Title: Device for injecting divided solid materials in a furnace such as a smelting blast furnace, and applications
Application Number: 86103851 Application Date: 1986.05.05
Publication Number: 1006297 Publication Date: 1986.12.31
Approval Pub. Date: 1990.03.14 Granted Pub. Date: 1990.03.14
International Classifi-cation: C21B5/00;C21B7/16
Applicant(s) Name: Inst. de Recherches de la Siderurgu Francaise Address:
Inventor(s) Name: Hugues Zanetta;Yann De Lassat De Pressigny
Attorney & Agent: XIN ZHESHENG
Abstract:
    The tuyere comprises a substantially cylindrical or slightly convergent frusto-conical downstream part, and a divergent frusto-conical upstream part; the plasma torch is placed co-axially to the tuyere at the inlet to the upstream part thereof; the solid materials injection nozzle issues at an angle into the upstream part of the tuyere and the angle of taper of the upstream part of the tuyere substantially corresponds to the angle of natural expansion of the plasma jet, so that said materials are carried with the plasma jet and that part of them are provided onto the inner wall of the tuyere.
Time: 6