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US 5,966,886 AGranted
Method for partially building and/or repairing at high temperatures industrial facilities including a structure made of refractory materials, and prefabricated element therefor
AssigneeFIB-Services
InventorOswaldo Di Loreto
Life of this patent
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Abstract
A method for repairing industrial facilities at high temperatures using at least one prefabricated element (1) made of mullite-crystallized refractory product with an alumina content of 30-80%, preferably 50-80%, made of refractory materials securely attached to the structure (11) of the facility by using an oxygen-containing carrier gas stream to spray a mixture of particles capable of exothermically reacting with the oxygen and particles of a refractory material, whereby a coherent refractory mass (14) is formed in situ for attaching said element to said structure.
Claims19
A repaired silica refractory structure, comprising
- a replacement pre-fabricated refractory body located at a repair position of the silica refractory structure, and
- a coherent refractory mass bonding said pre-fabricated refractory body to the silica refractory structure, said coherent refractory mass comprising an oxidized mixture of particles of exothermically oxidizable material and particles of refractory material wherein
- said pre-fabricated refractory body comprises a mullite-crystallized refractory body having an alumina content of 30-85%, and
- said coherent refractory mass is compatible with said mullite-crystallized refractory body and said silica refractory structure, and has a thermal expansion coefficient compatible with the coefficients of thermal expansion of said refractory body and said silica refractory structure, taking into account stresses to which the so-repaired silica refractory structure will be subjected under working conditions.
1 more element
Dependencies are inferred from the claim text.