Blast furnace operation methods and blast furnace
TW202635900APending Publication Date: 2026-09-01NIPPON STEEL CORPORATION
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Patent Information
- Application Number
- TW114148129
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-19
- Filing Date
- 2025-12-09
- Publication Date
- 2026-09-01
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Figure TWG2TA001074832_001 
Figure TWG2TA001074832_002
Abstract
In the method of blowing high-temperature reducing gas into the blast furnace body, the piping connecting the heating part for heating the reducing gas and the blowing part of the blast furnace body is a multi-pipe structure with at least an inner pipe and an outer pipe, with heat insulation material between the inner pipe and the outer pipe, and an inactive gas is filled between the inner pipe and the outer pipe.
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