|
 Introduction
 The XINTAO 23 Support Media is one of the new media in the industry with unmatched impact resistance, thermal shock, crush strength,andsurvivability. Products to these specifications are manufactured from very high quality chemical-porcelain clay materials, which has quite excellentstability, high mechanical strength and resistance to thermal shock, This makes them all ideal choice for support of all types of catalyst.
 Chemical composition
| Typical Technical Composition |
Min. % |
Max. % |
Usual % |
SiO2 |
61.50 |
77.00 |
74.90 |
Al2O3 |
18.50 |
26.00 |
19.90 |
Fe2O3 |
****** |
1.60 |
0.90 |
TiO2 |
****** |
1.40 |
0.93 |
CaO |
****** |
1.00 |
0.13 |
MgO |
****** |
1.00 |
0.34 |
Na2O |
****** |
1.80 |
1.56 |
K2O |
****** |
5.50 |
2.34 |
Al2O3+SiO2 |
90.00 |
96.00 |
92.80 |
Physical properties
Index |
Value |
Value |
Leachable Iron |
≤ 0.1% |
|
Apparent Porosity by Weight |
2-6 % |
|
Moh's Hardness Scale |
>6.5 |
|
Water Absorption |
<1.0wt.% |
|
Acid Resistance |
>99.8% |
|
Thermal Conductivity |
0.9-1.0 w/m 2 .k |
|
Thermal Expansion @ 500 ℃ |
0.20% |
|
Specific Heat |
628-837 j/kgq |
|
Thermal Shock Stability, @ 500 ℃ then water cooling |
10 times |
|
Max. Operating Temperature |
1050 ℃ |
1922 ℉ |
Specific Density |
2,200 kg /m 3 |
137 lb /ft 3 |
Bulk Density (Packing Density) |
1,300 g /cm 3 |
81 lb /ft 3 |
Crush Strength
Size / |
Crush Strength |
Nominal Size |
(lbs) |
(kg) |
(N/pc) |
mm |
inch |
min. |
min. |
min. |
3 |
1/8 |
55 |
25 |
245 |
6 |
1/4 |
165 |
75 |
735 |
10 |
3/8 |
265 |
120 |
1176 |
13 |
1/2 |
518 |
235 |
2305 |
16 |
5/8 |
617 |
280 |
2745 |
19 |
3/4 |
1070 |
485 |
4756 |
25 |
1 |
1763 |
800 |
7845 |
38 |
1-1/2 |
2050 |
930 |
9120 |
50 |
2 |
3142 |
1425 |
13975 |
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