Explanation

In the method of steelmaking with electric energy as the heat source, the main raw material for electric steelmaking is scrap. Since most of the steel products can be recycled, the amount of scrap available will increase rapidly when the steel output reaches the peak, and electric steelmaking steelmaking will gradually become the main way of steel production. At present, the output of electric furnace steel in the world has reached about 40% of the total output of steel, and more than half in developed countries. More than 95% of the world's electric steelmaking output is produced by electric arc furnace, so electric steelmaking usually refers to electric arc furnace steelmaking. The process flow of electric steelmaking includes charging, melting, oxidation, reduction and tapping. At present, advanced processes such as scrap preheating, melting oxygen combination, LF refining and reduction are mostly used, which can significantly shorten the production cycle and improve production efficiency. Modern electric steelmaking steelmaking often combines electric arc furnace with off furnace refining equipment and continuous casting production line to form a production mode of rough refining refining continuous casting. Since electric steelmaking does not require ironmaking process, it can adopt short process production, with less investment, low energy consumption per ton of steel and high labor productivity. The smelting cycle of electric steelmaking steelmaking is 70 lOOmim, and the maximum capacity can reach 400t. At present, the mainstream furnace type is 100-300t.

Classification