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:
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
3
O
4
FeO • Cr
2
O
3
and CrO. The effect of gas-solid ratio (1.6- 4. 0 L/g)
reduction time (50 ~300 s)
CO fraction in H
2
-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