Product |
Corundum based high strength refractory castables |
Corundum spinel based refractory castables |
Corundum based high performance refractory castables |
Refractory castables for tertiary air duct,bend pipe and gate valve |
||
Brand |
JC-17 |
JC-18 |
JC-A·AM92 |
JC-MC18T |
JC-TZ20 |
|
Maximum service temperature |
1600 |
1700 |
1750 |
1750 |
1750 |
|
Bulk density
(kg/m3)
|
110?榴imes;24h≥ |
2900 |
3000 |
2900 |
3000 |
2700 |
Chemical composition
(%)
|
Al2O3≥ |
90 |
92 |
90 |
88 |
70 |
SiO2≤ |
6 |
4 |
?M |
?M |
?M |
|
MgO+CaO≥ |
?M |
?M |
6 |
5 |
?M |
|
Cold modulus of ruptuer(MPa) |
110?榴imes;24h≥ |
8 |
10 |
9 |
7 |
6 |
1100?榴imes;3h≥ |
12 |
12 |
?M |
8 |
7 |
|
1350?榴imes;3h≥ |
12 |
12 |
12 |
12 |
12 |
|
Cold crushing strength(MPa) |
110?榴imes;24h≥ |
80 |
80 |
55 |
60 |
100 |
1100?榴imes;3h≥ |
100 |
100 |
?M |
70 |
110 |
|
1350?榴imes;3h≥ |
120 |
120 |
85 |
120 |
120 |
|
Linear change after heating(%) |
1100?榴imes;3h≤ |
-0.1~-0.3 |
-0.1~-0.3 |
-0.1~-0.3 |
-0.1~-0.3 |
±0.5 |
1350?榴imes;3h≤ |
-0.5 |
-0.5 |
-0.1~-1.0 |
-0.1~-0.6 |
±0.6 |
|
Reference water addition for construction(%) |
5~6 |
5~6 |
5~6 |
5~6 |
6~7 |
|
Construction method |
Vibration |
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Service area |
Areas of high temperature serious abrasion such as front and back kiln mouths,pulverized coal burner,discharge hopper,etc. |
Bend pipe,gate valve |
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Properties |
1??JC-MC18T is more suitable to apply in large scale new type dry kilns,and has the best thermal shock resistance and alkali resistance. 2??Early strengthning agent and explosion-proof agent are added in the corundum based high strength series refractory castables. 3??Refractory steel fiber can be added as request,and "steel fiber reinforced" should be added in front of the product name and an "F" shall be added behind the brand.For example: the brand of the steel fiber reinforced corundum based high srength refractory castables should be JC-17F. |
As the new product of 2008,it can solve the problem of short campaign life in this area. |