A new type of optimized riser structure was proposed, in which a low-emissivity board B12 Vitamins / Methylcobalamine was inserted into the hollow interlayer of the material to increase the yield of the steel ingot.The insulation effect of different riser heights on the solidification process of steel ingot is numerical simulated.The results show that Scissors when the riser height can be reduced from 350 mm to 300 mm, the ingot yield can be increased by 1,92 %.As the number of low-emissivity boards is increases, the riser insulation performance is also increased.