摘要
提高废弃渣土和低品位原料在陶瓷生产中的使用率是解决陶瓷原料短缺的重要途径。盾构施工产生大量盾构泥,由于其较高的铁含量影响陶瓷制品的白度,盾构泥不能直接用于陶瓷生产。本论文针对盾构泥铁含量过高的问题进行了详细的除铁技术研究。采用物理磁选除铁技术,盾构泥中的铁含量降低了26.64%,陶瓷的白度达到21.08%;利用0.5 mol/L草酸浸泡4 h的化学反应除铁技术,盾构泥中的铁含量降低了77.37%,陶瓷的白度达到31.43%。本研究为盾构泥及低品位原料的除铁技术提供了一些新思路。
Increasing the utilization rate of waste muck and low-grade raw materials in ceramic production is an important way to solve the shortage of ceramic raw materials.A large amount of shield muck is produced by the shield construction,but its high iron content will affect the whiteness of the ceramic products.Therefore,the shield mud cannot be used for the ceramic production directly.This work has carried out a detailed study of iron removal technology on the problem of excessive iron content in the shield mud.Using the iron removal technology of physical magnetic separation method,the iron content in the shield mud was reduced by 26.64%,and the whiteness of the ceramic production reached 21.08%;Using the iron removal technology of chemical reaction method with the 0.5 mol/L oxalic acid soak for 4 h,the iron content in the shield mud was reduced by 77.37%,and the whiteness of the ceramic production achieved 31.43%.This work provides some new ideas for the iron removal technology of shield mud and low-grade raw materials.
作者
乔国龙
税安泽
钟欣蓉
袁海光
QIAO Guo-Long;SHUI An-Ze;ZHONG Xin-Rong;YUAN Hai-Guang(Guangdong Yuehai Pearl River Delta Water Supply Co.,Ltd,Guangzhou,511455 China;South China university of Technology College of Material Science and Technology,Guangzhou,510641 Ch ina)
出处
《现代技术陶瓷》
CAS
2022年第2期129-137,共9页
Advanced Ceramics
基金
珠江三角洲水资源配置工程项目(CD88-GC02-2020-0012)。
关键词
盾构泥
除铁
物理磁选法
化学反应法
陶瓷白度
Abstract:Shield mud
Iron removal technology
Magnetic selection method
Chemical reaction method
Ceramic whiteness
