Isolated Fire Bricks
Isolated firebricks are insulation bricks which are light and resistant from 1200°C to 1730°C, having high thermal insulation. They are materials with uniform porosity distribution formed by the perfect mix of the raw materials of high-purity of refractory clay and ceramic. They don't contain undesired residues such as iron-oxide as they are manufactured from raw materials.
ADVANTAGES:
• They are manufactured with raw materials of high purity.
• Their size is fixed and no brick is any different than one another.
• They have low thermal shrinkage.
• They have a high compressive strength.
• They have low thermal conductivity.
• They can be used against direct heat sources. (foreground)
• They have high thermal shock resistance.
• There have a low heat capacity due to low densities.
• Easy to shape
• It is possible perform excellent insulations with low application costs on less thicker walls for their low density and high insulation effect
APPLICATION MORTAR:
It has been specially developed for applications of isolated bricks. They are available as ready-to-use with high purity and fine-sized raw materials. They are resistant to temperatures up to 1649°C. They are made of high purity ceramic raw materials and chemical binding.
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ASTM C155-97 Classification |
20/23 |
23 |
25 |
26 |
28 |
30 |
32 |
|
ISO 2245 Classification |
125-0.5-L |
125-0.5-L |
135-0.8-L |
140-0.8-L |
150-0.9-L |
160-1.0-L |
170-1.25-L |
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ClassificationTemperature ℃ |
1230 |
1230 |
1350 |
1430 |
1510 |
1620 |
1730 |
|
Density, ASTM C134-95 kg/m3 |
520 |
580 |
800 |
800 |
880 |
1030 |
1250 |
|
Cold Crushing Strength ASTM C133-97 Mpa |
1,2 |
1,8 |
2,5 |
2,2 |
2,5 |
2,5 |
3,5 |
|
Modulus Of Rupture (MOR) |
100 |
145 |
205 |
220 |
230 |
250 |
305 |
|
ASTM C133-97 |
0,7 |
1 |
1,4 |
1,5 |
1,6 |
1,7 |
2,1 |
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Permanent Linear Change, % |
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ASTM C210-85 |
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2250℉ 1230℃×24hrs |
0,0 |
0,0 |
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2370℉ 1300℃×24hrs |
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2460℉ 1350℃×24hrs |
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|
-0,3 |
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2550℉ 1400℃×24hrs |
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|
-0,4 |
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2732℉ 1500℃×8hrs |
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2750℉ 1510℃×24hrs |
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|
|
-0,9 |
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2822℉ 1550℃×8hrs |
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2912℉ 1600℃×8hrs |
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2950℉ 1620℃×24hrs |
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|
-1,3 |
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3150℉ 1730℃×24hrs |
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|
-0,9 |
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Reversible Linear Thermal Expansion |
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(%) at 1100℃ |
0,45 |
0,48 |
0,48 |
0,48 |
0,49 |
0,5 |
0,55 |
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Thermal Conductivity |
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ASTMC182-88 |
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Mean Temperature ℃(℉) W/m-k |
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200 (392) |
0.15 |
0.15 |
0.21 |
|
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400 (752) |
0.17 |
0.18 |
0.24 |
0.27 |
0.26 |
0.39 |
0.49 |
|
600 (1112) |
0.19 |
0.20 |
0.28 |
0.30 |
0.29 |
0.42 |
0.50 |
|
800 (1472) |
0.22 |
0.23 |
0.32 |
0.33 |
0.31 |
0.43 |
0.51 |
|
1000 (1832) |
0.24 |
0.26 |
0.37 |
0.36 |
0.34 |
0.44 |
0.53 |
|
1200 (2198) |
|
|
0,4 |
0,38 |
0.37 |
0.48 |
0.56 |
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Chemical Analysis |
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Alumina Al2O3 % |
50 |
50 |
50,5 |
56 |
67 |
73 |
77 |
|
Ferric Oxide Fe2O3 % |
0,9 |
0,9 |
0,85 |
0,8 |
0,6 |
0,5 |
0,4 |
|
Calcium Oxide CaO % |
0,29 |
0,29 |
0,29 |
0,29 |
0,24 |
0,22 |
0,2 |
|
Silica SiO2 % |
45 |
45 |
45 |
42 |
29 |
24 |
21 |
• In combustion chambers,
• In ceramic and porcelain furnaces
• In heat treatment furnaces using protective gas atmosphere
• In box-type heat treatment furnaces,
• As an insulation layer in pots
• On the side walls of glass furnaces,
• In general furnace applications.
