Synthetic slag Uses

Synthetic slag consists of prepared mixture of several individual oxides which is used during secondary steel making to assist the steel treatment in the ladle from the viewpoint of effective refinement.

Uses

New required steel grades need the production of more alloyed, clean and desulphurized steels. This metallurgy demands the use of synthetic slags and slag additives more efficient and complex.

Calcium aluminates

Metallurgical applications

Homogeneous synthetic slags generation

Alternative flux to CaF2

Good protection against H2 /N2/O2 pick up

Capacity of S absorption

High capacity of absorption of steel inclusions

Free Fluorine slags

Addition of MgO in order to reduce refractory wearing

High melting speed

Tipical compositions CaO/Al2O3/MgO

COMPOUND

ALUCAL 40

ALUCAL 55

ALUCAL 55

CaO

40,5 %

35,5 %

26 %

Al2O3

50,5 %

51 %

51 %

SiO2

3,5 %

5,2 %

5,5 %

MgO

3%

4%

10,7%

Fe2O3

1,5 %

1,8 %

2 %

TiO2

1 %

1 %

1 %

Advantages against imported products

Local raw materials, out of abroad markets and currency exchanges.

Possibility to product a wide range of ratios CaO/Al2O3/MgO according to the process requirements.

Short delivery times, allowing reduce the customers stocks.

Product Presentation: cold agglomerated briquettes.

Slag Fluidizer

Iron losses

Iron losses into desulphurization slag are one of the most important cost factor in hot metal desulphurization process.

Slags generation during desulphurization process and its stirring, causes iron droplets get caught into the slag if it has not fluidity enough.

Slag’s fluidity can be affected by the dissolved carbon incorporated during the process and high melting point slags generation.

The most efficient way to reduce slag’s melting points is by the use of fluxes in the process.

Slag deoxidizer

New applications and steel grades require lower sulfur content, so slags need to be more active in the desulphurization process. It means to have as low as possible oxygen activity.

Source - http://www.aleastur.com/en/siderurgia-en/synthetic-slag/

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