Tuyere for blowing gases into molten metal bath container
AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsMinoru Kitamura, Shinji Koyama, Shuzo Ito, Masahiko Ohgami, Hideo Matsui, Isamu Hirose, Hideaki Fujimoto, Tsuyoshi Yasui
Life of this patent
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Abstract
A blowing tuyere to be embedded in a bottom of side wall of a molten metal bath container for blowing a gas thereinto, the tuyere including a cylindrical core body fixedly located at the center of the tuyere and an outer tube fixed concentrically around the core body with a gap of a predetermined width to form an annular blowing passage therebetween.
Claims8
A tuyere having a longitudinal axis, said tuyere for blowing a gas therethrough to be embedded in a bottom or side wall of a molten metal bath container, said tuyere comprising:
- a cylindrical core body which further comprises a solid refractory material having a first outer diameter and located at the center of said tuyere coaxially with respect to said longitudinal axis;
- a first tube having a second outer diameter and fixed coaxially around and immediately adjacent said core body and forming a first continuous annular gap having a first width forming a first annular blowing passage;
- means for reducing erosion of said wall of said molten metal bath container adjacent said tuyere;
- and
- means for stabilizing a flow rate of said gas through said tuyere over a wide range of said flow rate.
Dependencies are inferred from the claim text.