Device for the injection of pulverized coal into a blast furnace

Details Device for the injection of pulverized coal into a blast furnace Device for the injection of pulverized coal into a blast furnace

1993-06-30

1995-09-19

Andrews, Melvyn

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266221, 266222, 266225, 266267, 266268, 75460, C21B 716

Patent

active

054510341

ABSTRACT:
A method and device is provided for the combined injection of pulverized coal and a gaseous oxidant into a crucible of a shaft furnace, especially a blast furnace, through a hot-air blast tuyere. In the region of the nozzle end of the tuyere in the crucible, the pulverized coal is injected into the hot-air blast, in the form of a hollow annular jet and the gaseous oxidant is injected inside the hollow annular jet. A lance for implementing the method comprises two coaxial tubes and a distributing unit provided with a central bore for the pulverized coal.

REFERENCES:
patent: 3626501 (1969-12-01), Baird et al.

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