Title: Tuyere of blast furnace
Application Number: 88100068 Application Date: 1988.01.09
Publication Number: 1020359 Publication Date: 1988.08.24
Approval Pub. Date: 1990.12.12 Granted Pub. Date: 1990.12.12
International Classifi-cation: C21B7/16
Applicant(s) Name: Nippon Kokan K. K. Address:
Inventor(s) Name: Hotta Hiroo
Attorney & Agent: YANG WU
Abstract:
    A tuyere for a blast furnace comprises a water-cooled tuyere and a burner, fitted inside the water-cooled tuyere. The burner is composed of an inner pipe, an intermediate pipe and an outer pipe which form almost a common center axis of a concentric circle. The inside of the inner pipe is used for a pulverized coal path, an oxygen feed path being in between the inner pipe and the intermediate pipe and a flame temperature control gas feed path in between the intermediate pipe and the outer pipe. The burner is equipped with a water-cooled jacket outside the top end of the burner.
Time: 6
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