W-CSP 1100 Calcium Silicate Insulation
Paste — Maximum Temperature Insulation Paste for Extreme Industrial Environments
Overview
W-CSP 1100 calcium silicate insulation paste is the highest-rated grade in the Wedge calcium silicate insulation paste range, engineered for applications where operating temperatures reach 1100°C. This grade is specified for the most demanding environments in the steel, glass, cement, and ceramic industries where standard insulation materials cannot perform. Mixed on-site with water and sodium silicate, it cures to match the thermal and mechanical properties of Wedge W-LD 1100 factory-pressed calcium silicate boards — the proven benchmark for high-temperature industrial insulation.
Key Features & Benefits
- 1100°C continuous service — the highest temperature rating in the paste range; specified for steel ladles, glass tanks, cement kilns, and refractory backup
- Thermal conductivity 0.063 W/mK at 100°C, 0.155 W/mK at 600°C — optimised formulation with higher Al₂O₃ content for superior high-temperature stability
- Cured density 255–300 kg/m³ with ≥1.4 MPa compressive strength — matches the mechanical performance of factory-pressed boards
- Enhanced high-temperature stability — higher alumina content (5–10% Al₂O₃) provides lower linear shrinkage (≤1.2%) and better dimensional stability
- Full chemical resistance — inert to CO, H₂, CH₄, NH₃, N₂ reducing atmospheres; non-wettable by molten aluminium splash
- Non-combustible EN 13501-1 Class A1 — zero fire load, safe for confined plant areas and safety-critical applications
- On-site flexibility — mix only what you need, apply to any geometry, repair or extend existing insulation systems
- REACH and OSHA compliant — no asbestos, no ceramic fibres (RCF/AES), no SVHC substances
Applications
- Steel Plants: Ladle backup insulation, tundish backup, torpedo ladle insulation, continuous casting mould insulation, electric arc furnace casings
- Glass Industry: Tank furnace backup insulation, forehearth insulation, annealing lehr insulation, regenerator insulation
- Cement Industry: Rotary kiln shell insulation, preheater cyclone insulation, clinker cooler backup, calciner insulation
- Ceramic Industry: Tunnel kiln insulation, shuttle kiln backup, roller kiln insulation
- Non-Ferrous Metals: Aluminium smelter insulation, copper refining furnace insulation, zinc retort insulation
- Refractory Maintenance: Gap filling behind firebrick linings, insulation of irregular backup surfaces, repair of spalled insulation
Available Specifications
| Property | Value |
|---|---|
| Max. Service Temperature | 1100°C |
| Thermal Conductivity @ 100°C | 0.063 W/mK |
| Thermal Conductivity @ 200°C | 0.079 W/mK |
| Thermal Conductivity @ 300°C | 0.095 W/mK |
| Thermal Conductivity @ 400°C | 0.112 W/mK |
| Thermal Conductivity @ 500°C | 0.131 W/mK |
| Thermal Conductivity @ 600°C | 0.155 W/mK |
| Cured Dry Density | 255–300 kg/m³ |
| Cold Compressive Strength | ≥1.4 MPa |
| Flexural Strength | ≥0.45 MPa |
| Linear Shrinkage | ≤1.2% |
| Specific Heat @ 400°C | 1.05 kJ/kg K |
| Particle Size | 10–300 µm |
| Packaging | 25 kg bags |
| Mixing Ratio (Powder : Sodium Silicate : Water) | 100 : 20–25 : 28–38 (by weight) |
| Pot Life | 40–55 minutes @ 25°C |
Why Choose Wedge Insulation?
Wedge Industries Limited manufactures and exports insulation materials to 45+ countries. Every W-CSP grade is backed by full technical datasheets, application engineering support, and competitive volume pricing. We supply directly from our manufacturing base in India with fast dispatch to domestic and international projects.
Frequently Asked Questions
What makes W-CSP 1100 different from the 1000°C grade?
W-CSP 1100 contains a higher proportion of alumina (5–10% Al₂O₃ vs 3–7%) which provides better high-temperature stability, lower shrinkage at extreme temperatures, and a 100°C higher service rating.
Can W-CSP 1100 be used as refractory backup insulation behind firebrick?
Yes. W-CSP 1100 is widely used as backup insulation behind firebrick linings in ladles, kilns, and furnaces. It fills irregular gaps between the firebrick cold face and the steel shell that rigid boards cannot conform to.
Is W-CSP 1100 suitable for export?
Yes. Wedge exports to 45+ countries. W-CSP 1100 is classified as non-hazardous (no DG shipping requirements). Standard export packaging is 25 kg bags on shrink-wrapped pallets. We offer FOB India, CIF, and DDP terms. Contact cs@zjell.com for international enquiries.
How does the cost compare to pre-formed calcium silicate boards?
Material cost per m² is comparable to W-LD 1100 boards. However, total installed cost is typically 20–30% lower because the paste eliminates cutting waste (boards waste 15–25% on complex geometries) and reduces labour time by 40–60%.
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