Application of dry vacuum pump system in 100t VD refining furnace at Baotousteel

To reduce energy consumption of steel making process,the vacuum degassing equipment of 100 t VD refining furnace in the steelmaking plant of Batousteel was revamped and the dry vacuum pump system was introduced.The key component,the process structure,the technical advantages and the using effect of the system were discussed.The main energy consumption of the dry vacuum pump system was calculated.Compared with the traditional steam pump,the energy consumption of dry vacuum pump system was only 10 % of the steam pump.After adopting dry vacuum pump system in the steelmaking plant,the deep vacuum state(100Pa)was reached within 4minutes and w(H)in steel was less than 1.5×10^-6.