BLAST-FURNACE TUYERE Russian patent published in 2004 - IPC

FIELD: ferrous metallurgy; delivery of hot blast and gas to blast furnace hearth. SUBSTANCE: proposed tuyere has flange, mouth part, outer and inner sleeves forming cylindrical blast channel, gas supply branch pipes which form two gas channels; branch pipes are interconnected together and are connected with blast channel; they have holes of different areas and shapes. These channels are made from branch pipe and each channel is provided with its own valve. Channel made from branch pipes is fitted with check valve and is connected with channel by means of branch pipes between check valve and cock; before tuyere flange, channel of branch pipes is introduced into channel of branch pipes and is located in it concentrically, thus making it possible to introduce two gas channels into blast channel through one hole found in inner sleeve and in tuyere flange. EFFECT: improved quality of mixing gas and blast. 6 cl, 5 dwg, 1 tbl