Process and mixture for forming a coherent Refractory mass on a

Details Process and mixture for forming a coherent Refractory mass on a Process and mixture for forming a coherent Refractory mass on a

1997-01-29

1999-02-02

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Furnace lining formation or repair

264121, 264309, 427140, 427314, 427399, 427427, F27D 116

Patent

active

058660496

ABSTRACT:
A ceramic welding process for forming a coherent refractory mass on a surface of a refractory which is hot and which is comprised of at least one silicon compound includes providing a mixture composed of combustible particles including silicon particles, refractory particles which are silicon carbide particles and which constitute a major portion by weight of the mixture, and particles of one of (a) another substance selected from the group consisting of CaO, MgO, FeO, and mixtures thereof or (b) particles of a nonmetallic precursor of the another substance, which another substance causes incorporation of silica, formed by combustion of the silicon particles, into a crystalline lattice of a compound formed between the silica and the another substance within the coherent refractory mass being formed; and projecting the mixture against the surface of the refractory, simultaneously with substantially pure oxygen, so that the combustible particles react in an exothermic manner by combusting with the projected oxygen and release sufficient heat to form the coherent refractory mass under action of heat of combustion, and so that silica, formed by combustion of the silicon particles, is incorporated into the crystalline lattice of a compound formed between the silica and the another substance.

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