The paper illustrates the results of experimental study on the formation of the solid phase on the graphite crucible wall in the cryolite-alumina electrolyte depending on the temperature, rates of the liquid phase motion and heat flow in the laboratory electrolytic cell. The side ledge stability is shown to depend on the rate of the heat flow, which is caused by changes in the temperatures of the electrolyte, electrolytic cell walls and liquidus. When the temperature of the inside wall is higher than the electrolyte liquidus temperature the side ledge does not form, but in the case when it is lower than the liquidus temperature the side ledge formation proceeds until the temperatures equalize. As the electrolyte motion rate increases the thickness of the bottom ledge exceeds the thickness of the side ledge. The changes in the heat resistance of the electrolytic cell walls have a significant influence on the crust growth over the electrolyte and have less influence on the thickness of the bottom and side ledges.

本文说明了冰晶石-氧化铝电解质中石墨坩埚壁上固相形成的实验研究结果，具体取决于温度，液相运动速率和实验室电解池中的热流。所示的侧凸缘稳定性取决于热流速率，该热流速率是由电解质，电解池壁和液相线温度的变化引起的。当内壁的温度高于电解质液相线温度时，不形成侧凸缘，但是当内壁的温度低于液相线温度时，侧凸缘的形成一直进行到温度相等为止。随着电解质运动速率的增加，底部凸缘的厚度超过侧面凸缘的厚度。