Potassium fluoaluminate (potassium cryolite) is an important material for the development of low temperature electrolyte

An important task facing the aluminum industry today is to develop new technologies and processes to achieve energy conservation, consumption reduction and emission reduction.
Low temperature electrolysis has the advantages of low energy consumption, low heat loss and low power consumption. It is the future development direction of aluminum industry.
New type of low temperature electrolytic process in addition to the need to apply the new anode and cathode, need low temperature electrolyte with use, so development of low temperature electrolyte is one of the necessary conditions to realize low temperature aluminum electrolysis process.
The low temperature electrolyte system includes the traditional sodium cryolite, lithium ice crystal and potassium cryolite electrolyte system, and the current research on the low temperature electrolyte mainly focuses on the NaF, AlF3 system.
Lithium sodium cryolite electrolyte systems can lead to lower temperature is the biggest defect of the sharp decline in alumina solubility, and the solubility of alumina is extremely important for industrial electrolysis.
To solve this problem, puts forward the concept of suspension electrolysis but the implementation of this method still exists a lot of technological difficulties, because to realize suspension electrolysis in industry need to special design to keep cell suspension of alumina in electrolyte.
Therefore, it is of great significance to find a new low temperature electrolyte system with high alumina solubility for low temperature aluminum electrolysis process.

The potassium cryolite system has the advantages of high solubility of Al2O3 and low crystal temperature. It is a low temperature electrolyte with potential application potential.