Thermal shock resistant refractory castable and preparation method thereof

The invention discloses a thermal shock resistant refractory castable and a preparation method thereof, and relates to the technical field of refractory materials. The thermal shock resistant refractory castable prepared by the invention is prepared by adding the self-made binding agent and the reinforced fibers into the aggregate; the self-made binding agent is modified phenolic resin, the modified phenolic resin is organic Na-montmorillonite intercalated composite acid modified phenolic resin, the composite acid modified phenolic resin comprises phosphoric acid modified phenolic resin, molybdic acid modified phenolic resin and boric acid modified phenolic resin, and the thermal shock resistance and fire resistance of the pouring material are enhanced; the reinforced fibers are modified stainless steel fibers, the modified stainless steel fibers are prepared by depositing molybdenum disulfide on a stainless steel fiber network, the stainless steel fiber network is prepared by pressing and sintering porous st