Method for smelting ferrochrome in serpentine-added submerged arc furnace

The invention discloses a method for smelting ferrochrome in a serpentine-added submerged arc furnace. The method comprises the following steps that (1) chromite powder is placed into a ball mill forball milling, and bentonite and water are added in the ball milling process to prepare a wet material, and the wet material is conveyed to a pelletizer through a belt for pelletizing; (2) water-containing pellets are conveyed to a shaft furnace to be roasted, and dry pellets are prepared, wherein the particle size of the dry pellets is 1-2cm; (3) the pellets, coke, serpentine and return slag are mixed and then placed into the submerged arc furnace for smelting; (4) molten iron obtained after smelting is cast into a mold, and tundish slag is collected and placed into the submerged arc furnace again in the casting process; (5) an alloy obtained after casting is crushed; and (6) the crushed alloy is subjected to finishing, and then smelting of the ferrochrome alloy is completed. According tothe method, the serpentine