陕西科技大学学报(自然科学版)2004，Vol.22Issue(5)：8-16,9.
将水热固化无机废料转变为建筑材料的研究
HYDROTHERMAL SOLIDIFICATION OF INORGANIC WASTERS TO BUILDING MATERIALS
景镇子 1松冈范久 1金放鸣 2桥田俊之 1山崎促道1
作者信息
- 1. 日本东北大学大学院环境科学研究科,日本,仙台,980-8579
- 2. 日本东北大学大学院工学研究科,日本仙台,980-8579
- 折叠
摘要
Abstract
Municipal incineration ash (MIA) has been solidified by hydrothermal processing. The MIA was first compacted in a model at 5～20MPa, and then hydrothermally cured in an autoclave at temperature 150～250℃ for 10～72h. Experimental results showed that the tensile strength of solidified body was very sensitively to concentration of NaOH solution and the cement content in the MIA. The autoclave curing temperature exerted a significant influence on mechanical property of specimens. However,a higher curing temperature leaded to decrease in tensile strength. It was shown that the strength development was due mainly to the formation of tobermorite. Amounts of dissolved heavy metals from the solidified bodies were determined, and our results demonstrated that the heavy metals was very low well below the regulatory level of the environmental quality standard in Japan. As such, the hydrothermal processing may have a high potential for recycling/reusing MIA on a large scale.关键词
城市废物焚化灰/固化/水热处理/重金属/循环利用Key words
miunicipal incineration ash/solidification/hydrothermal processing/heavy metals/becycling分类
数理科学引用本文复制引用
景镇子,松冈范久,金放鸣,桥田俊之,山崎促道..将水热固化无机废料转变为建筑材料的研究[J].陕西科技大学学报(自然科学版),2004,22(5):8-16,9.
