Refractory composition and process for the repair of a hot refractory wall
AssigneeVesuvius Crucible Company
InventorsSerge Sabre, Christophe Jonas
Life of this patent
Estimating the term…
Abstract
The present invention relates to refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2 to 8% of water. These compositions are particularly useful for the repair of coke oven damaged wall in a gunning process.
Claims15
A gunning refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina-based compounds, 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2-8% of water.
A process for the repair of a hot silica refractory wall comprising the steps of
- a) conveying a refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds, 10 -15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2-8of water to a gunning nozzle;
- b) mixing the refractory composition with water in the gunning nozzle;
- and
- c) gunning the obtained mixture against the hot refractory wall.
Dependencies are inferred from the claim text.