J7-7197 — Final report
1.
Optimization of the electric arc furnace process

Paper in A'' journal, describing the methodology of optimization of the electric arc furnace melting processes.

COBISS.SI-ID: 12271444
2.
Additional slag doors for increased EAF efficiency

Paper in A1/2 journal, describing the concept of additional slag doors in electric arc furnace. Using the additional slag doors, a more precise control of the slag amount can be achieved, leading to more optimal energy transfer to the steel bath.

COBISS.SI-ID: 11768916
3.
Comprehensive electric arc furnace model for simulation purposes and model-based control

Paper in A/1 journal, describing further development and parameterization of the electric arc furnace model for smart sensor and optimization purposes.

COBISS.SI-ID: 11444820
4.
A computational model for heat transfer coefficient estimation in electric arc furnace

Paper in A1/2 journal, describing the model for heat transfer coefficient estimation between different zones in the electric arc furnace. Using such estimations, higher calculation accuracy of the crucial process values in electric arc furnace is possible

COBISS.SI-ID: 11136084
5.
Electric arc modeling of the EAF using differential evolution algorithm

Štore Steel Ltd. makes more than 1400 steel grades. The highest costs in steel production from scrap stems from the electric arc furnace electric energy consumption. Electrical energy is used to produce heat energy generated by the burning arc between the graphite electrodes and steel scrap. In general, the balanced heat input of all electrodes is essential. Based on the input of thermal energy from all electrodes, also the possibility of occurrence of hot and cold spots in the electric arc furnace can be determined. Perception of and the elimination of the unequal heat load of electrodes have a major impact on reducing operating costs and increasing the efficiency of the electric arc furnace production. Most authors have modeled the arc furnace as an electrical equivalent circuit, where the electric arc is modeled using the macroscopic approach. In this paper, the microscopic approach to the electric arc model is described, where a set of equations (electrical neutrality, Dalton law, Saha–Eggert) was solved using differential evolution algorithm. The results of modeling were practically confirmed by measuring electric parameters (voltage, current, active power) during the electric arc furnace operation. The project helped in investment of a new electrode controller by using the implemented logic.

COBISS.SI-ID: 20153366