Corundum self-flowing castables are mainly used for the bottom of ladle, with fused white corundum as the main material, suitable micro-powder and dosage, the amount of cement is controlled at 3-4%, a small amount of anti-explosive agent and dispersant are added.

Characteristics of refractory castables for refining outside the furnace: 1. High refractoriness, good stability, and resistance to high temperature and vacuum conditions under out-of-furnace refining conditions 2. Low porosity, high bulk density, compact organization to reduce slag penetration

The tapping ditch is the channel through which the molten iron flows when the blast furnace is tapping. The service life of the trench can be prolonged by laying refractories on the trench.

The metal mixer is a thermal equipment for storing and homogenizing molten iron in the steel making plant. The lining material is subjected to the action of molten iron scouring, slag erosion, temperature change and large dynamic load vibration for a long time, and is easily damaged.