| MOQ: | 500 pcs |
| Price: | Negotiable |
| Standard Packaging: | pallets |
| Delivery Period: | 10 days |
| Payment Method: | L/C, D/P, T/T, Western Union |
| Supply Capacity: | 10000 pallets/month |
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
Low thermal conductivity for excellent thermal insulation.
Long service life and easy to handle; can be cut and shaped freely.
Multiple specifications available: standard bricks, normal standard, shaped, and special-shaped bricks.
Versatile and cost-effective; suitable for various kilns and widely used across industries.
Applications
Carbon bake furnaces in the aluminum industry
Preheating zones and cyclones of rotary cement kilns
Insulation for glass tanks
Coke ovens
Blast furnaces
Reheating furnaces
Suspended roofs
Lime kilns
Chimneys
![]()
![]()
![]()