Ricardo Leite Passos's scientific contributions

Publications (4)

Conference Paper
Full-text available
This work aims at contributing to the preservation of coke oven refractory lining, presenting a planning and control methodology. The condition of the refractory lining of coke batteries is crucial for its productivity and compliance with environmental guidelines. Among the challenges faced there are (i) the early identification of damages with pre...
Conference Paper
Full-text available
Fuel savings have been increasingly climbing the priority agenda of a diversity of companies and the recent development of global economy speeds up the pace. Energy intensive industries are particularly engaged in finding out creative solutions towards efficiency. On addressing the trade-off between shortage of resources and the need for R&D invest...
Article
This paper describes the main characteristics and advantages of convective heating system for refractory lining, compared with conventional heating systems. In addition the main results obtained are presented with its implementation in CSN Blast Furnace #2 and 3 Runners, in terms of cost and equipment availability, as well as the need for ceramic c...
Conference Paper
Full-text available
The heating of silica-lined furnaces in the frame of forced convection conditions combines fundamental and complex physical and chemical processes. In this work, a numerical investigation has been performed using CFD calculations, in order to gain more insight in involved processes. This work has been carried out using the capabilities of Glass Ser...

Citations

... Em alguns casos pode haver redução de até 15% da vida útil do revestimento [5][6][7]. Para prevenir a oxidação precoce do carbono é necessário a utilização de um coating que forme uma barreira física que reduza o acesso do oxigênio presente na atmosfera de aquecimento ao carbono presente na matriz refratária [8]. Estruturalmente, a oxidação do grafite ocorre pela perda de átomos de carbono das regiões imperfeitas no plano basal, presentes nas laterais ou nas arestas do cristal. ...