The causes of the problems existing in the use of RH vacuum tank refractories at Tangsteel,such as pulverization of the bricks in vacuum tank,castable shedding from immersion tubes,ring seam and concave resistance of alloy material inlet,are analyzed.Concrete measures are worked out to solve the problems,such as maintenance and improvement of steel liners and refractories for the immersion tubes,ring bricks,preheating and cooling of the vacuum tank.The average service life of RH immersion tubes in Tangsteel is prolonged from 64.2 heats to 105.4 heats.
NETL
NSTL
万方数据
