoretical support for resource utilization of other industrial residues with potential activity and are significant for further improving the resource utilization ratio of industrial residues in China.
引文
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[9]史桂杰,周新涛,罗中秋,等.磷渣基胶凝材料固化含砷废渣影响因素研究[J].硅酸盐通报,2016,35(8):2623-2628.
[2]漆贵海,彭小芹,王玉麟.碱磷渣加气混凝土的微观形貌及水化产物[J].湖南大学学报(自然科学版),2014(2):114-118.
[3]陈明,孙振平,刘建山.磷渣活性激发方法及机理研究进展[J].材料导报,2013(21):112-116.
[4]汤金辉,邓敏,王爱国,等.磷渣在水及模拟水泥浆体孔溶液中的溶解特性[J].硅酸盐通报,2014,33(9):2180-2185.
[5]颜子博,彭佳,谢晓宇.磷渣在水泥工业中的应用[J].中国非金属矿工业导刊,2013(5):19-20.
[6]陈豪立,黄炉磷渣的综合利用途径[J].贵州化工,1999(4):7-9.
[7]Li D X,Shen J L,Mao L X,et al.Influence of admixturex on the properties of phosphorous slag cement[J].Cement and Concrete Research,2000,30(7):1169-1173.
[8]Li D X,Xu Z Z,Luo Z M,et al.The activation and hydration of glassy cementitious materials[J].Cement and Concrete Research,2002,32(7):1145-1152.
[9]史桂杰,周新涛,罗中秋,等.磷渣基胶凝材料固化含砷废渣影响因素研究[J].硅酸盐通报,2016,35(8):2623-2628.