The invention relates to
ladle castable, particularly to castable for
ladle linings or working
layers. In order to solve the technical problems, hte invention provides the
ladle castable used at the direct lining where a ladle is in direct contact with
molten steel; the ladle castable comprises the following components in percentage by weight: 8-20% of sintered microporous aluminum
spinel of 12-8mm, 11-15% of sintered microporous aluminum
spinel of 8-5mm, 12-15% of sintered microporous aluminum
spinel of 5-3mm, 10-15% of sintered microporous aluminum spinel of 3-1mm, 30-35% of sintered microporous aluminum spinel smaller than or equal to 1mm, 0-15% of modified magnesia-
calcium clinker smaller than or equal to 1mm, 1% of
chromium carbide powder, 3-5% of compound gel
powder, 1% of
hydrated alumina micropowder, 1% of nacrite
powder, 0.5% of
bismuth germanate powder, 3-5% of modified pure
calcium aluminate cement, 0.1% of C7H10N2O2S, 0.1% of C2H14Na2O6S2, and 0.05% of 4-morpholineethanesulfonic acid. Through the adoption of the ladle castable disclosed by the invention, the reacting degree of the material of the ladle lining and slags can be lowered; the high-temperature performance and the
slag corrosion resistance of
slag-resistance ladle products are improved; the
thermal shock resistance of ladles is greatly improved; the service life of whole
casting ladles is effectively prolonged, and compared with conventional ladles of the same type, the service life of ladles using the castable disclosed by the invention is prolonged by 30% and more.