High pressure/volume process for wet shotcreting a refractory ca

Details High pressure/volume process for wet shotcreting a refractory ca High pressure/volume process for wet shotcreting a refractory ca

1998-07-10

1999-12-21

Beck, Shrive

Coating processes

Spraying

427427, B05D 102

Patent

active

060046260

ABSTRACT:
A method of applying a refractory castable onto a surface of a refractory structure, comprising the steps of: [a)] preparing a thoroughly mixed wet castable for application onto a surface of a refractory structure; [b)] conveying the wet-mixed refractory castable at a set rate under pressure through a delivery hose having a predetermined cross-sectional area to a dispensing device having an air inlet and a dispensing nozzle; [c)] introducing air under pressure into the dispensing device, wherein the air pressure ranges from about 20 psi to about 80 psi and wherein the air has a velocity of about 177 ft/sec at 20 psi and an air velocity of about 484 ft/sec at 80 psi and wherein the velocity increases by about 5 ft/sec for every unit increase in the pressure.

REFERENCES:
patent: 4262055 (1981-04-01), Russell et al.
patent: 4327185 (1982-04-01), Bonsall
patent: 4444593 (1984-04-01), Schutz
patent: 4780142 (1988-10-01), Rechter
patent: 5512325 (1996-04-01), Langenohl et al.

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