High alumina refractory castable
High alumina refractory castable are made of high alumina bauxite as clinker, refractory clay as powder. Then dded aluminate cement and sodium tripolyphosphate according to the proportion of the mixture, and its service temperature is 1400-1550℃.
High alumina refractory castable is used as an aggregate and a powder, a refractory castable made of a binder is added. High alumina refractory castable has high mechanical strength and good resistance to thermal shock and abrasion. High alumina refractory castable is mainly used as the lining of various kiln such as boiler, blast furnace hot blast stove, heating furnace and ceramic kiln. Soaking furnace, heat treatment furnace, rotary kiln; various high temperature burner lining, heating furnace water pipe lining, molten steel furnace refining device parts and high temperature wear resistant body of petrochemical catalytic cracking reactor; blast furnace tapping groove, iron The furnace iron tapping tank and the integral spray gun for hot metal pretreatment are lined up. Large prefabricated blocks and linings can be made.
high alumina refractory castable Application：
It can be used as lining and burners for various heat treatment furnaces, blast furnaces, heating furnaces, electric furnace tapping slot,high temperature zone of lime shaft kiln, Rotary kiln head, power plant boiler and other industrial furnace lining.
|
ltem |
High alumina refractory castable |
|||
|
WMJ-1 |
WMJ-2 |
WMJ-3 |
||
|
maximum service temperature，℃ |
1400 |
1450 |
1500 |
|
|
Al2O3，% ≥ |
60 |
65 |
70 |
|
|
Bulk Density，g/cm3 ≥ |
110℃×24h After drying |
2.40 |
2.60 |
2.80 |
|
Cold crushing strength，Mpa ≥ |
110℃×24h After drying |
55 |
60 |
65 |
|
1000℃×3h After burning |
80 |
90 |
100 |
|
|
Bending Strength，Mpa ≥ |
110℃×24h After drying |
7 |
8 |
9 |
|
1000℃×3h After burning |
9 |
11 |
13 |
|
|
Permanent Linear change，% |
1000℃×3h |
±0.3 |
±0.3 |
±0.3 |
|
Thermal Shock Stability，times ≥ |
1000℃, water-cooling |
20 |
20 |
20 |
