[1]万 辉,夏 栋.doi: 10.3969/j.issn.1001-3849.2026.02.016用萃取和蒸发反萃回收和提浓氯化铁蚀刻废液[J].电镀与精饰,2026,(02):135-140.
　WAN Hui,XIA Dong.Recovery and concentration of waste ferric chloride etching liquid by extraction and evaporation stripping[J].Plating & Finishing,2026,(02):135-140.
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doi: 10.3969/j.issn.1001-3849.2026.02.016用萃取和蒸发反萃回收和提浓氯化铁蚀刻废液()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2026年02
页码:
135-140
栏目:
出版日期:
2026-02-28

文章信息/Info

Title:
Recovery and concentration of waste ferric chloride etching liquid by extraction and evaporation stripping
作者:
万 辉1; 夏 栋2
(1. 湖南长城信息金融设备有限责任公司,湖南 长沙 410000 ;2. 长沙华时捷环保科技发展股份有限公司,湖南 长沙 410000)
Author(s):
WAN Hui1;  XIA Dong2
(1. Hunan Great Wall Information Finance Equipment Co., Ltd., Changsha 410000, China; 2. Changsha Hasky Environmental Protection Science and Technology Development Co., Ltd., Changsha 410000, China)
关键词:
蚀刻液; 铁; 异丙醚; 萃取; 蒸发
Keywords:
etchant;  iron;  diisopropyl ether;  extraction;  evaporation
分类号:
X78；TQ150
文献标志码:
A
摘要:
采用异丙醚对三氯化铁蚀刻废液中的铁进行萃取分离，对萃取后的负载有机相进行蒸发反萃，得到高浓度的三氯化铁溶液回用。研究了在不同盐酸浓度的水相、不同O/A比条件下各成分的萃取情况以及在负载有机相中加入不同水量条件下的蒸发情况。结果表明：水相中盐酸浓度在5～6 mol/L时，可避免大量异丙醚溶于水中，且三价铁的萃取率可达95%；采用多级逆流萃取的方式，可降低水相中的盐酸浓度，有利于萃余液中的金属回收。萃取饱和后有机相中的盐酸、三价铁和异丙醚的比例，接近氧鎓盐萃取的化学反应方程式。对负载有机相蒸发至100 ℃时，异丙醚回收率为96%～97%，且可通过控制蒸发时的加水量，最终得高浓度氯化铁溶液进行回用。
Abstract:
The iron in the waste liquid of ferric chloride etching was extracted and separated by diisopropyl ether. The extracted loaded organic phase was subjected to evaporation and back extraction to obtain a high-concentration ferric chloride solution for recycling. The extraction behaviors of various components were studied under different hydrochloric acid concentrations in the aqueous phase and different O/A ratios. Also, the evaporation conditions of the loaded organic phase with different amounts of water added were investigated. The results show that when the hydrochloric acid concentration in the aqueous phase is 5~6 mol/L, a large amount of diisopropyl ether can be prevented from dissolving in water, and the extraction rate of trivalent iron can reach 95%. By adopting the multistage countercurrent extraction method, the hydrochloric acid concentration in the aqueous phase can be reduced, which is beneficial to the recovery of metals in the raffinate. The ratio of hydrochloric acid, ferric ions, and diisopropyl ether in the organic phase after saturated extraction is close to the chemical reaction equation of oxonium salt extraction. When the loaded organic phase is evaporated to 100 °C, the recovery rate of diisopropyl ether is 96%~97%. And by controlling the amount of water added during evaporation, a high-concentration ferric chloride solution can finally be obtained for recycling.

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更新日期/Last Update: 2026-02-09