Study on wear mechanism at the front end of tuyere small sleeve in blast furnace
In order to reduce the wear at the front end of tuyere small sleeve collided with the moving coke in blast furnace,the coupling model of the discrete element model (DEM) and computational fluid dynamics (CFD) was used to research the motion behavior of coke in front of the tuyere.Then,according to the obtained velocity vector fields of coke particles,the physical wear mechanism at the front end was analyzed.The results showed that the wear was not serious when the front end was in the area near blast furnace wall where the moving speed of coke particles was smaller,but the shorter length of small sleeve would make the air flow at the center of blast furnace not filled.When in the area away from the blast furnace wall,the wear was serious,which was caused by fast moving,bigger sizes and more amount of coke particles.Although the moving speed of coke particles was fast yet in the area farthest away from the blast furnace wall,its direction was tangent to the front end and the size of coke particles was small,so that the wear was small.
NETL
NSTL
万方数据
