Carbonation of stainless steel slag in the context of in situ Brownfield remediation

2014 ◽  
Vol 59 ◽  
pp. 91-100 ◽  
Author(s):  
Oriana Capobianco ◽  
Giulia Costa ◽  
Laurens Thuy ◽  
Elisa Magliocco ◽  
Niels Hartog ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Slag ◽  
Stainless Steel Slag

Corrigendum to “Carbonation of stainless steel slag in the context of in situ Brownfield remediation” [Minerals Eng. 59 (2014) 91–100]

2014 ◽  
Vol 69 ◽  
pp. 223
Author(s):  
Oriana Capobianco ◽  
Giulia Costa ◽  
Laurens Thuy ◽  
Elisa Magliocco ◽  
Niels Hartog ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Slag ◽  
Stainless Steel Slag

scholarly journals Experimental Study on Precipitation Behavior of Spinels in Stainless Steel-Making Slag under Heating Treatment

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 487 ◽  
Author(s):  
Jianli Li ◽  
Qiqiang Mou ◽  
Qiang Zeng ◽  
Yue Yu
Keyword(s):  
Particle Size ◽  
Stainless Steel ◽  
Steel Slag ◽  
Calcium Content ◽  
Heating Time ◽  
X Ray Diffraction ◽  
Stainless Steel Slag ◽  
Steel Making ◽  
Heating Treatment ◽  
The Stability

The stability of chromium in stainless steel slag has a positive correlation with spinel particle size and a negative correlation with the calcium content of the spinel. The effect of heating time on the precipitation of spinel crystals in the CaO-SiO2-MgO-Al2O3-Cr2O3-FeO system was investigated in the laboratory. Scanning electron microscopy with energy-dispersive and X-ray diffraction were adopted to observe the microstructure, test the chemical composition, and determine the mineral phases of synthetic slags, and FactSage7.1 was applied to calculate the crystallization process of the molten slag. The results showed that the particle size of the spinel crystals increased from 9.42 to 10.73 μm, the calcium content in the spinel crystals decreased from 1.38 at% to 0.78 at%, and the content of chromium in the spinel crystal increased from 16.55 at% to 22.78 at% with an increase in the heating time from 0 min to 120 min at 1450 °C. Furthermore, the species of spinel minerals remained constant. Therefore, an extension in the heating time is beneficial for improving the stability of chromium in stainless steel slag.

Stabilization of Stainless Steel Slag via Air Granulation

2019 ◽  
Vol 5 (2) ◽  
pp. 157-171 ◽  
Author(s):  
Mikael Lindvall ◽  
Lily Lai Chi So ◽  
Mahdi Mahdi ◽  
Janice Bolen ◽  
Johannes Nell ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Slag ◽  
Stainless Steel Slag

Crystallization mechanism of glass-ceramics prepared from stainless steel slag

Rare Metals ◽  
2018 ◽  
Vol 37 (5) ◽  
pp. 413-420 ◽  
Author(s):  
Wen-Di Fan ◽  
Qiang-Wei Yang ◽  
Bin Guo ◽  
Bo Liu ◽  
Shen-Gen Zhang
Keyword(s):  
Stainless Steel ◽  
Steel Slag ◽  
Glass Ceramics ◽  
Crystallization Mechanism ◽  
Stainless Steel Slag

scholarly journals Effects of Fe2O3 on Reduction Process of Cr-Containing Solid Waste Self-Reduction Briquette and Relevant Mechanism

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 51 ◽  
Author(s):  
Tuo Wu ◽  
Yanling Zhang ◽  
Zheng Zhao ◽  
Fang Yuan
Keyword(s):  
Solid Waste ◽  
Steel Slag ◽  
Reduction Process ◽  
Rapid Separation ◽  
Stainless Steel Slag ◽  
Chrome Oxide ◽  
Efficient Recovery ◽  
Lower Temperature ◽  
Quench Method

High-temperature quench method, scanning electron microscope-energy dispersive spectroscopy (SEM-EDS), and thermodynamic analysis were adopted to study the effects of Fe2O3 on reduction process of Cr-containing solid waste self-reduction briquette (Cr-RB). Moreover, the relevant mechanism was also studied. The results clearly showed that the addition of Fe2O3 decreased the chromium-iron ratio (Cr/(Fe + Cr)) of Cr-RB itself and promoted the reduction of chrome oxide in the Cr-containing solid wastes such as stainless steel slag and dust. A large number of Fe-C alloy droplets generated in the lower temperature could decrease the activity of reduced chromium by in situ dissolution and the reduction of Cr-oxide was accelerated. Rapid separation of metal and slag could be achieved at a relatively lower temperature, which was very beneficial to the efficient recovery of Cr. Finally, the corresponding mechanism diagram was presented.

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