Preparation method of continuous casting tundish work layer coating

The invention discloses a preparation method of a continuous casting tundish work layer coating, and belongs to the field of a refractory matter. The method comprises the following steps: weighing 30-34 parts by weight of bauxite, 100-110 parts by weight of magnesia, 10-13 parts by weight of old high-alumina bricks, 4-6 parts by weight of blast furnace dust, 5-8 parts by weight of LF refinery cinder, 4-6 parts by weight of calcium-free chromium residues and 6-9 parts by weight of converter OG mud, stirring and mixing to obtain a mixed material A; weighing 20-25 parts by weight of borax, 11-13 parts by weight of silicon carbide, 1.0-1.3 parts by weight of neodymium oxide, 0.6-0.8 parts by weight of yttrium oxide, 0.8-1.2 parts by weight of zirconium oxide, 1-2 parts by weight of polyvinyl acetate, 1-2 parts by weight of sodium dodecyl benzene sulfonate and 1-2 parts of polyacrylamide according to the parts by weight; stirring and mixing in batches to obtain a mixed solution C; adding the mixed material A to the mixed material C; adding phenolic resin, furfuryl alcohol resin and urea resin after stirring and mixing; further stirring, so as to obtain the tundish work layer coating. By adopting the coating, the refractoriness and the slag resistance are greatly improved, and the service life of the work layer is prolonged.