High Thermal Conductivity Fire Clay Refractory Brick Manufacturers for Cement Kiln
Feature:
Al2O3 content is ≥38%.
Main mineral components are corundum and mullite phases.
Refractoriness is usually 1580°C-1770°C,refractoriness under load is 1300-1400°C.It is a neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion.
Application:
Non-ferrous Metal industry:Smelting furnace,refining furnace,reverberatory furnace, converter furnace.
Building materials industry:Cement kiln,glass kiln,ceramic kiln,lime kilns,kiln car,tunnel kiln
Technical Index:
| Item |
Chamotte Brick for Carbon Furnace |
| N-1 |
N-2a |
N-2b |
N-3a |
N-3b |
N-4 |
N-5 |
N-6 |
| Al2O3 % |
≥42 |
≥40 |
≥40 |
≥40 |
≥40 |
≥38 |
-- |
-- |
| Refractoriness ℃ |
≥1750 |
≥1730 |
≥1730 |
≥1710 |
≥1710 |
≥1690 |
≥1670 |
≥1580 |
| Refractoriness Under Load,℃,[0.2MPa×0.6%] |
≥1400 |
≥1350 |
-- |
≥1320 |
-- |
≥1300 |
-- |
-- |
| Permanent Linear Change, % |
1400℃×2h |
+0.1
-0.4
|
+0.1
-0.5
|
+0.2
-0.5
|
-- |
-- |
-- |
-- |
-- |
| 1350℃×2h |
-- |
-- |
-- |
+0.2
-0.5
|
+0.2
-0.5
|
+0.2
-0.5
|
+0.2
-0.5
|
-- |
| Apparent Porosity % |
≤22 |
≤26 |
≤24 |
≤24 |
≤26 |
≤24 |
≤26 |
≤28 |
| Cold Crushing Strength, MPa |
≥30.0 |
≥20.0 |
≥25.0 |
≥20.0 |
≥15.0 |
≥20.0 |
≥15.0 |
≥15.0 |
Manufacturing Process Flow:
First, qualified raw materials enter to our raw materials warehouse
Second, all materials including fine powders, aggregates, binding agent are batched according to the technical agreement.
Third, finished raw materials is shaped by 630 tons pressure machine or 2500 tons automatic hydraulic pressure machine.
Forth, green bricks is dried in the dry kilns between 40℃ and 120 ℃, and then sintering in high temperature according to the firing curve.
Last, check the quality of finished refractory bricks and qualified products are packed as request.
