Calderys

QUICK DRY FOR THE STEEL INDUSTRY – LADLE LIPS

 

 

OPTIMIZING THE PERFORMANCE OF THE STEEL LADLE LIP WITH QD™ MATERIALS

The Calderys new cast in situ and precast QD™ solutions installed at our german customer’s plant allowed to optimize the performance of their steel ladles (ladle lip zone).

Common to all these ladles is the tough condition processing at the steel ladle lip:

  • Splashing during tapping of steel from the converter and consequently deposit of steel scraps
  • Corrosion with the slag during the secondary metallurgy process
  • High thermo-mechanical stresses resulting of the thermal expansion of the refractory material wall
  • High mechanical stress during cleaning with a machine

The destruction of the lade lip zone during the production process or during the cleaning of the top ladle ring with an excavator machine induces the risk to disassemble the slag line made of MgO-C bricks and create safety incidents.

It is important to find a solution for optimizing the performance with a material allowing a good compromise between thermal shock, corrosion and mechanical resistance, and allowing for a heating up of the ladle that does not need to be slowed down during preheating. In addition, for steel shops like HKM processing with a vacuum tank degasser, the corrosion at the top of the ladle can be very heavy.

OPTIMIZING THE PERFORMANCE OF THE STEEL LADLE LIP WITH QD™ MATERIALS

CALDERYS has developed a new generation of CALDE™ CAST QD™ (Quick Dry) materials, which do not contain cement and allow to significantly reduce preheating by reducing dry-out and heating-up time by 50% vs. standard cement containing materials.

The CALDE™ CAST NA 55 QD™ (andalusite based) and CALDE™ CAST NB 82 QD™ (bauxite based) are particularly well adapted for this zone for standard processing. In case of heavy corrosion like with a vacuum tank degasser, the CALDE™ CAST NT 92 QD™ (tabular alumina based) is recommended.

CALDE™ CAST QD™
CALDE™ CAST QD™
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CALDE™ CAST QD™
CALDE™ CAST QD™
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The ease of installation and the fast heating-up rate allied to good general performance convinced our existing customers in Germany to choose the QD™ materials. To speed up installation, some of them even chose precast blocks prepared by Calderys or by themselves with these QD™ materials as an alternative.

For more details, read our QD™ brochure and Ask an Expert!

About Calderys

Our mission is to help you meet your ever increasing production and productivity targets, whilst protecting the safety of your people and the integrity of your equipment. Our focus is to deliver safe, reliable and high performing refractory solutions customized to your needs. Our international production and sales facilities allow us to develop and deliver customized solutions based on monolithic and ready shape monolithic refractory materials worldwide in a fast, efficient, and safe manner.

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Steel Ladles Monolithic Solutions

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An integral part of the metallurgical process, our monolithic concept for ladles help to control pollution of the steel, chemical & mechanical stability, whilst ensuring the safety of the operators.

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Quick Dry Product Range

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The Calderys innovative Quick Drying No Cement Castables provide excellent mechanical strength, quick drying and fast heating capabilities, with no curing time, leading to savings in time and energy.

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