Insulation Bricks
INSULAC Insulating Bricks are a special type of brick that can handle high temperatures and act as insulation. Insulating firebrick is used to line fireplaces, fireboxes, furnaces and kilns. It is sometimes referred to as “refractory brick” and is designed to withstand temperatures of up to 3,200⁰F while actually conducting very little of that heat in order to provide a greater level of energy efficiency.
Insulating brick is a refractory brick or block, of a ceramic material that is commonly used in a variety of different applications including fireboxes, all types of furnaces, melters and industrial kilns.
Advantages of insulating bricks :
- High Insulating Value
- Strength
- Low Heat Storage
- High Purity
- Accurate Dimensions
| No. | Properties | Unit | CFI | HFI | HFK-40 | Mullite Insulation |
|---|---|---|---|---|---|---|
| Chemical Properties | ||||||
| 1 | Al₂O₃ | % | 30 (Min) | 30 (Min) | 40-42 (Min.) | 60.0 (Min.) |
| 2 | Fe₂O₃ | % | 2.5 (Max) | 2.5 (Max) | 2.0 (Max.) | 1.0 (Max.) |
| Physical Properties | ||||||
| 3 | Bulk Density | gm/CC | 0.8 | 0.9 | 1.0-1.2 | 1.0 (Max.) |
| 4 | A.P | % | 65 (Min) | 65 (Min) | 55 (Min) | 55 (Min) |
| 5 | C.C.S | gm/cm² | 15 (Max) | 20 (Max) | 40 (Min) | 25 (Min) |
| 6 | Thermal Conductivity at 600 °C | W/mk | 0.35 | 0.4 | 0.45 (Max) | 0.40 (Max) |
| 7 | Refractoriness Orton | - | 30 | 30 | - | - |
| 8 | Service Temperature | °C | 1250 | 1300 | 1400 (Max.) | 1550 (Max.) |