Conveners
Direct Reduction Process Optimization
- Alexander Fleischanderl (Primetals Technologies)
Description
1.4.2
Steel production through the Direct Reduction (DR) route presents a more sustainable alternative to conventional blast furnace processes. However, the generation of fines during raw material handling and intermediate processing stages creates significant operational challenges. These include decreased process efficiency, reduced plant throughput, increased energy consumption, and diminished...
Blast furnace is a process that reduces iron ore to obtain pig iron. Due to its high efficiency, it has been adopted as a major facility. As a result, not only have various technologies been developed and researched, but evaluation methods have also been established to optimize the raw materials used for efficient plant operation. Utilizing these evaluation methods, raw material management...
This paper presents the development and implementation of a new material gate for charging of hot DRI bulk material in melters downstream of direct reduction plants or hot pellet materials in shaft furnaces or smelters. Developed and tested over a two-year period, this material gate displays innovative solutions regarding mechanical design, serviceability, and condition monitoring, creating a...
The direct reduction process is of rising importance in ironmaking in the frame of the decarbonization effort of the steel industry. While these are known and elaborated processes, they are evolving due to the use of hydrogen, the use of lower-grade raw materials, and a size increase to achieve the required production rate. These changes require innovative process control.
The process...
The scale generated in the hot rolling process is a high-grade iron source. Fine scales are separated in a thickener and discharged as sludge in a slurry state, and they are difficult to use. This study focused on the sludge recycling through carbothermic reduction using microwave heating. Microwave heating occurs when an object absorbs microwaves. Compared to conductive heat transfer,...