Process of forming a refractory mass and mixture of particles fo

Details Process of forming a refractory mass and mixture of particles fo Process of forming a refractory mass and mixture of particles fo

1987-05-13

1989-04-04

Beck, Shrive

Coating processes

Spraying

Heated coating material

427426, B05D 110

Patent

active

048185744

ABSTRACT:
A process of forming a coherent refractory mass on a surface comprises projecting against that surface, together with oxygen, a mixture of refractory particles and fuel which reacts in an exothermic manner with the projected oxygen to release sufficient heat to melt at least the surfaces of the refractory particles and thus form the refractory mass. The projected mixture contains, as fuel, finely divided particles of at least one element which is oxidizable to form a refractory oxide and it also contains carbonaceous particles which are of such a size or composition that carbon particles become occluded in the formed refractory mass. The mixture may contain, as said fuel, finely divided particles having a mean grain size of less than 50 .mu.m of silicon, aluminium and/or magnesium. The carbonaceous particles may comprise a carbonaceous core which is covered by a mantle inhibiting oxidation of the core. The mixture may further contain particles comprising a core of at least one element which is oxidizable to form a refractory oxide which is covered by a mantle inhibiting oxidation of the core. Suitable mantle materials include metallic oxides, nitrides and carbides.

REFERENCES:
patent: 4093755 (1978-06-01), Dahl
patent: 4230750 (1980-10-01), Yurasko
patent: 4560591 (1985-12-01), Plumat et al.
patent: 4696855 (1987-09-01), Pettit et al.

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