A full-fiber burner brick and a preparation method thereof, comprising mixing alumina crystal fiber and amorphous ceramic fiber with both of them being a combination of fibers of different lengths gradations, and moreover adding fine powder fillers of different particle size gradations and supplementing other additives. This enables the internal structure of the product more uniform, increases the bulk density of the product, and also benefits the suction filterability of fiber cotton blank, and is conducive to forming and improving the strength of the blank. The surface of the brick body is further provided with a coating, which can effectively protect the cotton fiber of the brick body fiber from harsh environments, improve its high temperature resistance, and help to extend the service life of the burner brick.

Hydraulically curable inorganic cement composition comprising at least one compound with a water solubility of >10 g/L (at 20 C.), selected from the group consisting of 5-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heterocyclic atoms and 6-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heteroatoms, and at least one water-dispersible EVA copolymer.

Hydraulically curable inorganic cement composition comprising at least one compound with a water solubility of >10 g/L (at 20 C.), selected from the group consisting of 5-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heterocyclic atoms and 6-member compounds which have an aromatic nitrogenous heterocyclic ring system that is free of other ring heteroatoms, and at least one water-dispersible EVA copolymer.