Blast furnace, blast furnace operation methods and tuyeres

TW202639867APending Publication Date: 2026-10-01NIPPON STEEL CORPORATION
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Patent Information

Application Number
TW114141808
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-03-27
Filing Date
2025-10-29
Publication Date
2026-10-01

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Abstract

A method for operating a blast furnace, wherein the blast furnace has a tuyere, the tuyere has a tuyere body, a gaseous reducing material injection lance, and a solid reducing material injection lance, the tuyere body has a hot air flow path, and the lance of either the gaseous reducing material injection lance or the solid reducing material injection lance has an outlet in the hot air flow path, while the lance of the other has an outlet inside the lance of the other.
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