BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 18b
SUMMARY:How laser OES rapidslag analysis shortens LF treatment times and thus saves energy and enhances refractory lifetime
DESCRIPTION:Energy consumption and refractories wear are the major cost drivers of ladle furnace treatment. In addition to factors such as the composition and temperature of the melt, these main cost factors depend strongly on duration of treatment. 

Long treatment times in particular, as they are common for extremely low Sulfur grade, can require a reheating of the melt.
This is unfavorable in several respects. First of all, there can be no treatment work carried out during reheating. Therefore, the holding time of the melt in the ladle is prolonged. Secondly, compared to the EAF the absence of a foaming slag, leads to an overheating of the slag. This excessively hot slag now radiates a considerable amount of energy into the surrounding area, which downgrades energy efficiency. Thirdly, the very hot slag has a negative effect on especially the slag zone of the refractory lining, which has a particularly negative impact on the refractory service life.

Precise process control based on in-situ slag analysis results can reliably avoid reheating and the associated unwanted effects. With the Laser Optical Emission Spectroscopy (Laser OES), an enhancement of the well-established spark OES, the physical homogenization of samples becomes obsolete. Instead, an immense amount of measurements allow a digital homogenization. Slag analysis times reduced by up to 90% allow significantly more slag samples to be taken and analyzed in-situ. Thus, the LF treatment can reach the required degree of desulfurization faster and more safely. In addition, the selection of a narrower process window, closer to the desirable optimum, leads to reduced lime consumption and fewer inclusions in the product. This reduces CO2 emissions and optimizes the use of resources.

CLASS:PUBLIC
DTSTART:20230614T102000
DTEND:20230614T104000
END:VEVENT
END:VCALENDAR