Optimization of CAS Process by Physical Model Study
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摘要: 为了优化230 tCAS过程工艺,建立了1:4的物理模型进行模拟研究,通过混匀时间测试,优化了底吹位置、吹气量和浸渍罩浸入深度;通过排渣试验确定了合理的排渣气量。研究结果表明:优化的透气砖位置为8#方案(1#透气砖距包底中心600 mm,2#透气砖距包底中心1 000 mm,两透气砖所在半径的夹角为100°);CAS混匀过程的最佳吹气量应控制在600~700 NL/min;浸渍罩下罩深度控制在200 mm左右;渣层厚度为80、120、160 mm时对应的排渣气量分别控制在600、800、1 000 NL/min以上。Abstract: In order to optimize the process of a 230 t CAS ladle,a physical model has been built with a scale factor of 1:4.Location of bottom lowing,gas flow rate and depth of the snorkel have been optimized by mixing time test,and the appropriate gas flow rate for deslagging has been determined in deslagging experiment.The results show that position of plugs for better mixing can be seen in scheme 8(plug 1 and 2 are 600 mm and 1 000 mm from the center of ladle bottom respectively and the intersection angel between these two plugs is 100°);the optimum gas flow rate for mixing should be 600~700 NL/min;the depth of snorkel is about 200 mm for better mixing.Where the thickness of slag layer is 80,120,160 mm,the gas flow rate for deslagging should be more than 600,800,1 000 NL/min respectively.
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Key words:
- CAS /
- plug location /
- mixing time /
- deslagging
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