99.95% aluminum combustion boat

99.95% aluminum combustion boat

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Alumina 99.95% Combustion Boat 


Our factory can produce various crucibles and saggers made of high alumina,with different  capacity and shapes.

Also accept customize as customers own drawing


Series:

•Alumina ceramic crucible

•Corundum ceramic crucible

•Arc alumina crucibles(high form alumina crucibles)

•Cylindrical alumina ceramic crucibles

•Rectangular crucibles

•Special shaped crucibles

•Alumina saggers

 

Property:

Item


Chemical component

Al2O3

≥99

R2O

≤0.2

Fe2O3

≤0.1

SiO2

≤0.2

Vol.density(g/cm2)

 ≥3.80

Apparent Porosity(%)

<1

Bending Strength(Mpa)

>350

Compression strength
(Mpa)

>12000

Permittivity ∑(1MHz)

2

The max.operating temperature

1800

 

Specification: 5ml 10ml 15ml 20ml 25ml 30ml 50ml 100ml 150ml 200ml-2500ml

Points:

  1. High alumina purity:al2o3>99%,good corrosion resistance.

  2. High temperature resistance,1500C in long use,1800C in short use.

  3. Good thermal shock,no easy to crack.

  4. High slip casting density

  5. It is inert in hydrogen and carbonaceous atmospheres and offers high resistance to alkalies and other fluxes. It is suitable for glass melting, including borosilicate glass. Recommended for use with refractory metals such as molybdenum, platinum, rhodium, tungsten, tantalum and iridium.

 

Purpose

Main purpose of crucible and sagger  is as a container for analysis and firing of material and product applied in various industries. For example: analysis of coal, melting of the metal, analysis and firing of chemical raw materials, analysis and melting of glass, analysis and firing of rare earth  materials and mineral,firing of high

temperature items such as ceramic products and melting of single-crystal raw materials.

Use

Under normal circumstances,firstly put  the items which need to be analyzed and fired into the crucible or sagger.Then heat. The speed of heating and drop in temperature are  according to the characteristics of equipment and products, fast or slow.Because of the thermal expansion of raw material which the crucibles and saggers are made of, too quick heating or cooling will easily lead to cracking of  the crucibles and saggers.The best way is slowing down,which can prolong the life of them.



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