Reduction Experiment of Stainless Steel Dust Based on Hot Briquetting

doi:10.12068/j.issn.1005-3026.2016.04.008

Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (4): 490-495.DOI: 10.12068/j.issn.1005-3026.2016.04.008

• Materials & Metallurgy • Previous Articles Next Articles

Reduction Experiment of Stainless Steel Dust Based on Hot Briquetting

RI Sok-chol^{1, 2}， CHU Man-sheng¹， LI Hua-bing¹， RA Ju-hyon²

1. School of Metallurgy， Northeastern University， Shenyang 110819， China; 2. School of Metallurgical Engineering， Kim Chaek University of Technology， Pyongyang 999093， DPRK.

Received:2015-09-28 Revised:2015-09-28 Online:2016-04-15 Published:2016-04-05
Contact: CHU Man-sheng
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Abstract

Abstract: To efficiently recycle valuable metal such as Fe， Cr and Ni in stainless steel dust， the preparation and self-reduction of coal composite stainless steel dust hot briquette(CCSB) were researched. Under 200℃ hot briquetting temperature， 35MPa hot briquetting pressure， the compressive strength was above 900N/P. Volatile matter of coal pyrolysis could take part in reduction of stainless steel dust under high temperature， and reduction action rate of volatile matter was 0.4 at 1400 or 1450℃. XRD analysis and thermodynamic calculation results showed that product containing chromium is appeared as FeCr₂O₄， Cr₂O₃， Cr₇C₃，［Cr］_Fe-Cr-Ni-C in turn in the self-reduction process. Under 1450℃ reduction temperature， CCSB with 0.72 of x_○c/x_○o can not completely be reduced， but CCSB with 0.8 of x_○c/x_○o or more can completely be reduced under 1450℃， 20min.

Key words: stainless steel dust, hot briquette, self-reduction, volatile matter；chromium

CLC Number:

TF554

RI Sok-chol ， CHU Man-sheng， LI Hua-bing， RA Ju-hyon. Reduction Experiment of Stainless Steel Dust Based on Hot Briquetting[J]. Journal of Northeastern University Natural Science, 2016, 37(4): 490-495.

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Reduction Experiment of Stainless Steel Dust Based on Hot Briquetting

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