Monolithic RefractoriesCastables
Lightweight Insulation Castable
Low-density insulating castable with low thermal conductivity, excellent thermal insulation and convenient installation, reducing furnace heat loss and lining weight. Grades LW0.6 to LW1.3.
- Grades / types
- LW0.6, LW0.8, LW1.0, LW1.1, LW1.3
Product overview
Lightweight insulation castable has low thermal conductivity and excellent thermal insulation performance. It saves energy, reduces consumption and is convenient to install, lowering the heat loss of industrial furnaces and the weight of the lining.
Key characteristics
- Low thermal conductivity
- Excellent thermal insulation performance
- Energy saving
- Convenient installation
- Lower lining weight
Technical data
| Property | Unit | LW0.6 | LW0.8 | LW1.0 | LW1.1 | LW1.3 |
|---|---|---|---|---|---|---|
| Bulk Density (110℃×24h) | g/cm³ | 0.6~0.7 | 0.8~0.9 | 1.0~1.1 | 1.1~1.2 | 1.3~1.4 |
| Modulus of Rupture (MOR) (110℃×24h) | MPa | ≥0.5 | ≥1.0 | ≥1.5 | ≥2 | ≥2.5 |
| Modulus of Rupture (MOR) (1100℃×3h) | MPa | ≥0.5 | ≥1.0 | ≥1.0 | ≥2 | ≥2.5 |
| Crushing Strength (110℃×24h) | MPa | ≥2.0 | ≥2.5 | ≥5 | ≥6.5 | ≥7.5 |
| Crushing Strength (1100℃×3h) | MPa | ≥1.5 | ≥2.0 | ≥3 | ≥5.5 | ≥10 |
| Thermal Conductivity (350℃±25℃) | W/(m·K) | ≤0.2 | ≤0.25 | ≤0.28 | ≤0.35 | ≤0.4 |
| Max Working Temperature | ℃ | 1000 | 1100 | 1150 | 1200 | 1250 |
Where Refractories Are Used
Industry
Power & CFB Boilers
Refractories in CFB boilers are used in areas including the boiler combustion chamber, the cyclone separator and refeeder, the economizer, the ignition air flue and cold air chamber, and the tail flue. Material selection varies by operating zone and includes wear-resistant castables, steel-fibre-reinforced castables, wear-resistant plastic refractories, thermal-shock-resistant and fireclay castables, wear-resistant and fireclay bricks, and insulating products.
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Nonferrous Metals
Refractories for nonferrous metals divide into two groups. For aluminium they line the electrolysis cell side wall, corners and bottom, the smelter and the holding furnace, using silicon nitride bonded silicon carbide, carbon-based materials, low cement and non-stick castables and insulation. For copper, zinc, lead and nickel they are magnesia-chrome bricks in directly bonded, semi-rebonded and fused rebonded types.
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Glass
Refractories in the glass industry line the melting tank, the superstructure, the working end and forehearth, the throat and the regenerator. Different furnace types take different materials, in fused, siliceous and magnesia groups: silica, clay, high alumina, sillimanite, mullite, fused mullite, zirconia-corundum, fused corundum and zirconium-containing refractory bricks.
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Chemical & Petrochemical
Refractories in chemical and petrochemical plants line coal water slurry and residue oil gasifiers, secondary reformers, carbon black reactors, hydrogen production furnaces, gas generators and cracking furnaces. The technical reference's gasifier schemes build the lining from a high chrome brick working face, a chrome corundum brick backing, an alumina bubble brick insulating layer, refractory castables and a ceramic fibre coating or felt against the shell.
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Cement
Refractories in cement plants line the preheater, the calciner and tertiary air duct, the rotary kiln from the kiln inlet through the safety, transition and burning zones to the kiln outlet, the kiln hood and burner, and the grate cooler. RISING's kiln configuration tables assign alkali-resistant bricks and castables to the preheater system, silicon mullite, magnesia spinel and magnesia-chrome bricks to the kiln zones, and low-cement and steel-fiber castables to the kiln mouths, hood and cooler.
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Available grades, shapes and sizes
Available grades
- LW0.6
- LW0.8
- LW1.0
- LW1.1
- LW1.3
Related solutions
Services that work with this family of materials.
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Technical Consultation
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