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Lightweight White 0.8 MgO Mullite Insulating Brick for HBS
Lightweight White 0.8 MgO Mullite Insulating Brick for HBS for special ceramic sintering furnace lining, mainly based on aluminum silicate-based refractory materials, with some excellent performance, (especially high temperature creep performance) living in natural raw materials production Of the high aluminum products first.
Lightweight White 0.8 MgO Mullite Insulating Brick for HBS for special ceramic sintering furnace lining,Mullite composition AL203 in about 79%, Si02 in 21% is more appropriate, but there are a certain amount of raw materials in the impurity composition, at high temperatures will cause the composition of the composition, so as the impurity composition increases, will make vitreous and corundum And the molybdenum is formed into coarse grain structure, which makes the porosity of the product increase, the thermal shock stability and corrosion resistance are reduced, and cracks are likely to occur.
Lightweight White 0.8 MgO Mullite Insulating Brick for HBS for special ceramic sintering furnace lining ccording to the different use of temperature production of multiple grades of mullite lightweight insulation brick is divided into WAM23 / WAM26 / WAM28, the use of temperature range from 1100C-1650C, the ratio of each product is specially designed to meet the different thermal and Physical requirements.
| 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 | |
Performances:
1. Low heat conductivity, with good thermal insulation effect
2. Low hot melting, due to low heat conductivity, it accumulates little heat to get obvious energy-saving in intermittent operation.
3. Low impurity content and low content of iron oxide & alkali metal oxide realize high refractoriness. High Al2O3 content makes it keep good performance under reducing atmosphere.
4. High thermal compressive strength
5. Accurate size increases construction speed, decreases fire clay usage, ensures strength and stability of masonry, prolongs the life span of lining.
6. It can be processed into special shapes to reduce brickwork amount and paving seam.
Applications:
Generally suitable for thermal surface refractory lining or other refractory back lining insulation layer.
Refractory lining or thermal insulation for industrial furnaces in petroleum or chemical industries, such as ethylene cracking furnaces, tubular furnaces, reforming furnaces for synthetic ammonia, gas generators and high temperature shuttle kilns.
Tunnel kiln, push board kiln, roller kiln, wood kiln refractory lining material for industrial and household ceramics.
