Knotting method of casting ingot mold in preparation process of vanadium-iron alloy

The invention discloses a knotting method of a casting ingot mold in the preparation process of a vanadium-iron alloy, and belongs to the field of metallurgy. The knotting method of the casting ingot mold comprises the following steps of using magnesite and magnesium fire clay with the granularity intervals of 0 to 5mm and 5 to 10mm as knotting main materials; using vanadium-iron smelting corundum slag with the granularity interval of 0 to 10mm as knotting auxiliary materials; mixing the knotting main materials and the knotting auxiliary materials with brine to obtain a knotting mixed material; and performing inner-outer layer knotting on the knotting mixed material according to the proportion requirement. According to the method, the loss amount of vanadium in the vanadium-iron casting process is reduced, and the vanadium-iron smelting corundum slag can be recycled. According to the ingot mold knotted by the method, the permeation thickness of the vanadium-iron alloy is as low as 17.6mm, the vanadium loss in