Refractory Mortar
Refractory Mortar is the binding agent that transforms individually laid refractory bricks into a unified, thermally stable structure. Applied as a thin joint between bricks during masonry construction, the mortar fills micro-gaps, prevents heat leakage through joints, and absorbs differential thermal expansion stresses that would otherwise crack the lining. Imperial World Trade supplies a complete mortar range — fire clay, high alumina, basic, and chemically setting types — ensuring perfect chemical compatibility with every brick grade in our portfolio.
- Fire Clay Mortars: Compatible with standard fire clay and SK-32/SK-34 bricks; suitable for medium-temperature furnace construction up to 1,350°C.
- High Alumina Mortars: Formulated to match SK-36, SK-38, and 70%+ alumina bricks; service temperatures up to 1,750°C.
- Heat Setting Type: Develops full strength only at operating temperature, accommodating thermal expansion naturally during heat-up.
- Air Setting Type: Achieves ambient-temperature bond strength; ideal for structural stability before first firing.
- Thin Joint Application: Optimized particle size allows application at 1-3mm joint thickness for minimal thermal bridging.
- Basic Mortars: Magnesite-based binders for jointing basic bricks in steel ladles and EAF linings.
Selecting the correct mortar grade is as important as selecting the correct brick. Imperial World Trade’s technical team ensures every mortar recommendation is chemically matched to your specific brick grade and operating temperature.
