ISO Certificated Low Na2O White Corundum/White Fused Alumina Grain with Al2O3 99.2 min

ISO Certificated Low Na2O White Corundum/White Fused Alumina Grain with Al2O3 99.2 min System 1

ISO Certificated Low Na2O White Corundum/White Fused Alumina Grain with Al2O3 99.2 min

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Packaging & Delivery

Packaging Detail:	1) 25kg woven bag 2) 25kg paper bag 3)1000kg big bag 4) According to clients' requirement.
Delivery Detail:	Within 30 days or depend on the requirement of clients.

Specifications

White Fused Alumina grain with Al2O3 99.2 min
ISO9001 Certificated
Strong wear and heat resistance

1. Advantage

White fused alumina is made of quality alumina powder by smelting at 2050 °C.

1). High purity

2). Good self-sharpening

3). Less thermal diffusivity in grinding

4). Strong acid-alkali resistance

5).Excellent high-temperature stability,

6). Low porosity, etc

2. Available Size:

Refractory grade:

12-6mm 10-8mm 8-5mm 5-3mm 3-1mm 1-0mm 1-0.5mm 0.5-0mm 0.3-0mm....

80F 100F 120F 150F 180F 200F 240F 270F 320F/325F...

Abrasive Grade:

F8 F10 F12 F14 F16 F20 F24 F30 F36 F40 F46 F60 F80

F100 F120 F150 F180 F220

3. Applications :

A.The abrasive tools: grinding high carbon steel, high-speed steel and chilled steel.

B. Lapping and polishing medium

C. Crucible

D.Steel ladle

E. Catalyst carrier

F. Special ceramics and super refractory materials.

4. Physical Index:

Color	White
True Density	3.96g/cm3
Bulk Density	1.75-1.95g/cm3
Microhardness	HV2200-2300
Mohs Hardness	9.0
Melting Point	2250°C

5. Chemical Composition

Typical Value:

Al2O3	99.5%
Na2O	0.25%
Fe2O3	0.04%
SiO2	0.03%

Abrasives Grade:

Grit Size	Al2O3	Na2O
F12-80	>99.22%	<0.35%
F100-240	>99.0%	<0.4%

Refractory Grade

Grit Size	Al2O3	Na2O
0-1mm	>99.22%	<0.35%
1-3mm	>99.3%	<0.3%
3-5mm	>99.3%	<0.3%
200mesh	>99.0%	<0.4%
325mesh	>99.0%	<0.4%

ISO Certificated Low Na2O White Corundum/White Fused Alumina Grain with Al2O3 99.2 min

Q:What refractory materials are used in power plant: Vacuum mud machine, sintering furnace! And then I will introduce some application of thermal material in power plant (below) I hope I can help you. Energy saving is the trend of future industrial development efforts, grinding machine, conveyor belt, so the production of light thermal insulation materials will gain state support, drying kiln. Our factory mainly produce light thermal insulation brick. The refractory material we use most is light insulation brick, and the equipment used is sand mixer (Luohe, Henan)

Q:What is shapeless refractory with high performance?: The popular ones are: Non-cement fine powder bonded castable is a functional refractory castable with nano material introduced.

Q:What refractories are resistant to fluorine gas?: It is recommended to use fused-quartz brick, which will produce hydrofluoric acid fluorine (an acidic gas) when water vapors. It is cheap. While it is recommended to use silica?brick if it exceeds 1,200 degrees. So acidic refractory is an advisable refractory for using. It works well if the temperature is below 1200 degrees.

Q:Who knows about roof fireproofing materials?: At present, only phenolic foam boards can meet requirements. The test temperature can be 2,000 degrees, and there is no molten droplet during the tests and it can maintain integrity. heat conductivity coefficient: 0.03W / (mk), non-combustible, non-toxic, smokeless!

Q:What's the requirements of fire-fighting criteria of heat insulating material?: It shouldn't be under than B2 level. Roofing insulation fire rating requirements: the ministry of public security, housing and urban-rural development department issued about printing and distributing the civil building external thermal insulation system and the interim provisions on the exterior wall decorative fireproof prescribed in the notice: roof grassroots adopted duration of fire resistance is the non-combustible component that shouldn't less than 1.00 h's. Its roof insulation materials should not be below B2; Otherwise, the combustion performance of insulating material should not be below the B1 level. The junction of the roof and wall, the insulation layer around the opening part of roof should use the grade A thermal insulation material to set level fire-fighting belt that width is not less than 500 mm.

Q:How to divide fire rating of decorating materials ?: I am very happy to answer this question for you. It can be divided into Level A: noninflammability; B1: difficult-flammability; B2: combustibility; B3: inflammability. I hope my answer is helpful to you, thank you.

Q:How can refractory material of the electric furnace be used for longer.: Minimize mechanical shock, Electrical furnace commonly referred to must be electrical arc furance. The wall of electric arc furnace should be constrcuted with magnesite carbon brick. Its hearth permanent layer should be constrcuted with mansornary magnesia brick. High alumina brick is usually used to aviod furnace cover suddenly get hot and cold. But its service life is lower. At present integral casting furnace cover is made of alumina magnesia. Terminal will be created even without the use of refractory material. Consumption is much faster if using refractories material or whole knottiing mainly.

Q:How is refractory material made?: It is made from yellow mud and water.

Q:How to make the service life of refractory materials longer?: Take acid resistant refractory materials as example: the atmosphere should be acidic atmosphere, if used in an environment whose temperature is 1900℃, it would exacerbate the loss of refractory materials, so don’t use overloaded. Second, select the appropriate refractory materials according to the environment. For example, if its operating temperature is 1800℃, generally speaking, the normal use of it according to the instruction of refractory materials would be fine.

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