Effect of steel works 210 t RH refining treatment time

driving gas flow rate

vacuum

number of stomata and immersion depth on inclusion removal and the effect of bottom-blowing pattern and gas flow rate on amount of slag entrapment have been studied by using geometric similarity ratio 1：4 water model. Simulation test results show that the inclusions in liquid decrease by ~90% as treatment for 24 min and at vacuum chamber descending the short-term bottom argon blowing by double porous brick is obviously available to decrease the amount of slag entrapment in liquid. It is obtained that suitable process parameters for 210 t RH refining are driving gas flow rate- 164. 2 m

3

/h

8 stomata

immersion depth- 500 mm

absolute pressure in vacuum chamber- 4 000 Pa and double porous brick total argon blowing flow rate- 90 m

3

/h.