iEAF® for DRI Process
Tenova’s i EAF® technology for DRI fed furnaces continuously monitors the gas-phase, energy and bath/slag properties while providing real-time control of the EAF operation with dynamic adjustments to process parameters.
Overview
The iEAF® for DRI technology is divided into 3 progressive stepwise Modules as follows:
Dynamic Control & Optimization of Chemical Energy (Module 1): based on the industry proven NextGen® technology for continuous off-gas analysis, chemical energy, post combustion optimization and dynamic close loop control of burners, injectors and fume system.
Dynamic Energy Control (Module 2): in conjunction with Module #1, Module #2 is a combination of additional advance off-gas sensors and off-gas process control modules that effectively calculate in real time the EAF Mass & Energy (M&E) balance. The M&E balance allows the calculation of “Net Energy” (Chemical energy plus electrical energy minus losses) delivering to the charge in teal time. It enables control of the DRI feeding rate to maintain the desired bath temperature profile.
Dynamic Oxygen Control (Module 3): building on Module 2, Module 3 allows for real-time calculation of the DRI quality and expected required oxygen to obtain the desired endpoint and FeO in slag. The module controls automatically and dynamically the oxygen lances and carbon injections to avoid over oxidation during the entire heat.
Technical Data
The iEAF® technology for the DRI furnace is used to continuously monitor gas-phase, energy, and bath/slag properties and provide real-time control of EAF operation by dynamic adjustment to process parameters. The objective is to implement closed-loop control of:
Oxygen injection
Carbon injection
DRI feed rate, based on material characteristics (metallization, composition)
Electrical Power
Lime injection
Flux addition prediction based on material characteristics and real time information.
Fume System Operation
Innovation
The iEAF® for DRI solution is a robust system, hardware and software with low maintenance and highly reliable sensors
The real time data together with the process and control modules that are part of iEAF for DRI solution provide furnace knowledge and an effective process control.
Digital
The digitalization and artificial intelligence embed in the iEAF® enable continuous improvement using advanced analytics and machine learning.
Automation
Automation hardware, software and communication modules are completely customizable in accordance with an individual customer’s existing automation system and network.
Environment
Cleantech for continuous reductions in GHG emissions.
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