SK32 SK34 SK35 SK36 SK38 Fire Clay Brick For Industrial Furnaces
SK32 SK34 SK35 SK36 SK38 Fire Clay Brick For Industrial Furnaces
Leadsun produces a full range of fire clay bricks with 30–65% alumina, all providing excellent strength. For more demanding conditions, we supply hand-fired “Super Duty” fire clay bricks with exceptionally high mechanical strength.
Made from flint clay, our firebricks feature low iron and low alkali content and deliver superior resistance to thermal shock, abrasion, chemical attack, and reducing atmospheres. They are ideal for a wide variety of industrial applications.
A wide range of standard sizes is available from stock, with custom sizes produced on request.
Technical data
| Item | SK-30 | SK-32 | SK-34 | SK-36 |
| AL2O3 % (min) | 30-35% | 35-38% | 38-42% | 50-55% |
| Fe2O3% (max) | 3 | 3 | 2.8 | 2.5 |
| Refractoriness | ≥1670°C | ≥1690°C | ≥1710°C | ≥1750°C |
| Refractoriness under load, 0.2MPa, (°C) | ≥1270 | ≥1350 | ≥1350 | ≥1430 |
| Apparent porosity (%) | 20-24 | 20-24 | 19-23 | 18-22 |
| Bulk density (g/cm³) | 2.00-2.05 | 2.05-2.1 | 2.1-2.15 | 2.15-2.25 |
| Cold crushing strength (MPa) | ≥25 | ≥30 | ≥35 | ≥45 |
| Thermal expansion at 1000°C (%) | ≤0.6 | ≤0.55 | ≤0.55 |
≤0.4 |
Features
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Low thermal conductivity for excellent thermal insulation.
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Long service life and easy to handle; can be cut and shaped freely.
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Multiple specifications available: standard bricks, normal standard, shaped, and special-shaped bricks.
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Versatile and cost-effective; suitable for various kilns and widely used across industries.
Applications
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Carbon bake furnaces in the aluminum industry
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Preheating zones and cyclones of rotary cement kilns
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Insulation for glass tanks
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Coke ovens
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Blast furnaces
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Reheating furnaces
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Suspended roofs
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Lime kilns
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Chimneys
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.