Due to the long-term operation of the casting furnace, it cannot be cleaned in time, resulting in the accumulation of a large amount of slag blocks around the furnace walls and at the bottom of the furnace. This reduces the amount of aluminum melted, invisibly lowers the efficie ncy of the furnace, and increases the smelting cost. The new type of furnace cleaning flux reduces the labor intensity of workers without damaging the furnace wall.workers and does not damage the furnace wall.