High Quality Alumina Bubble Insulation Refractory Brick for Down-draft Furnace
The Description:
Alumina hollow sphere is a new kind of high temperature heat insulation material, it is made of industrial alumina in electric furnace melting and blowing, crystal type A-al2o3 microcrystals. Alumina hollow ball as the main body, can be made into various shapes of products, the highest use temperature of 1800ºC, the product mechanical strength is high, several times of the general light products, and the bulk density is only half of corundum products. It has been widely used in high temperature and ultra-high temperature kilns such as gasifier in petrochemical industry, carbon black industrial reactor and induction furnace in metallurgical industry, and has achieved very satisfactory energy-saving effect.
The Physical and Chemical Index of High Quality Alumina Bubble Insulation Refractory Brick for Ceramic Kiln
Item |
Bubble Al2O3 |
Bubble ZrO2 Brick |
BA-85 |
BA-90 |
BA-99 |
BZ-98 |
Max service temperatureºC |
1680 |
1700 |
1800 |
2200 |
Al2O3 % |
85 |
90 |
99 |
--- |
ZrO2 ≤ |
--- |
--- |
--- |
≥98 |
SiO2 ≤ |
13 |
8 |
0.2 |
0.2 |
Fe2O3 ≤ |
0.2 |
0.2 |
0.2 |
0.2 |
Density kg/m3 |
1.4-1.7 |
1.4-1.7 |
1.4-1.7 |
≤3.0 |
CCS Mpa |
12 |
10 |
9 |
8 |
RUL ºC ≥ |
1650 |
1700 |
1700 |
1700 |
PLC 1600ºC*3h |
±0.3 |
±0.3 |
±0.3 |
±0.2 |
Thermal expansion%≤ |
7.8 |
8 |
8.6 |
9.1 |
Thermal conductivity(w/mk) |
0.8 |
1.3 |
1.5 |
0.3 |
Product feature:
Alumina hollow ball brick is a light refractory material made of refractory hollow ball, used in the manufacture of high temperature furnace tube, tray, protective cover. Hollow brick has low apparent porosity, small thermal conductivity, good thermal shock resistance, high temperature structure strength, can be directly masonry in contact with the flame of high temperature furnace lining, and the manufacture of high temperature furnace tube, tray, protective cover, etc. The common hollow brick has alumina hollow brick and zirconia hollow brick.
Company main products and profiles:
Why choose us?
Zhengzhou Kaiyuan Refractories Co., Ltd is a manufacturer of silicon-aluminum refractory (fireclay brick, high alumina brick, silica brick, mullite brick, corundum brick, insulation brick, castable, mortar) for coke oven, blast furnace, hot blast stove, heating furnace, anode baking furnace, boilers and other industrial furnaces for 20 years located in Henan, China.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
We have test equipment for the following items:
chemical %
bulk density
apparent porosity
cold crushing strength
modulus of rupture
refractoriness under load
creep
thermal expansion
Reheat linear change
thermal shock resistance
thermal conductivity
Contract Kiln Construction
FAQ
1. Are you a Manufacturer or trader?
A: We are manufacturer and our plant is located in Xinmi city, Henan, China
2. Can we visit your company?
A: You are warmly welcome to visit our company at anytime, you'll not regret of the visiting.
3. Do you accept OEM?
A: Yes, we do OEM.
4. What's the MOQ of trial order?
A: We care about all the potential customers and take all the trails orders.
5. What is the payment term?
A: TT, LC, DP, DA.
6. How long is the delivery time?
A: Usually within 35 days after down payment.
7. Do you accept third party inspection ?
A: Yes for sure, we accept the third party inspection before delivery.
8. What is your after-sell service?
A: The rejected goods can be replaced or we can make compensation for it. We can send technical engineers to the end user for technical issue.
9.What is your company's certification?
A: ISO9001 certificate