Test and Study on Pre-reduction of Stainless-Steel Dust at Intermediate and Low Temperature

俞晓; 李秋菊; 任东霞; 洪新

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Test and Study on Pre-reduction of Stainless-Steel Dust at Intermediate and Low Temperature

更新时间：2026-01-21

- Test and Study on Pre-reduction of Stainless-Steel Dust at Intermediate and Low Temperature
- Special Steel Vol. 31, Issue 4, Pages: 7-10(2010)
- 作者机构：
  
  上海大学现代冶金与材料制备重点实验室,上海,200072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：24 February 2010，
  
  Online First：20 November 2022，
  
  Published：20 November 2010
- 稿件说明：
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俞晓, 李秋菊, 任东霞, et al. Test and Study on Pre-reduction of Stainless-Steel Dust at Intermediate and Low Temperature[J]. Special Steel, 2010, 31(4): 7-10.
DOI：

俞晓, 李秋菊, 任东霞, et al. Test and Study on Pre-reduction of Stainless-Steel Dust at Intermediate and Low Temperature[J]. Special Steel, 2010, 31(4): 7-10. DOI：

摘要

中位粒径1.78μm的不锈钢粉尘的成分为(%):41.0Fe、3.3Ni、24.8O、2.6Cr、4.1Ca、3.6Zn

其主要相组成为Fe

、FeO·Cr

、CrO。研究了气固比(1.6～4.0 L/g) 、还原时间(50～300 s) 、H

-CO混合气体中CO的含量(20%～60%)和温度(500～700℃)对不锈钢粉尘还原的影响。正交试验结果表明

四个因素中气固比影响最为显著

其余依次为还原混合气体成分、还原时间和反应温度。气固比4.0 L/g

600～700℃

CO含量15%～25%

5 min内不锈钢粉尘的还原率可达50%。

Abstract

Main analysis of stainless-steel dust with intermediate size 1. 78μm is (% ：) 41.0Fe

3.3Ni

24.80

2. 6Cr

4.1Ca

3. 6Zn

of which the main mineralogy is Fe

FeO • Cr

and CrO. The effect of gas-solid ratio (1.6- 4. 0 L/g)

reduction time (50 ~300 s)

CO fraction in H

-CO mix gas (20% ~60%) and temperature (500 〜700 ℃) on reduction rate of stainless-steel oxides has been studied. Orthogonal test results show that the gas-solid ratio has most obvious effect in four factors

following in sequence being reduction mix gas ingredient

reduction time and reaction temperature. The reduction rate of stainless-steel dust is up to 50% in 5 min with gas-solid ration 4. 0 L/g

CO fraction 15% - 25% at 600 - 700℃.

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