Abstract Numerical models in 2D and 3D are used to study induced currents the lining steel shell of large three-phase submerged arc furnaces. The alternating supplied through electrodes cause a significant amount power furnace shell. flow three loops with an accumulation current near top between electrodes. net result is thermal loss heat dissipated at surface. Furthermore, such may potentially...

In this paper, we study the establishment of AC electric arc furnace model via chaotic circuit. First, the static model based on energy conservation theory is established. Then, a dynamic model based on static model created previous is built to simulate AC electric arc furnace dynamic characteristics. Chua’s chaotic circuit is selected to generate modulation wave. The results obtained by using ...

An integrated experimental approach is presented for processing the optical information produced from axis-symmetric electric arc plasma. The method is based on digital image processing and chromatic modulation techniques. Chromaticity changes in a number of chromatic parameters are related to changes in physical electric arc characteristics and properties (e.g. regions, temperature). The resul...

this study was conducted in order to evaluate the effects of long term ageing on toughness andresilient modulus of asphalt concrete mixtures containing electric arc and basic oxygen furnacesteel slags. after initial evaluation of the properties of steel slags using x-ray diffraction andscanning electric microscope, eleven sets of laboratory mixtures were prepared. each set wastreated replacing ...

An explicit equation leading to a method for improving furnace efficiency is presented. This equation is dimensionless and can be applied to furnaces of any size and fuel type for the purposes of comparison. The implications for current furnace design are discussed. Currently the technique most commonly used to reduce energy consumption in galvanizing furnaces is to increase burner turndown. Th...

The study deals with arc resistance of composite Cu–Cr system materials of various compositions. The microstructure of materials exposed to an electric arc was investigated. Despite varying initial chromium contents, the same structure was formed in the arc exposure zones of all the tested materials.

The two-dimensional variable-property arc has been studied through the use of the tanh-conductivity model. Results that describe the thermal and electric arc characteristics for various values of the electrode temperatures and aspect ratios are given. The numerical evaluation is carried out by the use of a Galerkin technique. The results exhibit several novel and interesting features depending ...