Function and Characters of Corundum Mullite Sagger

Corundum mullite sagger/box belongs to the technical field of refractory materials and it is one of the essential and widely used kiln furniture. The manufacturing process includes material batching, molding and firing. It is composed of fused mullite, plate corundum, alumina powder, silicon powder, calcium aluminate cement and sodium hexametaphosphate. Applying gravity casting molding method, the sagger is made after demoulding and drying at high temperature. The sagger made of corundum mullite features high temperature resistance, high thermal shock resistance and long service life. Corundum mullite sagger is widely used in special ceramics, electronic ceramics, functional ceramics, heat treatment, forging furnace, medium frequency metal forging, piezoelectric ceramics, electrical ceramics, metal, ceramics, magnetic materials, rare earth phosphor, long persistence luminescent powder, high proportion of cemented carbide, positive and negative materials of lithium battery, cobalt acid lithium, strontium carbonate, cobalt oxide, lithium iron phosphate, chemical powder, nanometer iron oxide, barium carbonate powder, zirconium oxide powder, electronic ultrapure powder and other inorganic new materials.

The corundum mullite sagger that we manufacture is widely used in metallurgy, building industry, chemical industry, electronics, aviation, etc, and has been well recognized by our domestic customers in China. We are committed to R&D, and constantly design new sagger, crucible,plate and box products of high performance, reliable quality, which are also more durable, environmentally friendly and energy-saving.

Advantage(our products)

1). High temperature resistance.

2). Strong thermal shock stability

3). Resisting corrosion and stripping

4). Long working life

5). Effectively reduce probability of product's deformation, slag stripping and defects, etc.

6). Can be customerly made

Item	Units	Index
Temperature of usage	℃	≤1400
Bulk density	g/cm3	≥2.68
Modules of rupture(at room temp)	MPa	≥50
(1300℃) Modules of rupture	MPa	≥30
Open/apparent porosity	%	<25
(1300℃)Thermal expansion coefficient	X10-8K-1	6.5
SiC percent	%	60