Good Thermal Shock Resistance JM32 K23 JM23 Insulation Brick
Light Weight Insulating Mullite Firebrick also known as mullite lightweight insulating firebrick of high purity refractory powder, according to product requirements proportion, adding organic composite filler, the vacuum extrusion molding, high temperature sintering refractory insulation mullite insulating brick .In the main phase of mullite alumina, alumina content in general 65% ~ 75%.A high degree of fire resistance, up to 1790 degrees celsius. Load softening temperature 1600 ~ 1700 degrees to start. Room temperature compressive strength of 70 ~ 260MPa. Good thermal shock resistance. The sintered mullite and fused mullite brick two .
a) According the made method, it can be divided into burnt brick, unburned brick, and electric smelting brick.
b) According the shape and size, it can be divided into standard brick, general brick and abnormal shape brick.
c) According the content of the Al2O3, it can be divided into fire clay brick and high alumina brick.
| item | DLG180-1.5L | DLG170-1.3L | LG160-0.8L | LG150-0.8L | LG140-0.7L | LG125-0.5L |
| Al2O3 % | ≥90 | ≥72 | ≥60 | ≥55 | ≥50 | ≥48 |
| Fe2O3 % | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 |
| Bulk Density ( g/cm3) | ≤1.5 | ≤1.3 | ≤1.0 | ≤0.8 | ≤0.7 | ≤0.5 |
| Cold Crushing Strength (MPa) | ≥9.5 | ≥5.0 | ≥3.0 | ≥2.5 | ≥2.0 | ≥1.5 |
| Linear Change on Reheating | ≤1% | 1800 | 1700 | 1600 | 1500 | - | - |
| ≤2% | - | - | - | - | 1400 | 1250 |
| Thermal conductivity(350±25)℃ (W/mK) | ≤0.8 | ≤0.6 | ≤0.4 | ≤0.35 | ≤0.3 | ≤0.2 |
Advantages :
1). Excellent insulation ,security , long working life .
2). Precise grinding and polishing.
3). Excellent heat radiation, small size ,more environmental and energy-efficient .
4). good thermal conductivity
5). large specific heat capacity
6). low pressure drop
7). good heat-shock resisting ability
8). Working temperature: 600℃-1200℃
Application :
1). Gas cooker,Water heater,Gas oven, Gas boiler,Air-conditioning and so on.
2). As ceramic parts of flexible pad and channel heaters at operations of pre and postweld heat treatment; Welding process, stress-relieving, pre-heating & post heating, other resistance-heating environment
3). halogen lamps, high and low pressure uv lamps, mercury lamps, uv lamp holders and heating tubes.
4). high-power electrical applicance and all kinds of insulation device.
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