A review study on ladle slag detection technologies in continuous casting process

Year 2019, Volume: 3 Issue: 3, 144 - 149, 15.12.2019

Hakan Kapusuz Mehmet Ali Güvenç , Selçuk Mıstıkoğlu

https://doi.org/10.35860/iarej.421657

Cited By: 5

Abstract

In
steel production, continuous casting method using BOF or EAF is increasing day
by day. However, the complex nature of the continuous casting process poses
many challenges for steelmakers. During the general steel production process of
liquid steel, the state of ladle slag penetration into liquid steel is one of
the most influential factors in steel quality. If the ingress of ladle slag
into liquid steel cannot be controlled, undesirable results in terms of poor
quality, safety and castability can occur. Generally, ladle slag consists of
oxides such as CaO, SiO 2, Al 2 O 3, MgO. In conventional methods, the operator
prevents the slag entry by manually controlling it. This method is performed
directly by the operator, so the error rate is high. For this reason, it is not
desired to be used by steel producers who want high quality products. In this
context, steel mills carry out various activities to separate slag from liquid
steel. The development of sensor technologies has accelerated the slag
detection process. Acceleration and magnetic sensors are among the most widely
used methods in this field. In this study,
the systems used worldwide for the determination of slag in the continuous
casting process were investigated and presented. The advantages and disadvantages
of these systems are discussed. The detection methods by considering investment
cost, detection time, accuracy were compared and presented. In the scope of
this study, it is seen that every method has own advantages and disadvantages
over other. 

Keywords

Continuous cast, Ladle slag detection, Vibration

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