This research project aims to develop an innovative and sustainable composite mixture as an alternative to traditional concrete, with the goal of establishing a new long-term standard for permeable civil and road pavements with high technical performance.
The proposed mixture combines geopolymer binders, synthetic aluminosilicate-based materials known for their superior mechanical, chemical,...
This paper presents the design and implementation of a fuzzy logic controller for regulating inter-stand tension in a tandem mill. The developed fuzzy controller utilizes input variables such as tension error, rolling force, exit speed, and speed correction, and applies a rule base derived from operator experience to adjust the gap position and speed references. The controller operates in...
The current national project we are working on is being carried out in two main parts until 2030.
The first part involves technology for injecting hydrogen-rich gas into the blast furnace, and the second part focuses on developing technology for charging scrap/HBI into the blast furnace, which will be developed up to the demonstration stage.
The first part will focus on securing the...
As industries transition towards more sustainable supply chain principles, leveraging reliable LCA databases becomes crucial. Among others, the metals industry also faces increasing demand for transparent environmental data to support sustainability decisions and climate targets. However, the metals industry presents unique challenges to datasets’ creation (e.g., diverse extraction methods,...
A novel water heating system for steel sheet cleaning was developed, which recovers heat from high-temperature wastewater and utilizes a heat pump to heat the supply water. By integrating heat exchangers and heat pump heating, the system significantly reduces energy consumption and CO₂ emissions compared to conventional steam heating. The adoption of indirect heat exchange and multi-pass flow...
Increasing steel weight per heat is a recurrent theme at many steelmakers to increase the productivity of the plant. This is generally limited by the volume of the various aggregates, EAF, Transfer ladle, AOD and casting ladle. The steel shells are fixed and cannot be modified easily. There is only the potential to reduce the size and shapes of the used refractory material. To avoid a negative...
The environment surrounding the iron and steel industry has greatly changed. The Paris Agreement, a new climate change regime, has been in effect since ‘21, and the Parties announced the National Determined Contribution (NDC) in accordance with the Paris Agreement. After the establishment of the NDC in 2015, Korea revised its target to “reduce the greenhouse gas emissions by 40% compared to...
Establishing mathematical models to predict the production status and process parameters of electric arc furnaces (EAFs) for guiding actual production holds significant importance. Based on the principles of mass and energy balance, this study developed a steelmaking model for ECS EAF. Through calculations with this model, parameters such as post-combustion energy utilization efficiency,...
Steel production accounts for approximately 7–9% of global CO₂ emissions, making it one of the most critical industrial sectors in the transition toward climate neutrality, a strategic objective of the European Union by 2050. To reduce environmental impact, many steelmakers are converting traditional Blast Furnace–Basic Oxygen Furnace (BF–BOF) routes to more sustainable technologies such as...
In flat steel production, hot-rolled steel surfaces are subjected to acid pickling to remove surface oxide layers. During pickling, the iron concentration in the acid increases over time, and the spent acid is treated and recycled through an acid regeneration process. As a by-product of this process, iron oxide particles composed primarily of hematite and magnetite with an average particle...
Describing scrap dissolution has become a topic of renewed interest due to the increasing significance of the electric arc furnace in global raw steel production, as well as the growing complexity introduced by charging mixtures of scrap, DRI, HBI, and hot metal. We present a physically based, computationally efficient dissolution model built on a front-fixing moving-boundary formulation. The...
Based on the Ion–Molecule Coexistence Theory (IMCT) and the steel–slag equilibrium theory, this study establishes a thermodynamic equilibrium calculation model for the high-cleanliness production of crankshaft steel. Systematic calculations were performed to determine the rational distribution range of SiO2 in the slag, as well as the recommended CaO/Al2O3 ratio. The variations in inclusion...
One of the major challenges in scrap-based steel production is the retention of residual elements within the steel matrix, among which copper (Cu) is particularly critical. The inability to remove copper during steelmaking not only degrades mechanical and surface properties, but also causes significant operational problems in downstream processing stages.
Following hot rolling, oxide scale...
High-performance forged components (e.g., steam-turbine shafts) demand tight control of microstructure and creep behaviour. In industrial development, however, parameter selection and qualification frequently involve iterative loops (trial batches, rework and occasional scrap), which translate into avoidable material and energy losses. AID4GREENEST project tackles this challenge by combining...
In order to improve the distribution of large-sized NbC aggregation in S30432 austenitic heat-resistant steel, this study systematically investigates the mechanism of modified inclusions with different Ce contents. First, the morphology, size, and distribution characteristics of NbC formed under solidification segregation were observed using SEM; further, the three-dimensional morphology of...