Revestimento De Trabalho Monolítico E Carbon Free Em Panelas De Aço Da Ternium Brasil – Pionerismo No Brasil E Vantagens

Refractories for a Greener Economy: Carbon Free Steel Ladle Metal Lining

“…As previously mentioned, published works mention that the difference between the temperature losses of a steel ladle with a carbon-free refractory lining and those with a carbon-containing lining can be of the order of 10 to 15°C [1,2].The practical results showed that this order of magnitude in the reduction of thermal loss is feasible. The experience of Netto et al [4], changing the lining of a high-capacity steel ladle (335 ton), originally lined with refractories of the magnesia-alumina-carbon system, to a carbon-free lining of the alumina-magnesia system, resulted in an average temperature loss reduction of about 8 to 12°C.In addition to presenting this reduction in thermal losses, Netto et all explored very well the benefit of a carbon-free lining in the reduction of carbon pick up.In addition, the experience also confirmed the good performance of innovative carbon-free materials, whose performance substantially surpassed that of conventional carbon-containing products, guaranteeing the steel producer involved sufficient security for the permanent application of carbon-free linings.…”

“…From the point of view of steelmakers, the first question about why to use a carbonfree refractory lining in a steel ladle would certainly be the cost involved and what the expected benefits would be.However, practical results have shown that the performance achieved by this type of product is completely compatible with conventional carbon-containing products that have been used for decades for steel ladles [4,11].…”

“…In addition to the possible direct energy savings mentioned above, there may still be additional potential gains from simply applying a carbon-free coating. Carbon pick up could be reduced [4], which could result in a reduction in scrap generation in IF and UBC steels. In addition, there could be less need for compensation of C in the steel, aiming at secondary refining stages after the RH degasser, leading to a shorter blowing time in this equipment, reducing its wear and increasing its useful life and availability.…”