Water Model Study on Removing Inclusions in a Ladle With Argon Injected Through

Acta Metall Sin

2006, Vol. 42

Issue (11): 1143-1148 DOI:

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Water Model Study on Removing Inclusions in a Ladle With Argon Injected Through

ZHENG Shuguo; ZHU Miaoyong

School of Materials and Metallurgy; Northeastern University; Shenyang 110004

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ZHENG Shuguo; ZHU Miaoyong. Water Model Study on Removing Inclusions in a Ladle With Argon Injected Through. Acta Metall Sin, 2006, 42(11): 1143-1148 .

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Abstract The removal efficiency of non-metallic inclusions from molten steel in gas-stirred ladles will directly affect the quality of steel product. In the present work, the effects of time and gas flowrate on inclusion removal in a ladle with eccentric bottom gas injected through nozzle and porous plug were investigated by choosing emulsion drops simulated as inclusions in a water model. The results show that most of the inclusions can be removed in eight minutes with smaller flowrates, while sixteen minutes needed with larger flowrates. All the inclusions which have the possibility to be removed almost disappeared from the system in twenty-eight minutes. With gas blowing through nozzle, there was a gas flowrate for the best of inclusions removal. With gas injected through porous plug, smaller gas flowrates seemed to be more efficient for inclusions removal. And within a range of gas flowrates, gas injected through porous plug seemed to be more efficient for inclusions removal than gas blowing through nozzle.

Key words: ladle eccentric bottom-blowing emulsion drop inclusions water modeling

Received: 17 March 2006

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