Basic Info.
Refractoriness (℃)
1580< Refractoriness< 1770
Feature
Long Time Materials, Fireproof
Customized
Can Be Customized
Bulk Density
2.20~2.65/Cm3
Trademark
Xinhongji Refractory
Transport Package
Pallet, Wraped with Plastic Film & Bundle
Specification
standard / Customized
Product Description
Product Description
Introductions
High-alumina refractory bricks are made from bauxite or kaolinitic clays. The definition of high-alumina refractory bricks contains between 50 and 87.5 percent alumina. They are much more complicated and tougher than fireclay refractories at high temperatures and in basic environments. In addition, high-alumina refractory bricks exhibit better volume stability and abrasion resistance. High-alumina bricks are used in blast furnaces, blast-furnace stoves, liquid-steel ladles, etc.
The high alumina bricks are basically divided into three grades as per the amount of Al2O3 they contain. These are
Grade I which provides for Al2O3 in the range of 75~81%
Grade II which provides for Al2O3 in the range of 60~75%
Grade III which provides for Al2O3 in the range of 48~60%
Top Grade which provides for Al2O3 in the range of 82~89%
Properties of High Alumina Bricks
The high alumina bricks are basically perfect and advanced refractory materials having very high refractoriness up to 1750~1790, which is much higher than that of fire clay bricks and semi-silica bricks obviously.
The high alumina bricks are very durable and well-designed to be used in high-temperature areas such as blast furnaces.
The high alumina bricks are usually constructed with higher refractoriness and low impurities.
These bricks include more Al2O3 content than that of other ones in the same category and hence can also be referred to as neutral refractory material having resistance to acid and basic slag erosion.
Along with Al2O3 these bricks also comprise SiO2 content which enhances the resistance to acid slag erosion much more.
Chemical Composition (wt%) | Apparent Porosity (%) | Bulk density (g/cc)Min. | CCS (kg/cm2) | PLC (%) | PCE (0C/OC) Min. | RUL (Ta0C) | Application Area |
|
Al2O3 | Fe2O3 | | | | | | |
44-48 | 1.2-1.5 | 14-18 | 2.35 | 450-700 | -0.5 to 0.2 at 14500C/2h | 1743/33 | 1460-1500 | Blast Furnace, Preheating Zone of Cement Rotary Kiln, Lime Kiln & Glass Tank Furnace. |
52-55 | 2.9-3.9 | 17-22 | 2.35 | 450-650 | -0.5 to 1.0 at 14500C/2h | 1743/33 | 1400-1440 | Preheating Zone of Cement Rotary Kiln & Reheating Furnace Wall. |
57-60 | 3.4-4.2 | 17-22 | 2.35 | 550-800 | -0.4 to 2.0 at 14500C/2h | 1785/35 | 1420-1450 | Reheating Furnace Wall, Burning Ladle Back up. |
61-63 | 1.2-1.7 | 14-18 | 2.40 | 500-800 | ±0.8 at 15000C/2h | 1785/35 | 1500-1530 | Blast Furnace Stove Checkers, Solid Wall Bricks & Glass Tank Furnace. |
61-64 | 1.2-1.5 | 13-16 | 2.42 | 600-900 | ±0.5 at 15000C/2h | 1804/36 | 1500-1550 | Blast Furnace Hearth, Non-Recovery Coke Oven, Glass Tank Furnace & Frit Furnace. |
67-70 | 3.4-4.0 | 17-22 | 2.45 | 600-900 | 0.3 to 2.5 at 14500C/2h | 1804/36 | 1460-1480 | Boiler, Cupola, Steel Foundry & Reheating Furnace. |
71-75 | 2.8-3.5 | 17-22 | 2.60 | 600-900 | 0.3 to 3.0 at 15000C/2h | 1804/36 | 1470-1490 | Blast Furnace Hearth, Lime Kiln, Glass Tank Furnace & Non-recovery Coke Oven. |
77-80 | 2.2-2.7 | 17-22 | 2.70 | 700-900 | -0.5 to 2.5 at 15500C/2h | 1820/37 | 1490-1520 | EAF Roof, Steel Rolling Mill, Steel Ladle & other high heat duty special applications. |
82-85 | 1.4-1.8 | 15-19 | 2.80 | 750-1000 | -0.3 to 1.0 at 15500C/2h | 1850/38 | 1540-1580 | Special high temperature, high abrasion & spalling resistant applications like Torpedo Ladle etc. |
86-89 | 1.0-1.8 | 44911 | 2.85 | 900-1200 | -0.2 to 0.5 at 15000C/2h | 1820/37 | 1580-1620 | Reheating Furnace Bottom (specially Coal-fired). |
Characteristic as follows:
A) Refractoriness; high alumina bricks refractoriness is higher than clay and semi-silica brick refractoriness up to 1750 ~ 1790 ºC, belonging to high-grade refractory.
B) load softening temperature; high aluminum products because of high Al2O3, less impurities, less fusible vitreous formed, so load softening temperature is higher than the clay brick, but not formed mullite crystalline, so load softening temperature silica brick is still not high.
C) slag resistance; Al2O3 in alumina bricks are closer to neutral refractories, resistant to erosion of acid and alkaline slag, because it contains SiO2, so resistance to alkaline slag ratio of acid slag ability is weaker.
Packaging
Our Refractory Alumina Bricks are carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Normally we will adopt wooden pellets, wrapped with plastic film and bundled with belts.
FAQQ: Are you a trading company or a manufacturer?A: We are a Manufacturer, and our factory is located in Xinmi, Zhengzhou City, Henan, China, please don't worry about the lead time & the quality, we have hundreds of skilled workers and complete QC systems & teams.Q: When can I get the price?A: The quotation can be offered within half of the day after we get your detailed requirements, including size, quantity, parameters, etc. for any urgent orders, you can call us directly, and the quotation can be available within 1 hour.Q: What about the lead time for mass production?A: The lead time is based on the ordered quantity, normally it will be 7-21 days.
Address:
Fl3, Building No 4, East Area of Henan Province National Universities High Technology Park, Zhengzhou, Henan, China
Business Type:
Manufacturer/Factory
Business Range:
Chemicals, Construction & Decoration, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Service, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, QC 080000, GMP
Company Introduction:
Henan Xinhongji Refractory Material Co., Ltd. Is founded in 2018, we are a high-temperature kiln overall solution service provider integrating R&D, production, kiln solutions, and engineering construction. Our company′s headquartered is located in Zhengzhou and factory is located in Xinmi City, Henan Province China, with 700 employees, including 22 professional and technical personnel. Our factory has two alumina series refractory production lines and two aluminum-silicon series refractory production lines, one silicon series production line, and one unshaped refractory material production line. The annual production capacity is ab. 150, 000 tons, including 80, 000 tons/year of aluminum-silicon series refractory bricks and 50, 000 tons/ton of unshaped refractory materials.
Our products are widely used in iron & steel, cements, non-ferrous metals, glass, petrochemical, ceramics and other relative industries. The main products are clay bricks, high alumina bricks, silica bricks, mullite bricks, andalusite bricks, corundum bricks, sillimanite bricks, silicon carbide bricks, phosphate bricks, cordierite bricks, thermal insulation bricks, castables, mortar, ramming mix, etc. The products sell well domestic and are exported to many overseas countries (France, Germany, Spain, Austria, Russia, Uzbekistan, Egypt, Bahrain, United Arab Emirates, India, Japan, South Korea, Indonesia and Philippines etc. ).
The development of our company is inseparable from our friends. Xinhongji people will adhere to the philosophy of "honesty and value" and the business philosophy of "integrity, value, service and innovation", and will continue to improve our products & our services. Extensive and in-depth cooperation, to create a better future.