3 Conclusion Electrodes ensure high-quality melting of scrap in the
technological process. For this, it is important to have
accurate information about the types and classification of
electrodes and to choose special electrodes.
This is mainly
because of complexity of the production technology of
graphite electrodes and their production according to the
requirements of steel melting furnaces, their price
increases. So, that is why in this article, the consumption
of graphite electrodes in the process of steel smelting is
given, and if the electrodes are damaged or broken, the
condition of the consumption of the electrodes and what
problems they cause are considered. Also, the technical
characteristics of graphite electrodes, which are the main
element of the steel smelting process, are given, the
problems that may arise in their use in the technological
process are analyzed
(fig.2), and several solutions are
given
(fig.3). As well as, in this article, suggestions for reducing the
consumption of electrodes are given.
1.
Low-quality steel scrap or incorrect proportioning
can lead to inadequate slag formation, which in turn
prolongs the smelting process. Prolonged smelting
directly contributes to higher power consumption and
increased electrode usage and losses.
2.
Mismatched
electric
furnace
power
supply
equipment and electrode specifications can lead to
problems. Electric arc furnace power transmission
involves high-current and low-voltage operations.
Overloading and prolonged operation can result in the
most significant loss and consumption of graphite
electrodes.
3.
During the oxidation phase, chemical energy is
deliberately elevated to enhance smelting intensity.
Throughout the smelting process, there is a deliberate
increase in the amount of oxygen blown to achieve rapid
melting and elevate furnace temperatures within the high-
temperature flame. In this furnace environment,
electrodes often experience significant issues such as
layering and surface oxidation.
The technical aspects of electric furnace configuration
and operation are critical. This includes choosing the
power transmission curve and gear during operation,
controlling arc starting and arc stabilization voltage and
current, and effectively coordinating the use of long,
medium, and short arcs. Additionally, the configuration
and utilization of water cooling systems are crucial factors
that significantly impact the service life and consumption
of electrodes.