含铜蚀刻废液的综合利用——中和沉淀后母液的处理工艺探讨

The Comprehensive Utilization of the WasteSolution Containing Copper

酸性蚀刻废液与碱性蚀刻废液混合沉淀铜后，母液中含有大量的氯化铵，少量的铜离子．用水合肼还原除去铜离子后，回收所得氯化铵溶液可直接用于蚀刻液的生产．通过对处理工艺探讨，找到了处理母液的最佳方法．

The mother liquor contains considerable ammonium chloride and a little copper cation after the copper is deposited by mixing the acid and basic canterization solution.After using hydrazine getting rid of copper cation,the ammonium is recycled,then directly use it to produce.We have studild on the resolution technology,then found the best way to resolve the mother liquor.This way is easy and useful.It is worthy of application and extension.