High alumina refractory mortars

Vitset ready mixed high alumina refractory cements and mortars are specially formulated for jointing, coating, and patching in a wide range of high-temperature industrial applications. Designed to perform in temperatures ranging from 1450°C (2640°F) to 1860°C (3380°F), these air-setting mortars offer excellent bonding properties both at ambient temperatures and during service. The recommended mortar bed thickness for jointing firebricks is 3 mm, ensuring optimal mechanical strength and thermal performance.

Vitset 45 - High-Temperature Refractory Mortar

Vitset 45 is an air-setting, ready-to-use refractory mortar suitable for trowelling, patching, and jointing in high-temperature environments up to 1700°C (3100°F). It forms a strong air-dried bond with all grades of refractory bricks and is also compatible with ceramic fibre materials. The easy-to-apply consistency makes it ideal for both new installations and maintenance work.

Examples of Applications: Vitset 45 is widely used in the setting and repair of dense firebricks, high-temperature insulation bricks, and ceramic fibre blankets, boards, and modules. Common industrial uses include:

• Foundry ladles

• Foundry furnaces

• Rotary cement kilns

• Ceramic kilns and kiln cars

Available in our online store: Vitset 45 - Refractory Mortar, Ready Mixed

Product	Maximum Service Temperature	Bond Type	Chemical Analysis (%)
			Al2O3	Fe2O3
VITSET 45	1700°C / 3100°F	Air setting	44.2	0.7

Vitset 80 - High Alumina Refractory Mortar for Steel and Foundry Applications

Vitset 80 is a ready mixed, air-setting refractory mortar suitable for setting all grades of refractory bricks. It can also be supplied in a thinner consistency for brick dipping, coating, and spraying applications. Vitset 80 forms a robust air-set bond that is slightly expansile at 1540°C, ensuring tight joints without shrinkage. It exhibits excellent resistance to slag attack and maintains structural stability at temperatures up to 1750°C.

Examples of Applications: Vitset 80 is widely used in steelworks and foundries, particularly in applications where high temperature and chemical attack resistance are essential. Typical uses include:

• Setting high alumina bricks in safety linings of pouring ladles

• Setting bricks and purging nozzles in continuous casting tundishes

• Rendering or dipping in refractory installations exposed to aggressive slag environments

Product	Maximum Service Temperature	Bond Type	Chemical Analysis (%)
			Al2O3	Fe2O3
VITSET 80	1750°C / 3180°F	Air setting	74.0	1.3

Vitset 85

Ready mixed high alumina refractory mortar with maximum service temperature of 1810ºC. Suitable for higher temperature alloys and treatment vessels.

Product	Maximum Service Temperature	Bond Type	Chemical Analysis (%)
			Al2O3	Fe2O3
VITSET 85	1810°C / 3290°F	Air setting	81.0	0.7

Vitset 90 - High Purity Refractory Mortar for Specialised Applications

Vitset 90 is a ready mixed, high alumina refractory mortar formulated for high-purity, high-refractoriness applications. Engineered for exceptional thermal stability and performance at elevated temperatures, it is particularly suited for use with alumino-silicate and magnesite refractories. This mortar is designed for demanding industrial environments where superior bonding strength and chemical resistance are essential.

Examples of Applications: Vitset 90 is ideal for specialised installations and maintenance in high-temperature settings, including:

• Setting sliding gate plates

• Securing purging nozzles

• Bonding pre-cast refractory shapes

Its combination of purity, strength, and thermal resilience makes it a reliable choice in steelworks, foundries, and other high-performance refractory systems. 
Available in our online store: Vitset 90 - High Alumina Refractory Mortar

Product	Maximum Service Temperature	Bond Type	Chemical Analysis (%)
			Al2O3	Fe2O3
VITSET 90	1860°C / 3380°F	Air setting	88.0	0.1