绿色矿冶

This paper introduced the characteristics of industrial silicon smelting flue gas, the development of silicon smelting fume hood and the structure of the mainstream low smoke hood. From the geometric size design and flue gas pressure control of the low smoke hood, and the closed furnace cover, the technical feasibility of flue gas reduction was analyzed. It was pointed out that reducing the emission of silicon smelting flue gas can not be realized only by adjusting the operation of the smoke hood. It was necessary to improve the smelting process and the level of production automation， and apply new materials.