C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/123, 261/24,
C04B 35/00 (2006.01) C03B 5/43 (2006.01) C04B 35/66 (2006.01) C04B 37/00 (2006.01) C04B 41/50 (2006.01) C04B 41/53 (2006.01) C04B 41/87 (2006.01) C04B 41/91 (2006.01) F27D 1/16 (2006.01)
Patent
CA 1321608
Abstract Surface treatment of refractories In a process of dressing a refractory structure, a comburent gas stream carrying a mixture of particles is projected against the site to be dressed. Theparticle mixture comprises particles of one or more elements which is or are oxidisable to form one or more refractory oxides ("fuel particles") together with refractory oxide particles and the fuel particles are caused or allowed to burn during projection. The mixture further incorporates a fluxing agent, the fluxingaction of which is such that under the heat released by combustion of the fuel particles, the refractory structure becomes softened to an extent such that the structure becomes dressed by removal or displacement of material thereof under the mechanical action of the impinging stream. Suitable fuels include very fine particles of aluminium and/or silicon. Suitable fluxes include fluorides and compounds of metals other than those whoseoxides are projected in the mixture. for example alkali metal compounds, especially salts selected from borate, sulphate, carbonate and phosphate.
586098
Glaverbel
Swabey Ogilvy Renault
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