| Customization: | Available |
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| Application: | Reverberatory Furnace |
| Material: | Alumina Block |
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High alumina brick is a kind of refractory material, the main component of this kind of refractory brick is AL2O3.
If the Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent.In China, according to the content of Al2O3 in high alumina bricks, it is usually divided into three grades: Grade I--Al2O3 content>75%; Grade II--Al2O3 content is 60~75%; Grade III--Al2O3 content is 48~60%.
The production process of high-alumina bricks and multi-clinker clay bricks is similar. The difference is that the proportion of clinker in the ingredients is higher, which can be as high as 90~95%. The clinker needs to be classified and screened before being broken. Higher, such as I, II and other high alumina bricks are generally 1500~1600 ºC when fired in tunnel kiln.
High Alumina Refractory Bricks
1. High refractoriness;
2. High temperature strength;
3. High thermal stability;
4. Neutral refractory;
5. Good resistance to acid and basic slag corrosion;
6. High refractoriness under load;
7. High temperature creep resistance;
8. Low apparent porosity;
Standard sizing: 230 x 114 x 65 mm ,Special size and OEM Service also provide!
The size is precise, providing kinds of shapes according to customer's drawing
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High Alumina Refractory Brick Physical and Chemical Index:
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Item
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Properties
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RS-80
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RS-75
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RS-65
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RS-55
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RS-48
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Al2O3 (%)
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80
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≥75
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≥65
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≥55
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≥48
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Refractoriness (°C )
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≥1790
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≥1790
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≥1790
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≥1770
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≥1750
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Bulk density (g/cm3)
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2.65
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2.5
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2.45
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2.4
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2.3
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Softening temperature under load (°C )
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1530
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≥1520
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≥1500
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≥1470
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≥1420
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Reheating Linear changes Rate (%)
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1500°CX2H
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0.1
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0.1
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0.1
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0.1
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0.1
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1450°CX2H
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-0.4
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-0.4
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-0.4
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-0.4
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-0.4
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Apparent porosity (%)
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22
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≤23
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≤23
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≤22
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≤22
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Cold crushing strength (Mpa)
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55
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≥50
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≥45
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≥40
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≥35
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Application
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steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace,blast furnace and reverberatory furnace.
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Packaging : Packed by sea-worthy wooden pallet + shrink wrapped + carton For example, Standard size of Fireclay brick : 230x114x65mm Shipping : 384pcs/plt x 18plts in one 20 feet container;
ZHENGZHOU RONGSHENG REFRACTORY CO., LIMITED has 30 years of experience in R & D and design of unshape refractory experts, holds 20 utility model patents and 7 invention patents, and has passed the ISO quality, environment and safety management system certification. The company is committed to the R & D, production and service of refractories used in metallurgy, electric power, nonferrous metals, building materials, chemical industry and other industries. Its products cover 198 kinds of materials and 2369 varieties in three categories (acidic, neutral and alkaline), providing overall solutions for refractories for 1200 domestic and 200 foreign customers.
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