Submersed nozzle roasting jacket

The utility model discloses a submersed nozzle roasting jacket in the field of continuous casting equipment so as to solve the current problems of uneven heating, slow temperature rising, coal gas wasting, and bad baking effect of neck of the submersed nozzle caused by adopting an asbestine blanket to coat the two sides of the submersed nozzle and roast. The submersed nozzle roasting jacket is formed by an insulating material the shape of which is matched with the shape of the submersed nozzle, which can coat the submersed nozzle; one side of the lower part of the jacket is provided with a flame inlet; the neck part of the jacket is provided with a flame outlet; and the clearance between each side of the jacket and the submersed nozzle is 5-50mm. After the submersed nozzle roasting jacket is put into application, the roasting effect is good, which can save coal gas consumption by about 50 percent. The successful spruing rate is 100 percent from November 2009 till now. The submersed nozzle roasting jacket redu