$Raw Materials for Refractory:Refractory Grade Brown Corundum Grains System 1$

$Raw Materials for Refractory:Refractory Grade Brown Corundum Grains$

$Raw Materials for Refractory:Refractory Grade Brown Corundum Grains System 1$

Raw Materials for Refractory:Refractory Grade Brown Corundum Grains

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

Brown Fused Alumina
1 Al2O3: 95.0%min
2 Good Hardness & Toughness
3 Higher compressive strength
4 Heat-resistant propert

Brown aluminium oxide/brown fused alumina is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials

Physical and chemical analysis for brown fused alumina:

Purpose	Specification			Chemical composition(%)
				Al2O3		Fe2O3		SiO2		TiO2
Refractory Grade	Size sand	0-1mm 1-3mm 3-5mm 5-8mm 8- 12mm	95min		0.3 Max		1.5 Max		3.0 Max		—
		0-3mm 0-5mm 0-10mm 0-25mm	95min		0.3 Max		1.5Max		3.0Max		—
	Fine powder	180#-0 240#-0 320#-0	94 Min		0.5 Max		1.5 Max		3.5 Max		—

Application

1. it are suitable for grinding high-speed,high carbon steel

2.high-grade refractory materials

3.abrasives tool

4.grinding and polishing

5.ceramics

6.LED

7.sandblasting

8.aviation

Packing

1.25kg woven bag,40 woven bags/jumbo bag.

2.25kg woven bag,40 woven bags/pallet

3.25kg paper bag,40 paper bags/pallet

4.25kg paper bag,40 paper bags/paper box

Advantages

1. ISO certificated manufacturer

2. since abrasives services in 1995

3. one-stop services

3.we have own import and export company and professional sales team

4.production capacity: 3500mt per month

payment

1.30%T/T in advance,70% against B/L Copy

2.L/C at sight

FACTORY:

$Refractory Grade Brown Corundum Grains$

Q: For refractory, what is critical particle size? Thank you.: 0

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: What does the function of SiC for refractories?: Silicon carbide for machine non-metallic materials with high temperature wear characteristics of silicon nitride bonded silicon carbide ceramic cups and other products in a blast furnace ladle brick aluminum silicon carbide as an antioxidant added MgO-C

Q: What's the organzational structure of refractory material?: Ingredients (harmful); phase composition. The main components of refractory material include chemical composition and phase composition. The addtional components include main crystal phase, matrix, crystal phase, chemical composition

Q: What is required to do refractory material?: Can you be more specific about what aspect?

Q: What are fire?ratings of wall thermal insulation material?: 1.thermal insulation material with grade A combustion performance: YT inorganic active insulation material for wall thermal,rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2.thermal insulation material with grade B combustion performance: Extruded polystyrene board(XPS)after special treatment/polyurethane(PU) after special treatment, phenolic aldehyde,gelatine powder polyphenyl granule, etc. 3.thermal insulation material with grade B2 combustion performance: Molding polystyrene board(EPS), extruded polystyrene board(XPS), polyurethane(PU), polyethylene(PE), etc.

Q: The principle of choosing fire-resistant material in Thermal Energy and Power Engineering equipment.: Different thermal technology equipment has different operation condition and select different refractory material. We should take economical and practical as principle.

Q: What's the fire resistance test method of doors and roller shutters?: Fire resistance test method of doors and roller shutters: This standard specifies the fire resistance test method for roller shutter doors under standard fire conditions. The method is used to test the fire resistance of the ventilating duct when bearing the external fire (A duct) and internal fire (B duct). Fire resistance test of vertical ducts may be conducted referring to this standard. 1.Test specimen1.1 The test specimen is obtained by cutting from any part of the qualified metal tube unless otherwise relevant standard or mutual agreement specifies the cutting position of the metal tube. 1.2 Length of the specimen: L≈2.5D+50mm (D: outer diameter of the metal tube). The cut surface of the specimen must be perpendicular to the axis of the metal , and the seamed edge of the cut should be round off. Test method GB243-82 of metal tube necking 2. Test procedures 2.1 In the test, punch or press the metal tube into the tapered conical seat (see Figure) with a hammer or press machine, and make it uniformly diminished to the regulated shrinkage X which is calculated according to the following formula: Test method GB243-822 for metallic pipe necking: The inner wall of the seat cover used in the test should be polished, and has certain hardness and is coated with lubricating oil. Its conicity is 1:10, 1:5 or others in accordance with relevant standard provisions. If there is no provision, then adopt the conicity of 1:10. This standard is not suitable for: a) The pipeline whose fire resistance depends on the fire resistance of the ceiling; b) The pipeline with access door, unless otherwise the access door is included into the pipeline and tested together; c) The pipeline with two or three sides; d) Fume exhaust pipes;

Q: Classification of porosities in refractories and their effects on properties: The first two types of stomata are commonly examined, known as apparent porosity.

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