$Raw Materials for Refractory - Dense Fused Alumina System 1$

$Raw Materials for Refractory - Dense Fused Alumina$

$Raw Materials for Refractory - Dense Fused Alumina System 1$

Raw Materials for Refractory - Dense Fused Alumina

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Specifications

Dense fused alumina ,compact fused alumina for refractory
1, High purity:99% min
2,Excellent performace

Dense fused alumina ,compact fused alumina for refractory

Description:

Dense corundum, with a-AL2O3, as main principle crystalline phase, gray, is characterized by high melting point,high bulk density, low apparent porosity,excellent wear resistance,slag resistance, steady volume and thermal shock resistance. It is an excellent refractory material in corundum series.

Advantages:

1) we are more specialized in the procuction.

2) we can offer more competitive price

3) we can produce as per customer's requirement

Chemical and physical analysis

CHEMICAL COMPOSITION	GRIT >0.1mm	TYPICAL VALUE	FINE POWDER ≤0.11mm	TYPICAL VALUE
AL2O3%≥	99	99.2	98.6	99.0
SiO2%≤	1.0	0.4	1.0	0.45
Fe2O3%≤	0.15	0.1	0.3	0.2
TiO2%≤	0.1	0.05	0.1	0.05
CaO%≤	0.1	0.05	0.1	0.05
MgO%≤	0.1	0.05	0.1	0.05
NaO2%≤	0.1	0.05	0.1	0.08
C%≤	0.1	0.08	0.12	0.1
Apparent Porosity%≤	2.0	0.8	2	0.8
Bulk density (g/cm³)%≥	3.90	3.93	/	/
True density (g/cm³)%≥	3.96	3.99	3.96	3.98

Packaging & Shipping

25kgs/bag 1MT /bag as per customer's requirement.

Our Services

1.We will keep the client informed about the cargo situation,from production time to the shipment.

2.We test samples picked up from the plant or loading port in our designated third party sample before every shipment to make sure each lot quality is good for our client.

3. we are reliable, Hope that friendly cooperation.

FACTORY:

$Dense Fused Alumina For Refractory$

Q: What are the materials of white firebricks?: The commonly-used firebricks include alumina bricks, corundum bricks, chamotte bricks, high alumina bricks, diatomite bricks, zircon bricks, lightweight corundum bricks, zirconia bubble bricks and so on ~~~

Q: Does anyone know the characteristics of refractory for glass kiln?: Quartzitic sandstone. Also known as quartzitic sandstone or white gravel. Which is a kind of natural refractory and quartz sandstone bonded by the kaolinite. Who appearance is better to be steel-grey, dense and hard, free of impurities and stripes. Its main crystalline phase is mainly quartz and kaolinite. Which has obvious stratified structure and anisotropism. The refractoriness fluctuation is between 1650~1730 ℃. The expansibility of quartzitic sandstone is different from that of silica?brick, who has maximum coefficient of thermal expansion under temperatures of 700 ~ 800 ℃, and it is most likely to burst at this time. The load softening temperature and the compression strength of calcined quartzitic sandstone have been improved significantly, with small residual expansion, stable volume, better thermal shock resistance, so it is generally to use calcinated quartzitic sandstone as refractories. which has been widely used as sidewall blocks on the small and medium sized furnaces.

Q: What does fire-resistant insulation coating have?: What is the most famous is that grade A is incombustible?thermal?insulation?material. W W inorganic active wall insulation materials, cement foam insulation board, vitrified?micro bead?thermal insulation?mortar, rock wool board, glass wool board, foam ceramics, etc.

Q: what's the varieties of fire-proof?sealing?material?: ATD-AB, organic fire-proof caulking, fire retardant bag, fire retardant net, fire retardant ring, fire barrier wrap, fireproofing sealing strip, flexibility fireproofing coiled material, fireproof glue, etc., fireproofing sealing materials currently on the market can be divided into two types, one is the traditional type: flexible organic caulking, WXY-II, fire retardant bag, fire?bulkhead, cable refractory coating; there are some new materials used in large-scale projects: fireproofing coating board system (fireproofing coating board, intumescent fireproof sealing tape, elastic fireproof sealant, Waterborne Fire-retardant Coating), fire retardant module system (fire retardant module, sealing gum, cable refractory coating), fireproofing plaster system (fireproofing plaster, sealing gum, cable refractory coating).

Q: How long does it take for refractory cement to solidify?: 1. First you should be aware of the concepts of condensation and condesation time. Refractory cement belongs unshaped refractories, which when added water or liquid binding agent to mix, the agitation material will gradually lose thixotropy or plasticity and become in a state of solidification, thus is solidified. The time needed to finish the process is called solidification time. The whole process is divided into initial and final set. When beginning to lose plasticity called the initial setting, when called plasticity completely lost the final setting. 2. For refractory cement, the solidification time depends on the matching of the material and the parts and using methods. Under normal circumstances, in order to meet the requirements of time of construction, the initial set time should be no shorter than 40min, and the final set time should be no longer than 8H 3. There are also some exceptions. When refractory cement is used for spraying and injection operation together with other refractory castable, the set time is required as short as possible, sometimes flash set is required to prevent the occurrence of peeling or collapse of the spraying layer.

Q: Who knows what kind of fire prevention materials are there?: 1, Fire-proof board Fire-proof board is the most frequently used materials in the market. There are two kinds of fireproof boards which are commonly used; one is the high pressure decorative board, which has the advantages of fire prevention, damp proof, abrasion resistance, oil resistance, easy cleaning, and more variety of colors and designs. The other one is a glass magnesium fire board, the outer layer of which is a decorative material, the inner layer of which is a mineral glass magnesium fire material. It can resist 1500-degrees high temperature, but not suit for decoration. The installation of fireproof ceiling in the exit passageway, stair well and corridor can ensure safety evacuation, and protect people from the spread of the fire. 2 Fire-proof door Fireproof door is divided into wooden fire proof door, steel fire proof door and stainless steel fire proof door. Usually the fire proof door is used for the opening of the firewall, the entrance to the staircase, the evacuation of the aisle, the openings of the pipeline and other parts of the building, and it has an important role in fire separation and reducing the loss from fire. 2 Fire resisting shutter I hope it may be helpful to you.

Q: What are the differences and connections between softening temperature of the refractory under a fixed load and thermal resistant creep property of the refractory?: The result of refractoriness under load is temperature while the result of creep is percentage of deformation. Refractoriness under load and creep can be tested by an instrument. Refractoriness under load reflects the temperature in which the deformation reaches a certain degree under the condition of load. Creep reflects the deformation refractory has under the condition of constant temperature and load. Both refractoriness under load and creep are important criterion for the operating temperature of refractory.

Q: What is the appropiate thickness if fire resistant time for ultra thin steel structure coating is 2.5 hours?: Hello steel structure can adopt surrounding concrete or brick, fireproof coating, fireproof board coating and composite structure for its fire resisitance. Fire resisitance board can be divided into thick fire protection plate and thin plate, the thickness of the plate thickness of the fire is between 20 ~ 50mm, mainly includes calcium silicate fireproof board and expansion boring stone fire board, the main varieties are KB board, CF; thin fireproof plate is between 6 ~ 15mm thick, the main varieties include enforced short fiber cement plate, ordinary enforced fiber silicate calcium board and glass cloth reinforced inorganic board.

Q: What are the classifications of refractory? Which category does steel ladle castable belong to?: In addition, it can be divided into refractory, shapeless refractory material. And it can also be divided into acidic refractory, basic refractory and neutral refractory. If you want to know more, you can ask thme. In fact, every company has different refractory clasifications. There are more clasifications in Huaheng.

Q: Is aluminium oxide refractory material?: Aluminium oxide with 2030?C melting?point is a kind of good refractory material. It can be used as analytical reagent, dehydration and adsorbing?material of organic solvent, catalyst of organic reaction, abraser,polishing agent, raw material of aluminum smelting technology and refractory material. Hope it is helpful to you.

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