Among the main energy-consuming equipment in the factory, the special solid melting furnace for mobile phones is undoubtedly the largest energy consumption in the aluminum processing industry. For example, in the foundry branch, the heavy oil consumption of the regenerative mobile phone special solid melting furnace accounts for about 50% of the total production energy consumption. Insufficient combustion, black smoke, energy waste and environmental pollution, the burning of heavy oil in the regenerative mobile phone special solid melting furnace and the direct emission of a large amount of high-temperature flue gas produced at the same time lead to low thermal efficiency in the aluminum melting furnace. Usually it is about 15%-20%. Therefore, it is an important aspect to reduce the energy consumption of the aluminum furnace, improve the environment, and recycle the high-temperature flue gas of the aluminum furnace.

The smelting process of the regenerative mobile phone special solid melting furnace can be roughly divided into four stages, that is, the charging material is softened, the bed is softened until the furnace is flat, and the furnace is melted to complete melting. (Oxidation scum is generated at this stage), and the molten aluminum is heated. The heating of aluminum material is achieved by convective heat transfer from the burner flame, radiant heat transfer from the flame and furnace wall, and conductive heat transfer between aluminum materials.

Although the high-temperature waste heat recovery of the special solid melting furnace for mobile phones has been actively implemented in China, this is the more troublesome technical difficulty for the relevant personnel of the aluminum melting furnace. In the production process of the special solid melting furnace for mobile phones, some salt covering agents need to be added, but at the same time, the presence of salt is extremely corrosive to metal equipment, and general metal heat exchangers will burn out after three months. Secondly, the soot center contains technical impurities of aluminum powder, and its viscosity is very strong, so it is not suitable to be removed, especially the tube heat exchanger is easy to be blocked by soot, which leads to its ineffectiveness. Regenerative mobile phone special solid melting furnace as a traditional equipment, its work site is generally narrow, not suitable for installing large heat exchangers.

The waste heat recovery system of the mobile phone special solid melting furnace, therefore, to solve the anti-corrosion, smoke and dust blockage, a large number of heat exchanger equipment, and to ensure its heat transfer efficiency is the current high-temperature flue gas recovery and heat storage type mobile phone special solid melting furnace reuse To the question.