Device for injecting divided solid materials in a smelting blast

Details Device for injecting divided solid materials in a smelting blast Device for injecting divided solid materials in a smelting blast

1986-05-02

1988-09-20

Andrews, Melvyn J.

Metallurgical apparatus

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

Having means for simultaneously feeding diverse materials

75 1019, C21B 716

Patent

active

047719931

ABSTRACT:
The tuyere comprises a substantially cylindrical or slightly convergent frusto-conical downstream part, and a divergent frusto-conical upstream part; the plasma torch is placed co-axially to the tuyere at the inlet to the upstream part thereof; the solid materials injection nozzle issues at an angle into the upstream part of the tuyere and the angle of taper of the upstream part of the tuyere substantially corresponds to the angle of natural expansion of the plasma jet, so that said materials are carried with the plasma jet and that part of them are provided onto the inner wall of the tuyere.

REFERENCES:
patent: 3827851 (1974-08-01), Walker
patent: 3892882 (1975-07-01), Guest et al.
patent: 4002466 (1977-01-01), MacRae et al.
patent: 4072502 (1978-02-01), Santen et al.
patent: 4422624 (1983-12-01), Dunham et al.
patent: 4611332 (1986-09-01), Santen

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