Electrolyte supplement system in aluminium electrolysis process and method for preparing the same

摘要

The disclosure provides an electrolyte supplement system in an aluminium electrolysis process, which includes low-molecular-ratio cryolite, wherein the low-molecular-ratio cryolite is selected from mKF·AlF 3 , nNaF·AlF 3 or mixture thereof, where m=1ˆ¼1.5 and n=1ˆ¼1.5. When the electrolyte supplement system provided by the disclosure is applied to the aluminium electrolytic industry, electrolytic temperature can be reduced obviously in the aluminium electrolysis process without changing the existing electrolytic process; thus, power consumption is reduced, volatilization loss of fluoride is reduced and the comprehensive cost of production is reduced.