Advantages od dolomitic linings producto de kelsen DESULPHURISATION OF THE STEEL
Dolomitic linings are ideal for withstanding the impact of very basic slags, saturated in lime, and at the same time provide less steel oxidation, thus facilitating conditions for a rapid desulphurisation of the steel.

DEOXIDISATION AND CLEANLINESS OF THE STEEL
DEL ACERO

The main component of sintered dolomite is lime oxide (CaO). Of all refractory oxides, it is the one that possesses least oxidisation potential, and therefore leaches less oxygen into the steel that may react with other metal elements to produce non-metallic inclusions.
It is therefore the most suitable lining for the production of steel, free of inclusions such as alumina from the oxidisation of aluminium or other refractory bricks.

IMPROVEMENTS IN THE POURABILITY OF THE STEEL
The reduction in non-metallic inclusions in the steel such as alumina reduces the risk of clogging nozzles during pouring, especially if aluminium-killed steel is being produced.

INCREASED PERFORMANCE OF LININGS.
Working with lime-saturated slag gives the right basicity, suitable viscosity and low oxygen activity to produce reduced wear of the dolomitic lining. This increases the availability of ladles and reduces the specific costs of bricks and of labour for the maintenance of the lining.

HIGH SPECIFIC HEAT
Once heated, the lining acts as a heat reserve, thus preventing abrupt temperature drops in the steel, particularly during pouring at the continuous caster. This property also makes it possible to reduce furnace tapping temperatures, and therefore create energy savings.

COMPATIBILITY WITH OTHER RAW MATERIALS
Sintered dolomite is compatible with magnesite and graphite. This gives a potential broad range of products to cover different applications such as slag lines or impact pads in the ladle bottom. Careful quality selection for each application ensures an even wear of the whole lining and therefore a major reduction in the specific cost of the lining.

HIGH HEAT EXPANSION
The dolomite brick presents greater heat expansion than other types of Alumina- or Magnesite-based linings. Once the lining has been heated, heat stresses will be produced that will afford the lining strength, thus preventing its collapse when the ladle is tipped.

Belen Industriagunea, 1 - 20150 Aduna (Guipúzcoa) - Tel: +34 943.69.60.99 - Fax: +34 943.69.17.77 - Email: refractarioskelsen@calcinor.com - Kelsen 2011

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