Discussion on the relationship between formula design and typical properties of prebaked anode
Excellent prebaked anodes need to have good mechanical,thermal and electrical properties.In view of the status quo that the relationship between electrolytic excessive consumption of active prebaked anodes and their internal structure has not been clarified,this paper based on the classic formula of aluminum prebaked anodes,relying on the maximum aggregate accumulation theory and G/S theory can improve the green density and reduce the green cracks.The pre-baked anode sample was prepared by die pressing process.The relationship between the structure and physical properties of prebaked anode materials and its products was studied by means of SEM,CO2 reaction tester and air reaction tester.The results show that the pre-baked anode material which can meet the requirement of low consumption index of electrolytic cell can be prepared by using intelligent formula to design the optimal ratio of selected material and the corresponding binder dosage.The optimal control ratio of 9-6mm accounted for 8wt％,6-3mm accounted for 22wt％,3-1mm accounted for 28wt％,1-0.076mm accounted for 24wt％,powder accounted for 18wt％.In the case of a certain amount of asphalt,the formula design optimizes the proportion of core particles to achieve the correlation balance among the three indexes of the pre-baked anode material resistivity,mechanical strength and thermal shock resistance,which can reduce the anode consumption in the electrolytic cell.
NETL
NSTL
万方数据
