Physical Simulation of BOF Limestone Particles Blowing via Top Lance

doi:10.12068/j.issn.1005-3026.2014.05.020

Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (5): 695-699.DOI: 10.12068/j.issn.1005-3026.2014.05.020

• Materials & Metallurgy • Previous Articles Next Articles

Physical Simulation of BOF Limestone Particles Blowing via Top Lance

TANG Biao^1,2， WANG Xiaoming^1,2， ZOU Zongshu^1,2， SUN Guangqi^1,2

1 School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China; 2. Key Laboratory of Ecological Utilization of Intergrown Ores， Ministry of Education， Northeastern University， Shenyang 010819， China.

Received:2013-07-25 Revised:2013-07-25 Online:2014-05-15 Published:2014-08-18
Contact: ZOU Zongshu
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Abstract

Abstract: A cold model of BOF limestone particles blowing via top lance was established to investigate the mixing time， powder distribution and penetration ratio in the melt bath. Water， saltcoated hollow alumina particles and vacuumpump oil were used to simulate liquid steel， limestone particles and slag， respectively. The effects of gas flow and the lance position on the mixing time were studied， and the optimum process in the test condition was determined. The penetration ration and the powder distribution were measured under the optimum processing condition. The results showed that the powder penetration ratio increases with the increase of solid/gas ratio and powder particle size. The lance position under the top blowing spray condition slightly lowers to the height of 258mm， botton blowing rate is 20m3/h.Under the laboratory condition， the powder particle size 0212~0380mm are suggested.

Key words: mixing time, powder penetration ratio, powder distribution, solid/gas ratio, powder particle size

CLC Number:

TF74821+5

TANG Biao， WANG Xiaoming， ZOU Zongshu， SUN Guangqi. Physical Simulation of BOF Limestone Particles Blowing via Top Lance[J]. Journal of Northeastern University Natural Science, 2014, 35(5): 695-699.

References

[1] Li H，Guo L F，Li Z Q，et al.Research of lowcarbon mode and limestone addition instead of lime in the BOF steelmaking［J］.Journal of Iron and Steel Research International，2010，17(sup2):23/27.
[2] Song W C，Li H，Guo L F，et al.Analysis on energysaving and CO2 emissions reduction in BOF steelmaking by substituting limestone for lime to slag［C］//2011 International Conference on Materials for Renewable Energy & Environment Proceedings.Shanghai:CES，2011:991/994.
[3] Guo L F，Li H，Li Z Q，et al.Discussion on the decomposition laws of limestone during converter steelmaking process by static decomposition model under constant temperature［J］.Advanced Materials Research，2011，233/234/235:2648/2653.
[4] Li H，Guo L F，Li Y Q，et al.Industrial experiments of using limestone instead of lime for slagging during LDsteelmaking process［J］.Advanced Materials Research，2011，233/234/235:2644/2647.
[5] Li Y Q，Li H，Guo L F，et al.The influence of decomposition and slagging of limestone to temperature in convertor［J］.Advanced Materials Research，2012，490/491/492/493/494/495:3836/3839.
[6] 魏宝森.石灰石在转炉炼钢中的应用实践［J］.冶金能源，2012，31(4):10/12.(Wei Baosen.Limestone in converter steelmaking practice［J］.Energy for Metallurgical Industry，2012，31(4):10/12.)
[7] Stiovic T，Kock K.Bottom blowing investigations on a cold model reactor to optimise mixing behaviour in metallurgical process［J］.Steel Research International，2002，73(9):373/377.
[8] Christian R，Michael P.Cold model investigations into the effects of bottom blowing in metallurgical reactors［J］.Steel Research International，1995，66(8):325/328.
[9] Fabritius T M，Luomala M J，Virtanen E O.Effect of bottom nozzle arrangement on splashing and spitting in combined blowing convertor［J］.ISIJ International，2002，42(8):861/867.

Physical Simulation of BOF Limestone Particles Blowing via Top Lance

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