pH control in iron precipitation process based on parameter self-tuning fuzzy controller

LI Yonggang; YANG Gen; YANG Chunhua

doi:10.3969/j.issn.0438-1157.2013.12.043

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pH control in iron precipitation process based on parameter self-tuning fuzzy controller

更新时间：2025-12-10

- pH control in iron precipitation process based on parameter self-tuning fuzzy controller
- CIESC Journal Issue 12, Pages: 4557-4562(2013)
- 作者机构：
  
  中南大学信息科学与工程学院,湖南,长沙,410083
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.12.043
  CLC： P273
- Online First：05 December 2013，
  
  Published：05 December 2013
- 稿件说明：
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LI Yonggang, YANG Gen, YANG Chunhua. pH control in iron precipitation process based on parameter self-tuning fuzzy controller[J]. CIESC Journal, 2013, (12): 4557-4562.
DOI：

LI Yonggang, YANG Gen, YANG Chunhua. pH control in iron precipitation process based on parameter self-tuning fuzzy controller[J]. CIESC Journal, 2013, (12): 4557-4562. DOI： 10.3969/j.issn.0438-1157.2013.12.043.

摘要

针对沉铁过程存在的非线性、强耦合导致溶液pH值难以稳定控制的问题，分析了沉铁过程的工艺及其反应动力学机理。研究了锌焙砂添加量与pH值之间的关系，并根据工艺对pH值的要求，计算沉铁过程所需添加的焙砂量。在此基础上，采用参数自整定模糊控制器对锌焙砂添加量进行补偿调节，从而实现pH值的稳定控制。仿真结果表明：所提出的参数自整定模糊控制器效果良好，为沉铁过程pH值的稳定控制提供了一种切实可行的方法。

Abstract

Iron precipitation is the key process for iron removal in zinc hydrometallurgy.In iron precipitation process

it is very important to stabilize the pH value of the solution.However

the pH value fluctuates strongly in practice because of the nonlinearity and coupling in iron precipitation process. At first

the reaction kinetics mechanism of iron precipitation is analyzed.Then

the relationship between the pH value of the solution and the amount of zinc calcine (AZC) added into the solution is researched and the AZC added into the solution is calculated according to the technical requirement of pH value. At last

the parameter self-tuning fuzzy controller is proposed to adjust AZC added into the solution. Simulation results show that the parameter self-tuning fuzzy controller is very effective and it is a feasible method to stabilize pH value in iron precipitation process.

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