Immersion nozzles for metal melts

Details Immersion nozzles for metal melts Immersion nozzles for metal melts

1991-10-11

1992-12-15

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264109, 501 89, 501 98, C04B 3510

Patent

active

051714957

ABSTRACT:
A refractory immersion nozzle which can be used for processing metal melts, and a process for producing the nozzle by providing a mixture containing alumina having a maximum grain size of 250 microns, an aggregate having less tendency than alumina to form incrustations during use of the nozzle, boron nitride, a fluxing agent, a bonding agent and a mixing liquid, molding the mixture to form a shaped body, and drying the shaped body. The nozzle inhibits accretion of slag constituents from the metal melts, and has sufficiently good spalling resistance.

REFERENCES:
patent: 3759725 (1973-09-01), Steen et al.
patent: 3979214 (1976-09-01), Trastel
patent: 4634685 (1987-01-01), Pohl et al.
patent: 4857488 (1989-08-01), Aiba et al.

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