Slag stopper and preparation method thereof

The invention relates to the technical field of metallurgical production continuous casting, and provides a slag stopping plug and a preparation method thereof. The slag stopping plug comprises a plug head part and a plug body part, and the plug head part and the plug body part are each independently prepared from, by mass, 55-65 parts of bauxite, 30-40 parts of magnesia, 10-15 parts of white corundum, 5-10 parts of brown corundum, 2-5 parts of borax, 4-8 parts of silica powder, 5-9 parts of phenolic resin and 1-5 parts of 1, 4-bis (oxirane-2-yl) benzene. The preparation method of the slag stopper comprises the following steps: uniformly mixing the bauxite, the magnesia, the white corundum, the brown corundum, the borax, the silica powder and the 1, 4-di (oxirane-2-yl) benzene, adding the rest raw materials and water, continuously mixing, molding, demolding and baking to obtain the slag stopper. By means of the technical scheme, the problem that in the prior art, a slag stopping plug made of phenolic resin is