REDUCTION KINETICS OF ACICULAR UITRAFINE α-Fe_2O_3 PARTICLES BY TPR TECHNOLOGY

李春忠; 洪智富; 朱以华; 郑柏存; 胡黎明

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REDUCTION KINETICS OF ACICULAR UITRAFINE α-Fe_2O_3 PARTICLES BY TPR TECHNOLOGY

更新时间：2025-12-16

- REDUCTION KINETICS OF ACICULAR UITRAFINE α-Fe_2O_3 PARTICLES BY TPR TECHNOLOGY
- CIESC Journal Issue 6, (1995)
- 作者机构：
  
  华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所,上海,200237
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q58
- Online First：25 December 1995，
  
  Published：25 December 1995
- 稿件说明：
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李春忠, 洪智富, 朱以华, et al. REDUCTION KINETICS OF ACICULAR UITRAFINE α-Fe_2O_3 PARTICLES BY TPR TECHNOLOGY[J]. CIESC Journal, 1995, (6).
DOI：

李春忠, 洪智富, 朱以华, et al. REDUCTION KINETICS OF ACICULAR UITRAFINE α-Fe_2O_3 PARTICLES BY TPR TECHNOLOGY[J]. CIESC Journal, 1995, (6). DOI：

摘要

在针形γ-Fe_2O_3磁粉制备过程中

还原过程是关键步骤之一

本文利用程序升温还原技术研究了针形超微粒a-Fe_2O_3还原过程机理

建立了还原过程动力学研究方法

得到了a-Fe_2O_3在氮氢混合气体中还原动力学方程

并进一步研究了该还原过程动力学特征

给出了还原过程的优化操作条件.

Abstract

The reduction process is very important for acicular magnetic powder preparation. In this paper

the mechanism of acicular ultrafine a-Fe2O3 particle reduction process was investigated by TPR

The study method for reduction kinetics was established and the operation condition was investigated. The kinetic equation for α-Fe2O3 reduction was proposed. This equation can be used at 300℃-450℃ for the reduction of pure α-Fe2O3 particles. The optimized temperature for acicular α- Fe2O3 powder reduction was at 360℃-400℃.

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