摘要
针对铝型材表面处理工艺中产生大量碱洗废液，而且含有“长寿碱蚀剂”，提出了生石灰处理工艺。该工艺简单，效果好，铝去除率最高可达９７％，碱回收率可在８０％左右，可以实现工业化生产。同时，该法原料价格低廉易得，实现闭路循环，其副产品ＣａＣｌ２·２Ｈ２Ｏ，Ａｌ２（ＳＯ４）３·１８Ｈ２Ｏ和ＣａＳＯ４等均具有较高利用价值。
A new limestone treatment process was developed for the waste alkaline etchant,containing alkaline etching reagent,from mat-forming treatment of aluminum.The simple and efficient process has the highest Al reduction rate of 97% and NaOH recovery rate of 80% and can realize commercial production. Additionally it requires cheap raw materials and the by-products(CaCl22H2O,Al2(SO4)318H2O and CaSO4) also have high utilization values.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
1999年第4期24-26,共3页
Research of Environmental Sciences
关键词
铝型材
表面处理
碱蚀液
综合利用
废液回收
Aluminium
Mat-forming treatment
Alkaline etchant
Recovery
Comprehensioe utilizaton
