Insulating Fire Brick ranges a wide temperature 2300F-2600F-2800F-3200F, they are widely used in many kinds of industrial furnace insulating linings.
Mullite Insulating Firebricks Characteristics and Advantages:
1. Lower content of iron, alkaline and impurities, good high temperature properties.
2. Homogeneous structure, light weight, energy saving because lower heat storage in the furnace during cooling cycles.
3. High strength, good thermal shock resistance under high temperature.
4. Precise sizes due to grinding and shaping after sintering, which meets the requirement of construction.
5. Max service temp: Up to 1730C
NR Heat Insulating brick is in accordance with ISO9001 Standard.
Typical Application
1) Lining of high-temperature kilns of industrial ceramics, industrial furnaces under 1650C of petrochemical, metallurgy and machinery industries
2) Lining of hot-surface of industrial furnaces as carbon furnace, cracking furnace, heating furnace for oil refining, roller kiln, tunnel kiln.
3) Back lining insulating layer of industrial furnace as glass tank kiln.
4) Atmosphere furnace.
|
Index /brand |
NR-23 |
NR-26 |
NR-28 |
NR-30 |
NR-32 |
Classification
temperature/º C |
1260 |
1430 |
1540 |
1650 |
1760 |
|
Bulk density g/cm 3 |
0.58 |
0.80 |
0.89 |
1.03 |
1.25 |
|
Moudulus of rupture MPa |
0.9 |
1.3 |
1.5 |
1.7 |
2.0 |
|
Cold crushing strength MPa |
1.2 |
1.9 |
2.6 |
2.8 |
3.4 |
|
Permanent Liner Change % C xHr |
-0.1 |
-0.5 |
-0.8 |
-0.9 |
-0.9 |
|
1230X24 |
1400x24 |
1510x24 |
1620x24 |
1730x24 |
|
|
|
|
|
|
|
Thermal conductivity
(W/m. k) |
400 C |
0.17 |
0.24 |
0.30 |
0.40 |
0.49 |
|
600 C |
0.19 |
0.27 |
0.32 |
0.42 |
0.50 |
|
800 C |
0.22 |
0.30 |
0.35 |
0.44 |
0.51 |
|
1000 C |
0.25 |
0.32 |
0.38 |
0.45 |
0.53 |
|
1200 C |
|
0.35 |
0.39 |
0.47 |
0.55 |
|
Al2O3 % |
45 |
55 |
65 |
72 |
76 |
|
Fe2O3 % |
0.7 |
0.8 |
0.7 |
0.5 |
0.4 |
|
SiO2 % |
50 |
42 |
33 |
26 |
22 |
|
TiO2 % |
1.2 |
1.3 |
0.9 |
0.5 |
0.3 |
|
CaO+ MgO % |
0.7 |
0.6 |
0.2 |
0.3 |
0.2 |
|
K2O+ Na2O % |
1.3 |
1.1 |
0.8 |
0.2 |
0.1 |
North Refractories Co. Ltd (NRCL) was founded by Mr Sun from 15 years ago and from the year 2007 we started our exporting business via our sales company Beijing North Refractories Co. Ltd, we focus on refractory and heat insulation materials manufacturing, serving for wide range industries where high temperatures exist. Such as steel & iron, aluminum, glass industry, ceramics, power plant, petrochemical, foundry industries and so on.
Main product list:
CALCIUM SILICATE INSULATION MATERIALS: Calcium silicate pipe section, calcium silicate 650C, calcium silicate 1000C, calcium silicate block 1100C, super calcium silicate, high density calcium silicate insulation shapes, non-wetting calcium silicate, water proof calcium silicate board, carbon fiber reinforced calcium silicate, glass fiber reinforced calcium silicate.
CERAMIC FIBER INSULATION: Ceramic fiber blankets, ceramic fiber boards, ceramic fiber modules, ceramic fiber bulk, ceramic fiber papers, ceramic fiber felt, ceramic fiber top out cone, ceramic fiber special shapes, ceramic fiber binders, ceramic fiber coatings.
ECO FIBER INSULATION MATERIALS: Soluble fiber blankets, soluble fiber board, soluble fiber paper
REFRACTORY BRICKS: High alumina refractory bricks, SiC bricks, Fused Cast Refractory Bricks.
