Free Sample Refractory Bricks 70 Alumina Fire Brick High Alumina Bricks Manufacturer

• Customization: Available
• Application: Blast Furnace, Cement Kiln, Ceramic Kiln, Chemical Kiln, Glass Kiln, Steel-Making Furnace
• Material: High Alumina
• Model NO.: 40/55/60/70 High Alumina Bricks
• Refractoriness (℃): 1770< Refractoriness< 2000
• Name: High Alumina Bricks
• Feature1: High Temperature Strength
• Feature2: High Thermal Stability
• Feature3: High Refractoriness Under Load
• Refractoriness: More Than 1770ºC
• Raw Material: Alumina-Silicate Refractory Material
• Al2O3 (%): ≥48
• Application1: Blast Furnaces
• Application2: Hot Blast Stove
• Application3: Steel Ladle Lining
• Application4: Reheating Furnace
• Application5: Cement Kiln
• Application6: Tunnel Kiln
• Application7: Boiler
• Catelogue: Refractory Brick
• Transport Package: Packed in Water Proof Wooden Pallets
• Specification: 230× 115× 75mm
• Trademark: SSJD
• Origin: China
• HS Code: 69022000
• Production Capacity: 50000pieces/Year

Product Description

Product Description

High Alumina Brick
High alumina brick is a kind of alumina-silicate refractory material with content of alumina oxide more than 48%. It is calcined and formed by the raw material of banxite or the material with high content of AL2O3. High thermal stability, the refractoriness is more than 1770ºC.

1.High load softening temperature,
2.High temperature strength,
3.High thermal stability,
4.High refractoriness,
5.Good resistance to acid and basic slag corrosion,
6.High refractoriness under load,
7.High temperature creep resistance,
8.Low apparent porosity.

a. Refractoriness
The refractoriness of high-alumina bricks is higher than that of clay bricks and semi-silica bricks, reaching 1750~1790°C, which is a high-grade refractory material.
b. Load softening temperature
Because the Al2O3 in high alumina products is high, the amount of impurities is small, and the formation of fusible glass is less, the softening temperature under load is higher than that of clay bricks, but because the mullite crystallization does not form a network structure, the softening temperature under load is still not as high as that of silica bricks.
c. Slag resistance
There are more Al2O3 in high alumina bricks, which are close to neutral refractory materials, and can resist the erosion of acid slag and alkaline slag. Because it contains SiO2, the ability to resist alkaline slag is weaker than that of acid slag.

Technical Datas

High Alumina Refractory Brick Physical and Chemical Index:
Item		Properties
		A-80	A-75	A-65	A-55	A-48
Al2O3 (%)		80	≥75	≥65	≥55	≥48
Refractoriness  (ºC )		≥1790	≥1790	≥1790	≥1770	≥1750
Bulk density  (g/cm^3)		2.65	2.5	2.45	2.4	2.3
Softening temperature under load  (°C )		1530	≥1520	≥1500	≥1470	≥1420
Reheating Linear changes Rate (%)	1500°CX2H	0.1	0.1	0.1	0.1	0.1
	1450°CX2H	-0.4	-0.4	-0.4	-0.4	-0.4
Apparent porosity (%)		22	≤23	≤23	≤22	≤22
Cold crushing strength (Mpa)		55	≥50	≥45	≥40	≥35
Application		steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace, blast furnace and reverberatory furnace.

Application

High alumina brick is widely used for blast furnaces, hot blast stove,steel ladle lining, reheating furnace, cement kiln, tunnel kiln,boiler, coke oven, carbon furnace, glass kiln , steel smelting furnace and various kiln lining and thermotechnical equipment, etc.

Packaging & Shipping

Certifications

Company Profile

Rosewool Insulation Refractory Material Co., Ltd. was founded in the 1960s and is located in Zhengzhou, Henan Province, China. It is a comprehensive company integrating production, sales and construction.

1. 1 National R&D Institution: Peking University has a close cooperative laboratory relationship with us in product development and technology

2. 2 types: Our product range: insulation products, refractory products.

3. 5 certificates: ISO900, CE, SGS, TUV, BV, etc.

4. 23 years: Our export experience is more than 23 years.

5. 150,000 square meters: The total area of our factory.

Our value: To the quality strives for the survival, Energy saving cause parallel.