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Opracowanie sposobu odtleniania przetlenionej kąpieli metalowej w piecu łukowym przeznaczonej na wyroby stalowe o dużej czystości tlenkowej

Szypuła I., Zdonek B., Różański P.

Prace Instytutu Metalurgii Żelaza

2011

T. 63, nr 3

44-46

Ideą pracy było opracowanie technologii odtleniania stali o bardzo dużym stopniu przetlenienia (aktywność tlenu w kąpieli przy spuście z pieca powyżej 600 ppm) glinem przy spuście oraz rafinacji pozapiecowej ciekłej stali dla usunięcia produktów odtleniania i zapewnienia w stali jak najmniejszych zawartości tlenu całkowitego.

The idea of the work was to develop the technology for deoxidisation of steel with very high level of overoxidation (the oxygen activity in bath at tapping from the furnace above 600 ppm) using aluminium during tapping and for secondary refining of liquid steel to remove the oxidation products and ensure as Iow content of total oxygen in steel as possible.

Oxygen desorption from water in a column apparatus with packet packing

Krawczyk J., Maszek L., Mieszkowski A., Rosiński J., Roszak Z.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 1

24-26

Thermal water deoxidisation is a physical process of oxygen desorption from water occurring in the conditions of concurrent heat and mass exchange. The research of the present work required the construction of an original research stand. It was used for performing a series of preliminary tests aimed at the assessment of the influence of controllable parameters of the process and the influence of the number of layers of packing and also its configuration on the process itself. The results of tests were presented in the form of graphs illustrating the relationship between temperature, oxygen concentration in the degassed water and the number of layers in the compact and spaced packet of packing. The graphs present the above relationship in the variable temperature of water directed to the desorber. As a result of performing preliminary tests, a packet packing composed of seven compact layers was chosen for application in main tests. In order to generalise the obtained test results, a model based on Colburn's method was proposed. The height of the transfer unit was dependent on the ratio of the intensity of the flowing phases and the ratio of the temperature of water directed to degassing and the optimal temperature for the process.