DEVICE FOR HEATING OF HEARTHS OF SINTERING AND ROASTING MACHINES Russian patent published in 1998 - IPC

FIELD: electrometallurgy. SUBSTANCE: the device uses a burner opening, air feeder casing with a vane swirler, central gas pipe and an annular air duct between the swirler and gas pipe. The annular duct outlets are located in the end face wall facing the burner opening, they converge in such a way that the axis of each of them is positioned at an angle of 30 to 60 deg. to the plane passing through the center of the outlet section of this outlet and the device axis, and at an angle of 30 to 60 deg. to the plane perpendicular to the device axis. EFFECT: improved design. 3 dwg