BNZ ZELIENOPLE, PA
BNZ produces thirteen types of Insulating Fire Brick (IFB) for use in applications from 2,000°F (1,093°C) to 3,200°F (1,760°C). Each type is formulated to meet specific thermal and physical requirements and after firing is machined to precise tolerances.
Made from high purity refractory clays and other ceramic raw materials, these IFB contain a carefully graded organic filler which is burned out during manufacture to give a uniform controlled pore structure.
Advantages
- High Insulating Value
- The light weight and high insulating value of BNZ IFB make possible thinner furnace walls, improved efficiency and lower operating costs.
- Strong
- The high compressive strength of IFB allows for self-supporting structures at elevated temperatures. IFB are compatible with dense fire brick and add strength to the whole construction.
- Low Heat Storage
- Lower heat storage versus dense brick means reduced fuel costs in cyclically operated heating equipment.
- High Purity
- BNZ IFB are low in impurities such as iron which can adversely affect refractory performance in many applications. They are used in many furnaces operating with a controlled atmosphere.
- Accurate Dimensions
- Because BNZ Insulating Fire Brick are machined to precise dimensions, courses can be laid quickly and easily. The result is a stronger, tighter refractory lining resulting in less heat loss through the joints.
Typical Applications
Recommended for use as primary hot face refractory linings or as back-up insulation behind other refractories in furnaces, flues, kilns and similar high temperature industrial equipment.
Size is no obstacle. Most BNZ IFB are available in Zelie Jumbo™ series, which require no mortar joints to produce sizes up to 24"x9"x3". No longer are there design limitations caused by traditional standard brick shapes and sizes. The nominal cost of Zelie Jumbo™ sizes is more than offset by the elimination of many mortar joints and significant labor savings.
Individual product data sheets and an extensive list of potential applications are available at your request or you can download an 
Adobe PDF data sheet by clicking the button next to the product name. If you need the free Adobe pdf reader, you can download the latest version by clicking the button here.
Design
Temperature use limits should be considered along with other properties of the IFB in determining the proper grade to use for your application.
The hot load deformation along with the mean temperature (i.e. the temperature at the midpoint of the brick) should be considered as well, to assure a successful application.
Guidelines for the mean temperature of each type brick are:
| Guidelines |
| Maximum Mean Temperature |
Type Brick |
| 1,800°F (982°C) |
BNZ-23L |
| 2,100°F (1,149°C) |
BNZ-23, BNZ-23HS, C-22Z |
| 2,200°F (1,204°C) |
BNZ-25, BNZ-26, BNZ-26-60, BNZ 26-HS, BNZ-28, BNZ-29 |
| 2,400°F (1,316°C) |
BNZ-3000 |
| 2,600°F (1,427°C) |
BNZ-32 |
- MSDS for all Insulating Firebrick
- MSDS for BNZ Aggregate 2337, 2645, 2653, 2855,2861 Milled Insulating Fire Brick
- MSDS for I-FIX.HOT Milled Insulating Fire Brick
Consult your BNZ representative for recommendations on the best combination of products for your temperature, processing and atmospheric conditions.
Available Forms
In addition to the great number of standard sizes available, Insulating Fire Brick are also available in special cemented or machined shapes. A large machine shop at the factory is capable of supplying accurate machined shapes of nearly any description. The unique large slab means that a finished shape will have fewer joints than shapes made from any other IFB manufacturer.
IFB shapes with drilled holes, grooves, flycuts, tapers, radii cuts, skew planes, tongue and groove, notches and chord cuts are easily fabricated in any quality IFB.
Articles of Interest
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Warranty
BNZ Materials warrants that its products are manufactured in accordance with its applicable material specifications and are free from defects in workmanship and materials using BNZ's specifications as standard. Every claim under this warranty shall be deemed waived unless in writing and received by BNZ within thirty (30 days of the date the defect was discovered and within one (1) year of the date of the shipment of the product.
BNZ MAKES NO OTHER REPRESENTATIONS OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, IN FACT OR IN LAW, INCLUDING WITHOUT LIMITATION, THE WARRANTY OF MERCHANTABILITY OR THE WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, OTHER THAN THE LIMITED WARRANTY SET FORTH ABOVE.
Limitation of Liability
It is expressly understood and agreed that the limit of BNZ's liability shall be the resupply of a like quantity of non-defective product and that BNZ shall have no such liability except where the damage or claim results solely from breach of BNZ's warranty.
IT IS ALSO AGREED THAT BNZ SHALL NOT BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, OR OTHER DAMAGES FOR ANY ALLEGED NEGLIGENCE, BREACH OF WARRANTY, STRICT LIABILITY, OR ANY OTHER THEORY, OTHER THAN THE LIMITED LIABILITY SET FORTH ABOVE.
