High Temperature Refractory Cylindrical Alumina Smelting Crucible

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Specifications

alumina crucible:
1.high purity Al2O3 >99%.
2.Superior refractoriness.
3.High mechanical strength.
4.Long life time

Product Description

alumina crucible:

1.high purity Al2O3 >99%.

2.Superior refractoriness.

3.High mechanical strength.

4.Long life time.

Feature of the alumina ceramic crucible:

1. High chemical etching resistance.

2. High temperature up to 1800°C  

3. Resistant to sudden cold and hot, un-explosive.  

4. High density of slip casting.

5. Various kinds of shape.

99.5% Alumina Ceramic crucibleIndustrial alumina ceramic crucible is used for testing laboratory and a variety of industrial analysis. Alumina ceramic crucible

include: arc alumina crucible, square alumina crucible, rectangle alumina ceramic crucible, column ceramic crucible and a

variety of shaped alumina ceramic crucible.

Physical Character of the alumina ceramic crucible:

Performance
Item                                                                           Unit                          99 Al2O3            
Physical Characteristics       Heat resistance0C1800
Bulk density                             g/cm33.9
Water absorption                   %0
Flexural strength                     Mpa360
Mechanical Characteristics         Hardness vickers                   Gpa15.6
Elastic modulus                         Gpa370
Poisson’s ratio                           -0.23
Thermal Characteristics       Linear expansion coefficient                         (200C-5000C) 10-6/0C8
Thermal conductivity               w/(m.k)32
Specific Heat                           *10-3J/(kg*K)0.9
Electrical Characteristics     Dielectric constant (1MHZ)       -9.9
Dielectric loss angle                  *10-41

Dielectric

strength                  

*106V/m15


Packaging & Shipping

Packaging of alumina crucible: PE bag inside outer carton

(930*630*230mm),finally make the wooden pallet(950*950mm 950*1000mm) or according to your requirement

Shipping of alumina crucible : delivery within 15 days after confirm the order.


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Q:What types does soft fire prevention materials have?
Types of fire resistant species. Mainly listed as follows: finishing fire retardant paint, component fire retardant coating, fire-resistant coating for steel structure and othe kinds of fire retardant coating. Flame retardant plastics and its products, textiles, building materials, flame retardant fabric and exterior wall thermal insulation system products, floor materials, such as various types of fire prevention materials;Fire prevention board, fire doors, fire prevention, fire shutter, fire glass window frame, elevator doors, ventilation pipes, fire blocking material, fire smoke exhaust fan and other kinds of artifacts (resistance) fire prevention. Indicators of judging fire mainly include: difficult to fire, ignition, smoke toxicity, smoke density, heat release and flue gas; fireproof performance, combustion performance and combustion heat value, fire resistance, high temperature resistance, fire rating, etc. And some specific parameter is needed to use professional testing instrument to judge, but to the inorganic lab for understanding, fire prevention level test result accuracy.
Q:Which manufacturers have the best fire-proof materials with light weight?
It now appears that asbestos is the best among the most common fireproof materials. But asbestos also has great harm, especially to lung. Shanghai Xinlong Fireproofing Material Co., Ltd. and Hubei Boyue Lightweight Material Co., Ltd. were established in 2009. The company is located in Wuhan Biological New Town and covers an area of ​​30 acres. The company is a specialized enterprise which is mainly engaged in the research and development, production, sale and construction of lightweight partition board, lightweight fireproof wall panel and lightweight wall panel. The two companies are both good.
Q:I wanna ask about the thermal insulation material fire resistant level?
The inorganic have glass wool \ foam glass Bian \ the best of organic is phenolic foam \ phenolic foam composite cement layer is level A.
Q:What are the construction measures of refractory material in winter? Please descriptive briefly.
Binding agent should be attaced great importance to when construction is conducted in winter. Generally if the bingding agent is water or cement, antifreezing measures should be taken.
Q:What is the criterion of entry of refractory clay industry?
Standard sizes of refractory bricks in our country are: 230mm × 114mm × 65mm; ordinary brick: 240 * 115 * 53, Building blocks: (blind holes, through-holes) 240 * 390 * 190 * 190,240 * 190,240 * 190,190 * 90 * 190 * 390 * 190,190 * 190,190 * 190,190 * 190 * 90 * 190, 140 * 390 * 190,140 * 190,990 * 190 * 200 * 400, from 0 * 390 * 190 * 190,90 * 190,90 * 90 * 190. There is also an interlocked hollow blocks: 90 * 200 * 200 * 400,90 * 245,90 * 200,90 * 200 * 200 * 100, 90 * 200 * 290,150 * 275,150 * 200 * 200 * 200, 150 * 200 * 100, 150 * 200 * 290.
Q:what textures of furnace refractories are good?
The common one uses the ordinary aluminous fireclay brick and GB / T 3994-2005 insulating fireclay brick. The ones with excellet texture are high-grade thermal insulation refractory brick and GB / T 3995-2006 high alumina insulating firebrick, whose model is A13, the texture is alumina, A13 50u, advanced heat insulating brick B5; intermediate heat insulating brick B2, and so on. Dolomite brick: The formation of coating is of good performance and corrosion resistance, but to some extent, there exsits the f-CaO in the brick, which is easy to hydrate, and hard to transport and storage, thus less using in the production. Magnesia-chrome brick: The formation of coating is good, so it is widely used for burning zone, but the disadvantage is poor thermal shock resistance, coupled with the highly toxic positive Hexavalent Cr, so the international countries that produce and use the magnesia-chrome bricks are gradually reducing. The production unit using this brick now, please find alternatives as soon as possible.
Q:Who knows that among refractory materials, insulation boards from which refractory material industry is superior in quality?
Using high temperature insulation material during casting process .In the molding, assembly the insulation board on the ingot head or install heat insulation cap . There are three ways to install the molded steel insulation board and install insulation board on at the head of the ingot, namely, clamping, nail fixation and mosaic technique.Compared with clay-based liner, the use of insulating board will improve high steel billet rate up to about 5% to 10%.
Q:Does the aluminum silicate thermal insulation material fireproof?
How does its fireproof performance? this is the material that the decoration master worker recommands to me, how do you think of it?
Q:What effect does aluminium powder play in refractory bricks?
Aluminum powder is the main temperature resistant material ~ ~ ~ ~!
Q:What is the role of the vermiculite fireproof material?
Apart from inflaming retarding, the materials covered with vermiculite has a lot of advantages including anti rust, waterproof, anticorrosive, wear-resisting, heat-resisting and the coating is armed with toughness, colorability, adhesiveness, fast-drying and luster.

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