Kinetics of Cobalt Extraction with P_(5709)

Zhou Yongchuan and Li Zhou(Department of Chemical Engineering; Tsinghua University)

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Kinetics of Cobalt Extraction with P_(5709)

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- Kinetics of Cobalt Extraction with P_(5709)
- CIESC Journal Issue 1, (1986)
- 作者机构：
  
  华东化工学院,清华大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 March 1986，
  
  Published：25 March 1986
- 稿件说明：
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Zhou Yongchuan and Li Zhou(Department of Chemical Engineering, Tsinghua University). Kinetics of Cobalt Extraction with P_(5709)[J]. CIESC Journal, 1986, (1).
DOI：

Zhou Yongchuan and Li Zhou(Department of Chemical Engineering, Tsinghua University). Kinetics of Cobalt Extraction with P_(5709)[J]. CIESC Journal, 1986, (1). DOI：

摘要

本文采用恒界面池(通称为Lewis池)研究了P_5709萃取钴的动力学过程.通过改变搅拌强度

两相接触表面积和操作温度判定P_(5709)萃取钴的过程为扩散控制.另外通过改变水相料液中的初始钴浓度或加进常量镍研究了钴在萃取过程中萃取传质系数的变化;实验及计算结果表明

在萃取过程中总传质系数K(K_ω或K_o)不是常数.文中对其变化规律及产生变化的原因进行了初步的探讨.

Abstract

The kinetics of cobalt extraction with P5709 has been studied in a Lewis cell. The aqueous phase consisted of Co2+ (0.5-5g/l) and Na2SO4 (9%) at pH = 5.5

and the organic phase

15%(V/V) P5709 and 85%(V/V) kerosene

saturated with hydrogen. In order to determine the controlling regime of the extraction process

the stirring speed

the interface area between the two phases and the op-erating temperature were varied in the experiments

the results showed that cobalt extraction with P5709 was

mainly diffusion-controlled

with the following overall mass-transfer coefficients: Both experimental and calculation results showed that neither Kw nor Ko remained constant during extraction. The reasons for this variation wera discussed.

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