C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
261/25, 117/52,
C23C 4/12 (2006.01) C03B 5/42 (2006.01) C04B 35/01 (2006.01) C04B 35/65 (2006.01) C04B 35/66 (2006.01) C23C 4/10 (2006.01) F27D 1/16 (2006.01)
Patent
CA 1305573
ABSTRACT PROCESS OF FORMING A REFRACTORY MASS AND MIXTURE OF PARTICLES FOR FORMING SUCH A MASS A process of forming a coherent refractory mass on a surface comprises projecting against that surface, toge- ther 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 oxidisable to form a refractory oxide and it also contains carbonaceous particles which are of such a size or composi- tion 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 50µm 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 compri- sing a core of at least one element which is oxidisable to form a refractory oxide which is covered by a mantle inhibi- ting oxidation of the core. Suitable mantle materials include metallic oxides, nitrides and carbides.
536117
Laroche Pierre
Mottet Leon-Philippe
Robyn Pierre
Glaverbel
Swabey Ogilvy Renault
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