Ceramic Foam Filter
Introduction:
Honeycomb ceramics is a kind of porous industrial ceramics, and its interior is many parallel channels in triangular, square or hexagonal shape. 2Al2O3.5SiO2), aluminum titanate (Al2TiO5), mullite (3Al2O3.2SiO2), corundum (α-Al2O3) and composites are equal.Compared with ordinary ceramics, it has low thermal expansion, thermal shock, oxidation resistance, specific surface area Large,corrosion-resistant and other characteristics. The products are mainly used in metallurgy, chemical industry tower packing,regenerative high temperature air purification in construction and chemical industry, industrial waste gas treatment, flue gas removal NOx purification system in thermal power plants, waste incineration harmful gas purification system, chemical industry and mining industry Toxic gas purification, as a filter, catalyst carrier, etc. for the treatment of casting process.
Honeycomb ceramics is a kind of porous industrial ceramics, and its interior is many parallel channels in triangular, square or hexagonal shape. 2Al2O3.5SiO2), aluminum titanate (Al2TiO5), mullite (3Al2O3.2SiO2), corundum (α-Al2O3) and composites are equal.Compared with ordinary ceramics, it has low thermal expansion, thermal shock, oxidation resistance, specific surface area Large,corrosion-resistant and other characteristics. The products are mainly used in metallurgy, chemical industry tower packing,regenerative high temperature air purification in construction and chemical industry, industrial waste gas treatment, flue gas removal NOx purification system in thermal power plants, waste incineration harmful gas purification system, chemical industry and mining industry Toxic gas purification, as a filter, catalyst carrier, etc. for the treatment of casting process.
2.Alumina ceramics features:
1).Excellent electrical insulation
2).High hardness
3).Relatively low strength and fracture toughness
4).Resistance to wear and corrosive
5).Excellent thermal stability
6).Resistance to high temperatures
7).High electrical resistivity
8).Good chemical stability and resistance
9).High corrosion resistance
10).Excellent thermal shock resistance
11).High thermal insulation
12).A Low Young’s modulus
1).Excellent electrical insulation
2).High hardness
3).Relatively low strength and fracture toughness
4).Resistance to wear and corrosive
5).Excellent thermal stability
6).Resistance to high temperatures
7).High electrical resistivity
8).Good chemical stability and resistance
9).High corrosion resistance
10).Excellent thermal shock resistance
11).High thermal insulation
12).A Low Young’s modulus
|
Item
|
Aluminium Porcelain
|
Mullite
|
dense Mullite
|
loose Mullite
|
Mullite-cordierite composite
|
Corundum
|
|
SiO2
|
40-45
|
25-30
|
49-53
|
30-34
|
28-36
|
8-11
|
|
Al2O3
|
48-55
|
66-72
|
38-42
|
58-62
|
55-65
|
85-92
|
|
MgO
|
4-6
|
2-3
|
2.5-3.2
|
1.8-2.5
|
||
|
Fe2O3
|
＜1.0
|
＜1.0
|
＜1.2
|
＜1.5
|
＜0.8
|
＜0.5
|
|
TiO2+BaO
|
＜1.6
|
＜2.2
|
||||
|
CaO+Na2O
+K2O |
4.0-5.5
|
＜1.0
|
＜2.5
|
＜2.5
|
＜1.0
|
0.5-1.2
|
Physical and chemical properties
|
Item
|
Unit
|
Mullite
|
loose Mullite
|
dense Mullite
|
Mullite-cordierite composite
|
Corundum
|
|
Gross Density
|
g/cm3
|
＞2.9
|
2.2-2.4
|
2.7-2.9
|
＞2.9
|
＞3.2
|
|
Acid Resistance
|
%
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.5
|
|
(20-1000 oC)
|
10-6 oC -1
|
5.5-6.5
|
3.5-6
|
5-7
|
≤5
|
6-7
|
|
Max Working Temperature
|
oC
|
1600
|
1300
|
1360
|
1550
|
1750
|
|
Heat Capacity
|
(J/ Kg.K)
|
1100-1300
|
800-1000
|
850-1050
|
1100-1300
|
1300-1400
|
|
Heat Conductivity
|
W/MK
|
1.4-2.0
|
1.5-2.5
|
1.8-2.8
|
1.3-1.8
|
5-10
|
Honeycomb ceramic regenerator
Honeycomb ceramics can be used as heat storage body and heat exchange medium in RTO of environmental protection equipment. Because of its high heat storage rate, low pressure drop, high mechanical strength and good stability, it has replaced the traditional tower packing and has become the current use. More ceramic heat storage medium
