Low porosity clay brick DN-11
Low porosity clay brick is made of three kinds of raw materials: clay material, dead burning combined clay and white scorched gem.
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Details Introduction
Low-porosity clay brick is made of three raw materials: clay material, dead-burned bonded clay and white scorched gem, which are respectively broken into 5-3mm,3-1mm, and ≤ 0.088mm. Six kinds of clay materials are mixed into particles with other 6 kinds of additives. After binder, fine powder and uniformity, the brick blank is pressed with standard brick on 260T friction brick for 6-8 times and dried in a drying kiln at 110°C for 16h, when the moisture content of the brick is less than 1%, it is fired in a tunnel kiln.
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Project |
Indicators |
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DN-11 |
DN-14 |
DN-17 |
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Al2O3 % |
μ0 |
≥47 |
≥ 45 |
≥ 42 |
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. |
1.0 |
1.0 |
1.0 |
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Fe2O3 % |
μ0 |
≤ 1.2 |
≤ 1.5 |
≤ 1.8 |
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. |
0.2 |
0.2 |
0.2 |
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Bulk density g/cm3 |
μ0 |
≥ 2.40 |
≥ 2.34 |
≥ 2.26 |
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. |
0.02 |
0.02 |
0.02 |
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Percent porosity% |
μ0 |
≤ 11 |
≤ 14 |
≤ 17 |
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. |
1.0 |
1.0 |
1.0 |
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Normal temperature compressive strength MPa |
μ0 |
≥80 |
≥ 65 |
≥50 |
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. |
10 |
10 |
10 |
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load softening temperature |
μ0 |
≥ 1520 |
≥ 1470 |
≥ 1430 |
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. |
10 |
10 |
10 |
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Heating permanent line change |
L~U |
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0.1~-0.2 |
0.1~-0.2 |
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. |
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0.02 |
0.02 |
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Heating permanent line change |
L~U |
0.1~-0.2 |
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. |
0.02 |
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Thermal shock stability (1100 ℃, water cooling) |
≥ 7 times |
≥ 7 times |
≥ 7 times |
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Dimensional deviation and appearance quality |
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Project |
Indicators |
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Dimensional deviation |
Size: ≤ 230mm |
±1mm |
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Size:>230mm |
±1.5mm |
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Wedge brick size head |
≤ 1mm |
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Distortion |
Diagonal: ≤ 350mm |
≤ 1.5mm |
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Diagonal:>350mm |
≤ 2mm |
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missing angle |
a b c≤ 20mm |
Permitted |
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Allow two places |
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a b c≥50mm |
Not allowed |
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Lack of edge |
E F g≤30 mm |
Permitted |
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30mm |
Allow three places |
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E F g≥60 mm |
Not allowed |
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Molten hole diameter |
≤ 6mm |
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crack length |
Crack width: ≤ 0.25mm |
No restrictions |
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Crack width: 0.26~0.5mm |
≤ 20mm, no more than two |
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Crack width:>0.5mm |
Not allowed |
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section spalling |
Not allowed |
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Note: the barrel type lattice brick is classified according to the height deviation: |
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Key words:
Low porosity clay brick DN-11
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