$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 1$
$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 2$
$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 3$
$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 4$

$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O)$

$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 1$

$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 2$

$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 3$

$Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O) System 4$

Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O)

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Packaging & Delivery

Packaging Detail:	25kg bag or ton bag or as your requirement.
Delivery Detail:	within 20 days delivery after receipt of advance payment.

Specifications

99% high purity abrasive White fused alumina for refractory
1.White fused alumina99%
2.Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm

Products discription

1.Introduction

The main raw material of white fused alumina is high grade processed alumina, which is fused with the carbon material and scrap iron in the electic furnace under the high temperature of above 2200°C.The product is characterized by low expansion coefficient, high refractoriness, good thermal and chemical stability.

2. Grain size commonly used

Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm ,200#-0, 325#-0.
Abrasives: F24-F60.
Sandblasting abrasive:F10-F240.
Precision casting: F80-100, F100-F120.
Ceramic & electronic polishing:F240-800.

3.Physical properties of White Fused Alumina

Item	Color	Color System	Mohs Hardness	Melting Temperature(°C)	Refractory Temperature(°C)	True Density( g/cm3)	Magnetic Material
Specification	white	trigonal system	min10	2250°C	1900°C	min3.50	max0.003%

Item

Color

Color System

Mohs Hardness

Melting Temperature(°C)

Refractory Temperature(°C)

True Density( g/cm3)

Magnetic Material

Specification

white

trigonal system

min10

2250°C

1900°C

min3.50

max0.003%

4.Chemical index of White Fused Alumina

Purpose	Specification		Chemical composition(%)				Magnetic material content(%)
			Al₂O₃	Na₂O	SIO₂	CaO
For abrasive	F	12#—80#	min99	max0.6		max0.4	max0.003
		90#—150#	min98.5				max0.003
		180#—240#	min98.2	max0.7		max0.4	max0.002
For refractory	Size sand	0—1mm	min99	max0.5		max0.4	max0.003
		1—3mm
		3—5mm
		5—8mm
	Fine powder	200#—0	min98.5	max0.5		max0.5	max0.003
		325#—0

WE CAN ALSO DO NA2O:0.3% MAX IF CLIENT SPECIAL NEED.

$white fused alumina for refractory 99.2% NA2O 0.3%$

Q: What is streaming fireproof material?: Streaming fireproof material is castable refractory that can flow and degas without virbration, which is suitable for thin-wall or places that cannot be molded by vibration because of complex shapes. Well, appropriate amount of water is necessary for it. Its characteristic goes that it can be cast into various shapes of construction body without virbration and it will not reduce or not significantly reduce the performance of castable at the same time.

Q: How to detect the acid resistance of refractory? Is there any standard? Thank you: Setting the acid resistancere of fractory products is simple; R22, two measurement methods are both bricking refractory products, using the mass fraction of the original dry to indicate. It is generally select vitriol as the medium of erosion, such as the international standard determination of the resistance to sulfate of dense shaped refractory products "(ISO8890) and PRE /, grinding fine particles to 0.63 ~ 0.80 mm, and then measure its quality loss, put it in the vitriol with mass fraction of 70%, finally boil 6 h.

Q: Concrete composition and function of magnesia bond used in refractory: Mainly high purity magnesia powder and silica fume, in accordance with the 4:1 ratio of the mixture, that is, we often use in the castable MgO-SiO2-H2O binding system! Compared with cement, the content of CaO is lower, the high temperature strength of the product is increased, and the slag corrosion resistance of the product is increased!

Q: who knows the uses of refratories?: Of course, the role of the refractory material is fireproof, generally used in large buildings. It can reduce casualties and economic losses caused by the fire. it also can be used on the chemical instruments. ! !

Q: What kind of materials can be tested their electrical resistivity in the current refractory industry?: fused cast bricks, fused zirconia corundum blocks, corundum, high zirconium

Q: What are fire?ratings of wall thermal insulation material?: Grade A material has no ignition and is material with thermal insulation effect, anti-combustion material. Currently it mainly refers to inorganic thermal insulation mortars of vitrified micro bead, hole-closed?expanded perlite, rock wool,mineral wool,glass wool,cement base or gypsum base, inorganic thermal insulation mortars and self thermal insulation system of lightweight block. Grade B1 is nonflammable thermal insulation material, which is determined by fire endurance of this material. In addition, the division of the material of different parts is different! What is commonly seen, such as EPS / XPS insulation boards adding flame retardant through special treatment. Grade B2 is combustible thermal insulation materials, and what is commonly seen is EPS expanding polystyrene board and XPS extruded polystyrene board, that is, the general board. This material has low ignition point, and releases large amounts of harmful gases in the combustion process . Grade B3 is flammable insulation material. Thermal insulation material with polyphenyl foam as main material is commonly seen. Since this material is highly flammable, it has been eliminated external wall thermal insulation materials.

Q: How many external wall thermal insulation fireproof material are there: Class A exterior wall insulation: Rock wool, glass wool, silicate, aluminum silicate, calcium silicate, phenolic foam, foam glass

Q: What are the materials used in refractory material processing?: Refractory materials generally refer to inorganic non-metallic materials with a refractoriness of more than 1580 degrees. It includes natural ore and a variety of products made by a certain process according to certain requirements. It has certain high temperature mechanical properties and good volume stability. It is the necessary material for all kinds of high temperature equipment. Ordinary refractories are often used brick, semisilica brick, clay brick, high alumina brick, magnesia brick etc..

Q: Who knows about the B-level fireproof insulation materials?: Organics, extruded sheet, polyphenyl board and phenolic resin. The fireproof?performance of sea capacity module (fireproof and thermal insulation material) is B1-level with the heat conductivity coefficient of only 0.028w / m · k. It is a good choice. A-level: Rock wool, glass wool, silicate, aluminum silicate, calcium silicate, phenolic aldehyde, and foam glass. B-level: Rubber and plastic, extrusion molding, polyphenyl, PEF.