Experimental study on the fluidization quality of hot carbonized slag beds under slurry injection

YUE Dong; WANG Jianxin; WEN Liangying; LIU Bo; YANG Yangjun

doi:10.7513/j.issn.1004-7638.2026.03.004

Volume 47 Issue 3

Jun. 2026

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YUE Dong, WANG Jianxin, WEN Liangying, LIU Bo, YANG Yangjun. Experimental study on the fluidization quality of hot carbonized slag beds under slurry injection[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 31-38, 83. doi: 10.7513/j.issn.1004-7638.2026.03.004

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YUE Dong, WANG Jianxin, WEN Liangying, LIU Bo, YANG Yangjun. Experimental study on the fluidization quality of hot carbonized slag beds under slurry injection[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 31-38, 83. doi: 10.7513/j.issn.1004-7638.2026.03.004

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Experimental study on the fluidization quality of hot carbonized slag beds under slurry injection

doi: 10.7513/j.issn.1004-7638.2026.03.004

YUE Dong^1
,,
WANG Jianxin^{1, 2},
WEN Liangying^{1
,
,},
LIU Bo¹,
YANG Yangjun²

1.
School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2.
Sichuan Provincial Key Laboratory of High-Value Utilization of Vanadium and Titanium Resources. Pangang Group Panzhihua Iron and Steel Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China

More Information

Received Date: 2026-03-10
Accepted Date: 2026-04-07
Rev Recd Date: 2026-04-01
Publish Date: 2026-06-29

Abstract

Abstract

A thermal simulation test system was established for the purpose of investigating the actual return slurry conditions in a fluidized chlorination furnace for hot carbonized slag containing titanium carbide. The limit of liquid phase entering the fluidized bed layer of carbonized slag, the correlation between the actual amount of liquid phase entering the bed layer after superheated evaporation and the amount of liquid added were studied. In depth analysis was conducted on the aggregation and dispersion behavior of carbonized slag particles in the fluidized bed with liquid phase intervention, as well as the changes in fluidization quality indicators. The results indicate that when liquid phase is introduced into a carbonized slag fluidized bed with relatively stable pressure pulsations, the liquid bridges solid particles, causing them to agglomerate and leading to a sharp increase in bed pressure drop. In instances where the quantity of liquid phase introduced into the carbonized slag fluidized bed is comparatively minor (with a liquid-to-solid ratio of less than 0.005), the agglomerated particles can undergo disaggregation and dispersion as a consequence of the mixing and shearing action of the fluidizing gas and the liquid absorption by the solid phase. This process serves to restore the bed pressure drop to the gas-solid fluidization state, obviating the necessity for liquid phase introduction. Conversely, as the liquid-solid ratio increases to between 0.03 and 0.10, the fluidization quality index remains relatively stable, whilst the standard deviation of bed pressure drop pulsations decreases significantly, indicating enhanced fluidization quality stability in the carbonized slag bed. In conjunction with online thermogravimetric tracking, it was ascertained that under the test conditions of this study, the amount of liquid entering the carbonized slag fluidized bed exhibits a satisfactory linear correlation with the amount of liquid added.
- hot carbonized slag,
- slurry injection,
- solid-phase aggregation and disaggregation,
- liquid-phase evaporation,
- fluidization quality

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References(23)

References

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