（1. Metallurgical Technology Research Department， Central Iron and Steel Research Institute， Beijing 100081， China 2. Administration Office， China Iron and Steel Research Institute Group， Beijing 100081， China 3. Resource Application and Alloy Materials Business Department， New Metallurgy Hi-Tech Co.， Ltd.， Beijing 100081， China）
Abstract：In order to explore the feasibility of dephosphorization by the free swing lance injecting limestone powder， a cold model of the free swing lance injecting limestone powder to dephosphorization system was established to investigate the effect of the Mach number of nozzle， the nozzle’s angle， the lance height， the feeding speed and the particle size of injection system on the transmission dynamics condition in the melt bath. The water， the polymethylmethacry late particle， the vacuum-pump oil and the compressed air were used to simulate the hot metal， the limestone powder， the slag and the oxygen respectively. The results showed that the Laval nozzle could be used to inject limestone powder， but the Mach number of the nozzle should not be too large. The optimal Mach number was 1.8. The transmission dynamics condition in the melt bath became better with the increasing of the nozzle’s angle， but the particle penetration ratio would increase and the splash would decrease sharply if the nozzle’s angle was too large. The optimum parameters of the nozzle’s angle， the lance height， the feeding speed and the particle size were 25°，200 mm，1.8 kg/min and 0.164 mm respectively.
收稿日期: 2018-04-19
出版日期: 2019-02-22
引用本文:
张 波，吴 巍，吴 伟，王天明，罗林根，王雨晗. 自摆动喷枪喷吹石灰石粉脱磷的水模拟[J]. , 2019, 54(1): 28-32.
ZHANG Bo，WU Wei，WU Wei，WANG Tian-ming，LUO Lin-gen，WANG Yu-han. Water model of freely swing lance injecting limestone powder to dephosphorization. Iron and Steel, 2019, 54(1): 28-32.
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2019, Vol. 54 
