Fire Clay Bricks
A fire brick is a special type of brick made using fire clay and has a good resistance against high temperatures which are used in kilns, lining furnaces, fireplaces and fireboxes. These bricks are manufactured in a way similar to that of normal bricks, except during the burning process- Fire bricks are exposed to very high temperatures.
Properties
- They are yellowish white or white in color.
- They are available in different sizes ranging from 9 X 4.5 X 2.5 inches to 9 X 2.75 X 2.25 inches.
- One general fire brick weighs about 30 to 35 N.
- The compressive strength of fire bricks ranges from 200 to 220 Kg/cm2.
- The percentage of water absorption varies from 5 to 10%.
- They have good chemical resistance.
TECHNICAL DATASHEET
PRODUCT: Super Duty Fireclay Bricks
TYPE: 42% Alumina Bricks (Dense)
DESCRIPTION:
High alumina fire clay bricks made from selected raw materials calcined at high temperatures. The high density and very low amount of bonding clay give the bricks a low porosity, great mechanical strength and excellent physical properties for applications up to 1450 °C.
CHEMICAL ANALYSIS %
Al2O3: 42 %
SiO2: 50 %
Fe2O3: 1.5-1.8 %
TiO2: 2.6 %
CaO: 0.20 %
PHYSICAL PROPERTIES
Bulk Density : 2.20-2.25 % gm/cc Min
Apparent Porosity : 14-16 %
Max Cold Crushing Strength : 350 kg/cm2 Min
THERMAL PROPERTIES
Refractoriness, Orton °C: +32
RUL °C: 1425
PLC%: ± 1.0 at 1600 °C / 2 Hrs.
Thermal Conductivity, kcal/m/hr./ .C
At 400 °C HF: 0.93
At 600 °C HF: 0.96
At 800 °C HF: 0.98
Size Tolerance: ± 1.5 % OR ± 2mm whichever is greater. The above data are on average result basis
FEATURES:
- A regular High Duty dry pressed fireclay bricks based on selected raw material.
- This grade is mass produced as standard size. This manufacturing system permits to offer
this special grade at an affordable price. - Imperial can develop and manufacture variants of products totally and specifically tailored to
customer requirement.
The above data are average value based on control of our laboratories on manufacturing specimens
and are only applicable to material manufactured at the date of publication of datasheet.
ISSUED TO: ‐ ABDULLA SAAD AL OTHAIBI GENERAL CONTRACTING, DAMMAM, K.S.A
Nature of Sample: ‐ SUPER DUTY FIRE CLAY BRICKS
1. Size: 230 X 230 X 78/70MM
2. Size: 230 X 230 X 80/74MM
3. Size: 230 X 230 X 76/52MM
4. Size: 230 X 230 X 69/59MM
Date of Testing (Starting): 25/06/2020. Date of Completion: ‐ 25/06/2020
TEST CERTIFICATE OF SUPERDUTY FIRECLAY BRICKS
1. Product : 42% Alumina Bricks (Dense)
Size: 230x230x78/70 mm
| Chemical Analysis | Specification | SAMPLE 1 | SAMPLE 2 |
| Al2O3 | 42% | 42.11 | 42.13 |
| Fe2O3 | 1.5‐1.8% | 1.78 | 1.69 |
| SiO2 | 50% | 53 | 53.73 |
| TiO2 | 2.60% | 2.23 | 2.26 |
| CaO | 0.20% | 0.23 | 0.18 |
Physical Analysis
| Bulk Density (gm/cc Min) | 2.20 ‐ 2.25% | 2.21 | 2.22 |
| C.C.S. (kg/cm2 Min) | 350+ | 395 | 416 |
| Apparent Porosity | 14-16% | 14.111 | 14.1 |
Thermal Properties
| Refractoriness Orton °C | +32 | +32 |
| R.U.L. | 1430 | 1435 |
| P.L.C. % | + 0.5 at 1450 °C/ 2 hrs. | + 0.5 at 1450 °C/ 2 hrs. |
2. Product : 42% Alumina Bricks (Dense)
Size: 230 x 230 x 80/74 mm
| Chemical Analysis | Specification | SAMPLE 1 | SAMPLE 2 |
| Al2O3 | 42% | 42.09 | 42.14 |
| Fe2O3 | 1.5‐1.8% | 1.77 | 1.71 |
| SiO2 | 50% | 53.67 | 53 |
| TiO2 | 2.60% | 2.24 | 2.26 |
| CaO | 0.20% | 0.22 | 0.23 |
Physical Analysis
| Bulk Density (gm/cc Min) | 2.20 ‐ 2.25% | 2.24 | 2.23 |
| C.C.S. (kg/cm2 Min) | 350+ | 414 | 412 |
| Apparent Porosity | 14-16% | 14.17 | 14.13 |
Thermal Properties
| Refractoriness Orton °C | +32 | +32 |
| R.U.L. | 1430 | 1435 |
| P.L.C. % | + 0.5 at 1450 °C/ 2 hrs. | + 0.5 at 1450 °C/ 2 hrs. |
3. Product : 42% Alumina Bricks (Dense)
Size: 230x230x76/52 mm
| Chemical Analysis | Specification | SAMPLE 1 | SAMPLE 2 |
| Al2O3 | 42% | 42.17 | 42.03 |
| Fe2O3 | 1.5‐1.8% | 1.69 | 1.74 |
| SiO2 | 50% | 53.65 | 53.78 |
| TiO2 | 2.60% | 2.27 | 2.23 |
| CaO | 0.20% | 0.21 | 0.21 |
Physical Analysis
| Bulk Density (gm/cc Min) | 2.20 ‐ 2.25% | 2.25 | 2.23 |
| C.C.S. (kg/cm2 Min) | 350+ | 414 | 397 |
| Apparent Porosity | 14-16% | 14.15 | 14.21 |
Thermal Properties
| Refractoriness Orton °C | +32 | +32 |
| R.U.L. | 1430 | 1435 |
| P.L.C. % | + 0.5 at 1450 °C/ 2 hrs. | + 0.5 at 1450 °C/ 2 hrs. |
4. Product: 42% Alumina Bricks (Dense)
Size: 230x230x69/59 mm
| Chemical Analysis | Specification | SAMPLE 1 | SAMPLE 2 |
| Al2O3 | 42% | 42.04 | 42.16 |
| Fe2O3 | 1.5‐1.8% | 1.73 | 1.76 |
| SiO2 | 50% | 53.67 | 53 |
| TiO2 | 2.60% | 2.21 | 2.24 |
| CaO | 0.20% | 2.24 | 0.23 |
Physical Analysis
| Bulk Density (gm/cc Min) | 2.20 ‐ 2.25% | 2.20 | 2.22 |
| C.C.S. (kg/cm2 Min) | 350+ | 415 | 411 |
| Apparent Porosity | 14-16% | 14.16 | 14.23 |
Thermal Properties
| Refractoriness Orton °C | +32 | +32 |
| R.U.L. | 1430 | 1435 |
| P.L.C. % | + 0.5 at 1450 °C/ 2 hrs. | + 0.5 at 1450 °C/ 2 hrs. |
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