... . low energy consumption, high temperature gas in the last row of vertical furnace process is the full absorption of ... aluminum Burning along the tangent direction of the end of furnace, furnace gas circulation strong and evenly distributed. 4, melting faster ... to operate, no dead slag.7, furnace length, ≥ 4 years of hearth furnace, shaft furnace ≥ 2 yearsWelcome your inquiry. gas fired heat treatment ...