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首页> 外文期刊>ISIJ international >Measurement and Calculation of Nitrogen Removal Rate from Molten Iron to Gas Phase through CaO-Al_2o_3 Melts
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Measurement and Calculation of Nitrogen Removal Rate from Molten Iron to Gas Phase through CaO-Al_2o_3 Melts

机译：CaO-Al_2o_3熔体从铁水到气相脱氮率的测量与计算

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摘要

There is a limit for lowering nitrogen in steel because of pickup from atmosphere during and after degassing. Therefore, nitride capacity of various fluxes has been measured in order to examine the possiblility of nitrogen removal by using slag. It is necessary to take into account the nitrogen reaction rate between gas and slag phases by using slag. It is necessary to take into account the nitrogen reaction rate between gas for the efficient removal of nitrogen in practical steelmaking process. In this study, nitrogen removal rate from molten iron-aluminum alloy to gas phase through CaO-Al_2O_3 melts has been examined and a mixed rate determining model has been applied through successive phases of metal, slag, an gas taking gas/slag reaction rate into consideration. For the effective removal of nitrogen from metal to gas phase through CaO-Al_2O_3 melts, it is important to keep oxygen pressure in the gas phase higher and oxygen potential at slag/metal interface lower.
机译：由于在脱气期间和脱气后会从大气中吸收氮，因此降低钢中的氮含量是有限制的。因此，已经测量了各种助熔剂的氮化物容量，以便检查通过使用炉渣除去氮的可能性。有必要通过使用炉渣来考虑气相和炉渣相之间的氮气反应速率。在实际的炼钢过程中，必须考虑气体之间的氮反应速率，以有效地去除氮。在这项研究中，研究了通过CaO-Al_2O_3熔体从铁铝铝合金到气相的脱氮率，并应用了混合速率确定模型，对金属，炉渣，将气/渣反应速率转化为考虑。为了通过CaO-Al_2O_3熔体将金属中的氮有效地去除，重要的是要保持气相中的氧气压力较高，而炉渣/金属界面处的氧气电位较低。

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