Nozzle Filling Compound
Nozzle Filling Compound is a free-flowing, granular refractory material used to fill the bore of ladle nozzles and slide gate systems between casting sequences. Its primary function is to prevent molten steel from solidifying inside the nozzle bore during the period between ladle preparation and casting commencement — ensuring that when the slide gate is opened, steel flows freely without requiring oxygen lancing to clear a blocked nozzle. Imperial World Trade supplies nozzle filling compounds engineered for reliable free-opening performance across a wide range of steel grades and ladle sizes.
- High Free-Opening Rate: Chemically formulated to prevent sintering and bridging inside the nozzle bore, ensuring consistent steel flow upon slide gate opening.
- Controlled Sintering Behaviour: Outer layer sinters sufficiently to retain the compound in the nozzle bore during ladle transport while the core remains free-flowing.
- Steel Grade Compatibility: Available in silica, chromite, and zirconia-based formulations to match the specific steel grade and tapping temperature requirements.
- Chromite-Free Grades: Environmentally compliant chromite-free formulations available for steel plants with strict waste classification requirements.
- Precise Grain Size: Controlled particle size distribution ensures complete bore filling without bridging or void formation during ladle preparation.
- Moisture-Free Supply: Dried and sealed packaging prevents moisture pickup that could cause dangerous steam generation upon contact with molten steel.
A reliable nozzle filling compound is the simplest and most cost-effective insurance against nozzle blockage and the costly oxygen lancing and production delays that follow. Imperial World Trade ensures every supply batch is tested for grain size, chemistry, and moisture content before dispatch.
