Refractory Castables

Monolithic refractory materials for high-temperature furnace linings, complex structural areas and local repair sections.

Refractory Castable Systems

Refractory castables are monolithic refractory materials that can be installed by on-site casting. They are used for high-temperature furnace linings, complex structural areas and local repair sections. Compared with shaped refractory bricks, castables form a continuous lining structure, helping reduce joint-related corrosion, spalling and weak points while offering greater installation flexibility.

Refractory castables are typically made from refractory aggregates, fine powders, binders and additives. After mixing with water on site, they can be installed by casting, vibration or similar methods. After curing and drying, the material forms an integral lining with good strength, refractoriness and volume stability.

Based on different raw materials and bonding systems, refractory castables can be classified into corundum castables, corundum-mullite castables and high-alumina low-cement castables. Each type provides different advantages in refractoriness, strength, thermal shock resistance, corrosion resistance and installation performance.

Refractory castables for monolithic industrial furnace linings

Key Features

Flexible Installation and Integral Lining Performance

Castable systems support new furnace construction, complex lining geometry and localized maintenance while reducing the number of joints in the completed lining.

Mixing and installation of refractory castables

Suitable for on-site casting in complex and irregular structures.

Forms an integral lining with fewer joints and weak points.

Flexible installation for new linings and repair areas.

Different performance levels are available through the selection of raw material and bonding systems.

Good strength and volume stability after curing and drying.

Compatible with formwork, anchors and vibration installation methods.

Product Series

Compatible Refractory Material Systems

Refractory castables can be combined with shaped bricks, insulation systems and engineered components to create a complete furnace lining solution.

Alumina-Based Refractory Bricks

Used in high-alumina, wear-resistant and high-temperature lining zones together with corundum and high-alumina castables.

Magnesia Refractory Bricks

Used in basic slag and severe corrosion zones where castables and basic shaped bricks form a zoned lining system.

Insulating and Lightweight Refractories

Used as backup insulation behind dense castable working linings to reduce heat loss and improve thermal efficiency.

Precast and Custom Refractory Components

Castable formulations can be manufactured as precast components for complex geometry, faster installation and controlled factory curing.

Engineering Technical Support

For refractory castable selection, please provide the furnace type, lining position, operating temperature, atmosphere or medium, primary damage condition, installation thickness, construction method, required quantity and project schedule.

JHYRef can recommend a suitable corundum, corundum-mullite or high-alumina low-cement castable system and provide support for material selection, mixing, installation, curing and drying requirements.