Electrode paste

Electrode paste is used  for forming  continuous self-baking electrodes (Soderberg electrodes) in electrical thermal furnaces in  ferrous, non-ferrous metallurgy and chemical industry. 


Properties

Units of measurement

Typical values*

Grade

   

A

C

Unbaked paste

 

 

 

Coefficient of flowability

 

1.6-2.8

1.8-2.8

Volatiles

%

13

13

Mass percent of iron

%

0.50

0.50

Mass percent of silicon

%

1.40

1.40

Mass percent of phosphorus

%

0.012

0.012

Ash content

%

5

5

Baked paste

 

 

 

Bulk density

g/cm3

1.46

1.46

Ash content

%

6

6

Rupture strength

MPa

2.5

2.7

Real density

g/cm3

1.89

1.90

Compression strength

MPa

25

26

Specific electrical resistance

µОhmm

80

75

Heat conductivity

W/mK

2.4

2.7

 

 

The above values are average values and they do not constitute a specification

At the consumer's request  the coefficient of flowability can be set within a range from 1.6 to 2.8 with accuracy of ± 0.2, for example Cf=1.8±0.2

The size and shape of electrode paste briquettes depend on the shape of molds:

 

- small briquettes (SBEP): 

 

 

No.

Average dimensions, mm

Average weight, kg

1

~105

~90

~70

~0.7

2

~75

~80

~60

~0.32

 

  - - large cylindrical blocks (LBEP):

 

No.

Designation

Diameter, mm

Height, mm

Average weight, kg

1

LBEP dia. 500х850

dia. 500±20

850+50

~270

2

LBEP dia. 600х910

dia. 600±20

910+50

~430

3

LBEP dia. 900х1000

dia. 900±30

1000+50

~1010

 

 

 

            Geometrical dimensions and weight of SBEP and LBEP blocks (including positioning of two pairs of non-through (blind) holes for gripping blocks with load-lifting mechanisms) depend on the equipment and are not regarded as rejection values. The hollows after shrinkage of the paste during LBEP cooling are not regulated.

            SBEP can be shipped in (750±50)kg Big Bags.

 

The chief expert in anodes for magnesium industry and electrode pastes can be reached at  chedrekie@ukrgrafit.com.ua.