$Raw Materials for High Temperature Refractory Cylindrical Alumina Smelting Crucible System 1$

$Raw Materials for High Temperature Refractory Cylindrical Alumina Smelting Crucible$

$Raw Materials for High Temperature Refractory Cylindrical Alumina Smelting Crucible System 1$

Raw Materials for 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 resistance	⁰C	1800
	Bulk density	g/cm³	3.9
	Water absorption	%	0
	Flexural strength	Mpa	360
Mechanical Characteristics	Hardness vickers	Gpa	15.6
	Elastic modulus	Gpa	370
	Poisson’s ratio	-	0.23
Thermal Characteristics	Linear expansion coefficient	(20⁰C-500⁰C) 10^-6/⁰C	8
	Thermal conductivity	w/(m.k)	32
	Specific Heat	10^-3J/(kgK)	0.9
Electrical Characteristics	Dielectric constant (1MHZ)	-	9.9
	Dielectric loss angle	*10^-4	1
	Dielectric strength	*10⁶V/m	15

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.

FACTORY:

$High Temperature Refractory Cylindrical Alumina Smelting Crucible$

Q:Who knows what material is in the center of fireproof rolling curtain?: made of inorganic super fireproof rolling curtain: Glass fiber cloth ceramic fiber cloth (reinforced stainless steel wire) ceramic fiber blanket aluminum foil cloth. Hope my answer will help you.

Q:Which kind of external wall fire barrier zone material is better?: The following types are: rock wool, aerated concrete, phenolic aldehyde and foam cement rock wool fire barrier zone "rock wool board" mainly uses water-repelling rock wool board produced by pendulum method as thermal insulation layer materia, and connecting and fixing base wall by binding and nail bonding, it is composed level A non-combustible building energy efficiency thermal insulation system by plastering layer composed by plastering mortar and glass?fiber mesh and decorative mortar finishing layer or coating. Good air permeability

Q:What are the refractories for converter?: Magnesia carbon material with large surface repair vessel, in addition to supporting the use of magnesia and magnesia cement.

Q:What are grade classifications of the external walls for fireproofing?: The classfication of external wall material fire rating is as follows: Level A: Complete retardant building materials may not occur combustion, and the cost is relatively high, home decoration do not need such a high standard. In general, it can be used in the arms powerhouse and electrical appliance store. Level B1: non-flamble construction material has high flame-retardant, it will not be burn under the conditions of open fire and high temperature, but if it is attacked by these two conditions, it may still be burning. However, when the source of fire is transfered, it will be immediately extinguished. Level B2: Combustible building?materials have a certain degree of flame resistance, but the effect is very little. Under the condition of sufficient air, it will break out fire even in high temperature, such as wood building materials. Level B3: As long as the flammable building materials meet the source of fire or high temperature, it will break out fire. Currently, this product doed not sale on the market. So what are the external wall thermal insulation fireproofing materials? According to several grades, I will give you some specifical examples. Level A insulation material: Glass wool, foam glass, foam cement, hole-closed perlite, rock wool; level B1 : Extruded polystyrene board through special processing, referred to xps. The other is polyurethane through special treatment, referred to pu. In addition, there are phenolic aldehyde and gelatine powder polyphenyl granule; level B2: Polyethylene, referred to pe. Molding polystyrene board, referred to as eps.

Q:What are the new types of refractories? What are the characteristics? Their applications and developments?: A new type of refractory materials are: A12O3-TiO2-SiO2 refractories, MgO-A12O3-TiO2 refractories, MgO-CaO-TiO2 refractories, MgO-SiC-C refractories, nanotechnology MgO-C brick, MgO-AL2O3-AIN refractories, MgO-La2O3 refractories etc..

Q:What is the function of refractory material?: Refractory is a basic material in the field of high temperature technology. Generally, the refractory is used as structural material or lining to resist high temperature in various thermal equipment and high temperature container. In the iron and steel industry and metallurgy industry, coke ovens are mainly composed of refractory materials. Various refractories that meet the requirements are essential in blast furnace for ironmaking, hot stove, all kinds of steel-making furnaces, soaking furnace and heating furnace. Not only the die casting for molten steel needs lots of refractory materials, but also the continuous casting needs some high-quality refractory materials. Without high-quality refractory materials, external refining is also not impossible to achieve. Statistics show that the steel industry is the sector that needs the most refractory. Pyrometallurgy and thermal processing of ferrous metal also needs refractories. All high-temperature furnaces or lining in construction materials industry or other high temperature industries that produce silicate products such as glass industry, cement industry, and ceramics industry must be constructed with refractory materials. All kinds of roasting funaces, sintering funaces, heating furnaces, boilers, flues, chimneys and protective layers in chemical, power and machinery manufacturing industry need refractories. In short, when some kind of structures, devices, equipments or vessels are used under high temperature, they all should utilize refractory to resist the high temperature because those materials will deform, soften and fuse or will be eroded, scoured or broken due to the physical, chemical, mechanical effects, which may stop the operation, affect the production, contaminate processed objects and impact the quality of products.

Q:What are the materials used in refractory material processing?: AZS special refractory brick, corundum brick, magnesia chrome brick, silicon carbide, silicon nitride bonded silicon carbide, nitrides, silicides, sulfide, boride, carbide and other non oxide refractory materials; calcium oxide, chromium oxide, alumina, Magnesium Oxide, beryllium and other refractory materials. Often used insulation refractories are diatomite products, asbestos products, insulation panels and so on. Unshaped refractory materials commonly used are fettling, refractory ramming material, refractory castable, refractory plastic material, refractory clay, refractory gunning, refractory cast material, fireproof coating, lightweight castable, mud etc..

Q:The mechanism and function of antioxidants in carbon containing composite refractories are briefly described.: 3, the selection principle of antioxidant and its thermodynamic and kinetic mechanism31 selection principles of antioxidants:(1) according to the thermodynamic data and the conditions of use, the possible condensed phase and the vapor pressure of each gas phase are determined;(2) compare the size of each coacervation and oxygen affinity, and the possibility of reaction with CO.(3) the influence of various reactions on the microstructure of brick was analyzed.The thermodynamic and kinetic mechanism of 3.2 antioxidantsFrom a thermodynamic point of view, at the operating temperature, the additives or additives that react with carbon react with oxygen more closely than carbon and oxygen, giving priority to carbon oxidation, thus protecting carbon;From the analysis of dynamics point of view: the compound additive with oxygen and carbon monoxide reaction changed the microstructure of carbon composite refractory materials, such as increasing the density, blocked pores, hinder the diffusion of oxygen and reaction products.

Q:What is the fire endurance of fireproof glass cotton?: of course,A level is better. A-class is non-combustible, class B is fire retardant, rock wool fire resistance is 800 ℃, glass wool fire resistance is 450 ℃ , class B has a relatively better thermal insulation effect, hope it can solve your doubts.

Q:What is special refractories?: Long nozzle, slidding plate, tapping hole, stopper rods, and products that steel mills use

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