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针对攀钢现行工艺下发生的RH浸渍管粘渣的问题,通过实验及理论计算研究了RH浸渍管的粘渣原因及其对策。对RH浸渍管粘渣物的物相分析结果表明,RH精炼过程中高熔点的镁铝尖晶石相在熔渣中析出是导致RH浸渍管粘渣的根本原因;精炼渣组成对浸渍管粘渣影响的研究表明,提高精炼渣的碱度、增大渣中CaO/Al2O3含量比、降低渣中MgO含量,可以降低渣中高熔点相的作用浓度,改善了熔渣粘度和熔点,有利于减轻RH浸渍管的粘渣。
Aiming at the problem of RH dip tube sticky slag existing in the current process of Panzhihua Iron and Steel (Group) Co., Ltd., the reason and countermeasure of sticking slag in RH dip tube were studied through experiments and theoretical calculations. The phase analysis results of the RH dip tube sticky slag showed that the high melting point magnesia-alumina spinel phase precipitated in the slag during RH refining was the root cause of the RH dip sticky slag. The results show that increasing the basicity of refining slag, increasing the content of CaO / Al2O3 in the slag and reducing the content of MgO in the slag can reduce the concentration of high-melting phase in the slag, improve the viscosity and melting point of the slag, and reduce the RH Dipping pipe sticky slag.