2022 Shanghai Gongtao High-Purity Graphite Crucible for Melting Cast Iron

Product Description

Specification: 5ml 10ml 15ml 20ml 25ml 30ml 50ml 100ml 150ml 200ml-2500ml
Points:
High alumina purity: Al2o3>99%, good corrosion resistance.
High temperature resistance, 1600C in long use, 1800C in short use.
Good thermal shock, no easy to crack.
High slip casting density

Item		Alumina milling pot
Chemical component	Al 2 O 3	≥99
	R 2 O	≤0.2
	Fe 2 O 3	≤0.1
	SiO 2	≤0.2
Vol.density(g/cm 2 )		≥3.80
Apparent Porosity(%)		<1
Bending Strength(Mpa)		>350
Compression strength (Mpa)		>12000
Permittivity ∑(1MH z )		2
The max.operating temperature		1800

 

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.