Highly reinforced refractory concrete with 4-20 volume % steel fibers
AssigneeWahl Refractory Products, Company
InventorDavid R. Lankard
Life of this patent
Estimating the term…
Abstract
A highly reinforced refractory is disclosed. In accordance with the invention higher reinforcement of refractory shapes such as plunging bells or injection lances is achieved by infiltrating a bed of metal fibers in a mold with an aqueous slurry of a refractory material containing a superplasticizer. Refractory Concrete comprises e.g. calcium aluminate cement, alumina aggregate of 35 mesh or less maximum particle size, sulfonated naphthalene formaldhyde as superplasticizer and greater than 4 volume % metal (steel) fibers.
Claims12
A refractory shape comprising a refractory concrete reinforced with greater than about 4% by volume of metal fibers said concrete containing a refractory aggregate having a maximum particle size of about 35 mesh or less.
A process for reinforcing a refractory shape which comprises:
- (a) preparing an aqueous slurry of a refractory concrete containing refractory aggregate having a maximum particle size of 35 mesh or less and a superplasticizer,
- (b) placing a bed of metal fibers in a mold, wherein said bed of metal fiber is about 4 to 20% by volume of said mold,
- (c) adding said slurry to said fibers while vibrating the mold such that said refractory concrete fills said mold and uniformly infiltrates said bed of metal fibers,
- (d) allowing said refractory concrete to harden, and
- (e) drying the refractory shape obtained.
Dependencies are inferred from the claim text.