Author: Fernando Martínez - AMI International / AMI Automation
Co-Authors: G. Fernandez
The use of AMI SmartFurnace optimization modules in Electric Arc Furnaces and the developments in the optimization of the Oxygen, Natural Gas and Carbon Injection have been continuously improving the steelmaking process in EAFs around the world. One major milestone has been to close the control loop of chemical energy control with the introduction of a Laser Off Gas Analyzer, measuring the CO, CO2, H2O and Temperature of the off gas. The measurements taken by the instrumentation are used by the SmartFurnace Off Gas and Oxygen Module to calculate the optimal setpoints of the EAF burners and lances. The chemical energy modules are complemented dynamic process models and algorithms for electrical energy providing an integral furnace control. The latest implementations of this technology in plants with a wide range of raw materials, EAF mechanical characteristics and production needs are described in this paper, and the achieved results are shown.