Device for injecting pulverulent material, such as coal, in a bl

Details Device for injecting pulverulent material, such as coal, in a bl Device for injecting pulverulent material, such as coal, in a bl

1986-04-14

1987-10-20

Andrews, Melvyn J.

Metallurgical apparatus

Means for introducing fluent into vessel, e.g., tuyere

Having means for simultaneously feeding diverse materials

75 42, C21B 716

Patent

active

047009306

ABSTRACT:
The invention relates to a device for injecting pulverulent material, such as coal, into a blast furnace. The device includes a hot blast tuyere issuing into the blast furnace, a nozzle fixed against said tuyere and co-axial thereto for bringing the hot blast, a branch connection produced obliquely on the nozzle and directed towards the tuyere, and an injection pipe traversing the branch connection to issue into the tuyere. According to the invention, the injection pipe is substantially an arc of circle, the convexity of which is directed towards the axis of the nozzle and of the tuyere. The radius of curvature is at least equal to one hundred times its inner diameter.

REFERENCES:
patent: 3166621 (1965-01-01), Carlson
patent: 3558119 (1971-01-01), Demalander
patent: 4278367 (1981-07-01), Jacobson
patent: 4490171 (1984-12-01), Suzuki et al.

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