mullite refractory brick made in

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Product detail:

mullite refractory brick made in China

High strength

Low thermal expansion coefficient

Good thermal conductivity and thermal shock resistance

Good resistance to liquid aluminum erosion capability

High erosion

 

2. Applications of mullite refractory brick

Widely used in large aluminum electrolytic cell of lining material. In the electrolytic aluminium industry, because of nitride bonded silicon carbide products can be made thin wall lining, enlarge the tank capacity, improve the thermal conductivity, can rapid cooling, and they are permitted to enter a higher power, increase the tank production capacity, at the same time, in its surface can form alumina and cryolite of eutectic content, in order to protect the tank lining work layer, prolong service life, therefore, this product is aluminum industry generally welcome. 

 

3. Physical and Chemical Index of mullite refractory brick 

ITEM			INDEX
SiC %			72 Min
Si3N4 %			21 Min
Fe2O3 %			0.5 Max
Porosity %			18 Max
Bulk density g/cm3			2.65-2.70
Bending strength MPa	Room temperature °C		42
	1400 °C		45
CCS MPa			150 Min
Thermal conductivity w/m·k 1250 °C			15-18
Tolerance		0-100 mm	±1.0
		101-300 mm	±1.5
		301-500 mm	±2.0
		More than 500 mm	±0.5%
		Surface irregularity	0.2 Max
		Face verticality	0.5 Max
		Diagonal difference	2 Max

 

 

 

4. Production process of mullite refractory brick

a.) Choose metal silicon as raw material, add additives, then mix.

b.) Put the mixture into the mold, then make embryoid by machine pressing. 

c.) Be reaction sintered by nitrogen protection in electric furnace. 

 

5. Packing details of mullite refractory brick

a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.

b.) We also pack products as custom request.

 

6.Delivery time of mullite refractory brick

30 days for 1×20GP CMB

7.Producing Equipments of mullite refractory brick

 

Mixer

 

Nitrogen furnace

 

Pressing machine

 Lab equipment

Should you have any question please feel free to contact with Hattie Yao.

I wish I could provide the best service for  you.

 

 

 

 

 

 

 

 

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