Surface treatment of refractories

Details Surface treatment of refractories Surface treatment of refractories

1993-07-27

1995-07-25

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Furnace lining formation or repair

156 98, 264 80, 264265, 266 44, 266281, C21B 706, F27D 116, B32B 3500

Patent

active

054359481

ABSTRACT:
A process for cleaning a surface of a refractory structure which is at an elevated temperature, including projecting against the surface a comburent gas stream which is a powder stream including fuel particles carried in an oxygen-containing carrier gas the comburent gas stream impinging upon the surface at an impingement zone, whereby the fuel particles are caused or allowed to burn in a reaction zone defined generally around the impingement zone and the heat generated by the combustion of the fuel particles causes the surface or material adhered thereto to melt and provide a melted material, and projecting a scouring stream including oxygen simultaneously or alternately at the surface to scour the surface in the vicinity of the reaction zone and thereby clean the surface due to the scouring stream blowing away the melted material.

REFERENCES:
patent: 936981 (1909-10-01), Blautigam
patent: 3365523 (1968-01-01), Stresino
patent: 4017960 (1977-04-01), Kawabe et al.
patent: 4487397 (1984-12-01), Antonov et al.
patent: 4871211 (1989-10-01), Aussel
patent: 4875662 (1989-10-01), Head et al.
patent: 5002910 (1991-03-01), Robyn
patent: 5100594 (1992-03-01), Zvosec et al.
patent: 5202090 (1993-04-01), Zvosec et al.
patent: 5270075 (1993-12-01), Robyn et al.

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