KSL-60 High Alumina Plastic Refractory Castable is a monolithic refractory material composed of high-quality bauxite aggregate, fine powder, plastic clay, and special binders. Known for its excellent plasticity, thermal shock resistance, and high-temperature strength, this castable is ideal for various industrial furnaces requiring direct contact with flame and high thermal cycling.
Unlike conventional castables, KSL-60 does not require extensive vibration or formwork and can be rammed, troweled, or pneumatically gunned into place. This makes it particularly suitable for repairs and complex-shaped refractory linings. With an Al₂O₃ content of approximately 60%, this castable offers a balance between thermal efficiency and mechanical durability.
Technical Specifications
| Property | Value |
|---|---|
| Al₂O₃ Content (%) ≥ | 60 |
| Bulk Density (g/cm³, 110℃×24h) ≥ | 2.35 |
| Cold Crushing Strength (MPa, 110℃×24h) | 50 |
| Flexural Strength (MPa) | |
| └─ 110℃×24h | 2.5 |
| └─ 1300℃×3h | 3.5 |
| Heating Permanent Line Change (%) | -1.5 ~ +0.5 (1300℃×3h) |
| Plasticity Index (%) | 12 ~ 35 |
| Moisture Content (%) ≤ | 10.0 |
Key Features
High Alumina Content (≥60%): Provides excellent resistance to slag, alkali, and high temperatures.
Superior Plasticity: Easy to shape and install without complex molds.
Excellent Thermal Shock Resistance: Withstands repeated heating and cooling cycles.
Strong Adhesion: Bonds tightly to old refractory surfaces, ideal for hot repairs.
High Mechanical Strength: Withstands heavy mechanical and thermal loads.
Versatile Installation: Suitable for ramming, patching, or lining complex surfaces.
Typical Applications
KSL-60 High Alumina Plastic Refractory Castable is widely used in:
Steel Industry: For patching blast furnaces, torpedo ladles, EAF sidewalls.
Cement Kilns: Burner pipes, nose rings, and cooler zones.
Petrochemical Furnaces: Cyclones, riser ducts, and transfer lines.
Non-Ferrous Metal Smelting: Burner blocks, launders, and holding furnaces.
Power Plants: Incinerator linings and coal burner repairs.
Production Details
All KSL-60 castables are manufactured under strict ISO quality control systems using premium-grade raw materials. Each batch undergoes:
Precise material weighing
High-speed mixing for homogeneity
Moisture and consistency checks
Pre-shipment performance testing
We ensure product consistency, density uniformity, and optimal thermal behavior for all industrial applications.
Packing and Shipping Details
Packing: 25 kg plastic-lined woven bags or 1000 kg jumbo bags.
Palletized for Export: Each pallet is shrink-wrapped for stability.
Customized Labels: With product name, batch number, and handling instructions.
Lead Time: 7–10 working days from order confirmation.
Shipping: By sea, rail, or air as required. MSDS and COA available upon request.
Frequently Asked Questions (FAQ)
Q1: What is the maximum working temperature of KSL-60?
The product can safely operate in environments up to 1600°C.
Q2: How is KSL-60 different from castable refractory cement?
KSL-60 is a plastic refractory, which means it remains pliable and can be easily shaped, unlike cement-based castables that set rigidly after installation.
Q3. Can this product be used for hot repair?
Yes, KSL-60 is ideal for hot repair applications due to its excellent bonding ability and thermal shock resistance.
Q4: How long can I store it before use?
Under proper storage (sealed and dry), shelf life is up to 6 months.
Q5: Is curing or baking required after installation?
Yes, controlled drying and gradual heating are recommended to remove moisture and ensure a strong structure.
