东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (7): 995-999.DOI: -

• 论著 • 上一篇    下一篇

加压酸浸-乳状液膜法提取红土矿中的镍

姜承志;翟秀静;张廷安;侯平;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50774020)

Extraction of Nickel(II) from laterite ore by pressure acid leaching-emulsion liquid membrane

Jiang, Cheng-Zhi (1); Zhai, Xiu-Jing (1); Zhang, Ting-An (1); Hou, Ping (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Jiang, C.-Z.
  • About author:-
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摘要： 采用Span80-TBP-NH3.H2O体系乳状液膜法提取红土矿浸出液中的镍,通过考察温度对反应速率的影响,确定该体系为化学反应控制过程;采用超声-加热联合与加热-离心联合两种破乳方法,对提取分离后的乳液进行破乳研究,乳液破乳率可达98%;采用红外光谱法研究乳状液膜传输镍的膜内反应过程,通过比较提取镍前、后乳液的红外光谱图,证明了膜内反应的发生;通过比较原始油相与破乳后油相的红外光谱图,证明经提取镍并破乳后,油相可以重复利用.采用加压酸浸-乳状液膜法提取红土矿中的镍,液膜重复利用后,提取效率仍可达80%.

关键词: 加压酸浸, 乳状液膜, 膜内反应, 镍, 红土矿

Abstract: An emulsion liquid membrane (ELM) process of Span80-TBP-NH3·H2O was presented for extraction of Nickel(II) from acidic leaching solution of laterite ore. The influence of temperature on the transport of Ni(II) through emulsion liquid membrane was studied, which showed that the emulsion liquid membrane(ELM) process of Span80-TBP-NH3·H2O was a chemical reaction controlling procedure. Demulsification experiments were carried out with ultrasonic-heating combined demulsification and heating-centrifugation combined emulsion breaking. The emulsion breaking rate may reach 98%. The membrane reactions in emulsion liquid membrane were investigated by FT-IR spectra method. The IR spectra comparison between the emulsions before and after nickel extraction confirmed the reactions in the membrane. The IR spectra comparison between the original oil and the oil after demulsification shows that the oil after demulsification can be reused. With such demulsified oil reused, the extraction rate of Nickel(II) from laterite ore can still reach 80% in the present pressure acid leaching-emulsion liquid membrane process.

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