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通过自制的模拟铜结晶器实验装置,模拟结晶器固态渣膜的形成过程,研究无氟渣膜形成过程中渣膜状态及热流密度的变化,并利用扫描电镜、X射线衍射仪研究了渣膜的微观结构及结晶矿物。结果表明,随着模拟铜结晶器实验装置浸入渣液时间的延长,结晶器壁渣膜呈逐渐增厚的趋势,晶体质渣膜的成长速度比玻璃质渣膜要快得多,且固态渣膜形成过程中结晶矿物种类不变;穿过固态渣膜的热流密度呈下降趋势,尤其在浸入渣液25 s内,热流密度的下降趋势更为显著;渣膜传热是固态渣膜中的气孔、结晶率和渣膜厚度三方面因素综合作用的结果。
The self-made simulated copper mold experiment device was used to simulate the formation process of solid state slag film. The changes of slag film state and heat flux during the formation of fluorine-free slag film were studied. The effects of slag film The microstructure and crystalline minerals. The results show that, with the extension of immersing slag liquid in the simulated copper mold experimental device, the mold wall slag film shows a gradual thickening tendency. The growth rate of the crystalline slag film is much faster than that of the glass slag film, and the solid slag In the process of film formation, the types of crystalline minerals remained unchanged. The heat flux density through the solid slag film showed a decreasing trend, especially in the 25s immersed in the slag solution. The heat flux density decreased more obviously. Porosity, the rate of crystallization and the thickness of the film three factors combined results.