摘要
为提升赤泥等含Na^+量高的工业固体废弃物制备建材的耐久性,利用水热法模拟建材生产工艺条件下液相中Na^+转移至固相的研究,分析建材孔隙液中Na^+固定化于固相的产物。经SEM/EDS、XRD、FTIR分析,液相中Na^+经水热反应固定于含有[AlSiO_4]结构的钙霞石。经水热法模拟建材孔隙液中Na^+的固定化途径探索,建材孔隙液中Na^+可在建材生产工艺条件下形成含有[AlSiO_4]结构的钙霞石,提升赤泥等含Na^+量高的工业固体废弃物制备建材的耐久性。
To elevate the durability of building materials prepared by industrial solid waste with high Na＋ content such as red mud,the way on the transfer of Na＋ to solid phase in liquid phase under the process of building material production by hydrothermal method was studied,and the products of Na＋ fixed to solid phase in the pore fluid of building materials were analyzed. By analysis of SEM/EDS,XRD and FTIR,Na＋ in liquid phase was fixed on the cancrinite containing the [AlSiO4]structure by hydro-thermal reaction. Simulation of the immobilization of Na＋ in the pore fluid of building materials by hydro-thermal method was explored. The soluble Na＋ in the pore solution of building materials can be fixed on by cancrinite and existed stably in the block of building materials. The durability of building materials prepared by industrial solid waste with high Na＋ content such as red mud could be promoted by the structure of [AlSiO4]in cancrinite.
作者
钟晨
ZHONG Chen(Guangdong Association of Circular Economy and Resources Comprehensive Utilization,Guangdong Guangzhou 510095,China)
出处
《广州化工》
CAS
2018年第11期50-51,76,共3页
GuangZhou Chemical Industry
关键词
水热法
可溶性Na
钙霞石
hydro-thermal method
soluble sodium
cancrinite
