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Tel:0086-311-87793166/0166/0161
Fax:0086-311-87799798
E-mail: .
info@dfl-minmet-refractories.com
www.dfl-minmet-refractories.com
+ American Branch
+ ValuPlus Group Asia Limited
Products
product name: SI3N4-SIC BLOCKS USED IN ALUMIUM ELECTROLYTIC CELLS
 

 Characteristic

Silicon nitride-bonded silicon carbide bricks

Maximum service temperature1580(2876).

Excellent oxidation resistance and resistance to corrosion.

Superior resistance to metal penetration and cryolite attack

Low gas permeability

High thermal conductivity.

Low thermal expansion.

Good abrasion and erosion resistance.

Low porosity.

High modulus of rupture.

High crushing strength

Application: Sidewall blocks in aluminium electrolysis cells. Protective top rim. Combination with carbon sidewall blocks.

 

** Our company can supply SiC bonded Carbon blocks 

Name

Index

Apparent Porosity ASTM:C20                      %

15

Bulk Density  (ASTM:C20                         g/cm3

2.65

Max.Service Temperature                             

1650

C.C.S. (ISO 10059/1-92)                              MPa

180

M.O.R@1400  (ISO 5013&5041)                    MPa

45

M.O.R@20 (38 F) (ISO 5013&5041)                 MPa

43

Reheating  Linear Change (1000(1832 F)8h             %

0-0.1

Thermal Expansion

@600(1112 F)4.0*10-6/   %

0.23

 

@600(1472 F)4.1*10-6/   %

0.32

 

@1000(1472 F)4.3*10-6/  %

0.42

Thermal Conductivity

@300              (W/M.K)

25

 

@600              (W/M.K)

22

 

@1000             (W/M.K)

16

Chemical Analysis

SiC      (Min.)            %

75

 

Si3N4    (Min.)            %

18

 

Fe2O3    (Min.)            %

0.7

 

Si        (Min.)            %

0.3

 

 

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