The structure and working principle of AOD furnace
In 1991, 75.6% of the world's total stainless steel production was produced by the AOD method (8 million tons of stainless steel). The proportion of using AOD refining technology at home and abroad is increasing. The type of AOD furnace is similar to that of LD converter. The supporting trunnion of the furnace body can be tilted at any angle. The AOD furnace is placed in a rotating support shaft ring connected with the tilting shaft. The container can rotate forward 180° at a variable speed and 80° backward. AOD equipment mainly consists of furnace body, trunnion ring, tilting mechanism, gas mixing feeding system, temperature measurement and sampling system. The AOD furnace is lined with refractory materials such as magnesia and chromium, and the lower part is designed as a cone with an inclination angle of 20°. The purpose is to make the incoming gas rise away from the furnace wall to avoid erosion of the upper furnace wall of the tuyere. There are 2 or more ...