In the furnace heated by flame, electric aid is to directly send electric energy into the liquid glass heated by fuel with the help of electrodes to supplement the heat required for melting. In large furnaces, its melting capacity cannot be infinitely improved. When it is critical to the discharge rate, it is easy to produce defects such as bubbles and lines in the products. If electric auxiliary heating is applied to the proper part of the melting tank, the electric energy can be fed into the liquid glass with 100% efficiency, improving the melting capacity of the furnace, so as to increase the production capacity of the tank without expanding the tank area. In addition, due to the input of electric energy into the liquid glass, the convection of the liquid glass is strengthened, the clarification and homogenization effect of the liquid glass is improved, and high-quality glass products can be obtained. Therefore, the electric melting technology has been widely used in large furnaces as an economic method to increase the discharge.
