Searched for: subject%3A%22furnace%22
(1 - 20 of 76)

Pages

document
Roeplal, R.N. (author), Pang, Y. (author), Schott, D.L. (author)
Bed permeability is a crucial factor in blast furnace performance which depends on the material distribution achieved through charging. Since a homogeneous bed of pellet and sinter is recommended, it is crucial to understand whether segregation of the pellet-sinter mixture occurs during charging. The Discrete Element Method is useful in this...
journal article 2024
document
Adesanya, Elijah (author), Dabbebi, Rawia (author), Rößler, Christine (author), Pavlin, Majda (author), Li, Z. (author), Luukkonen, Tero (author), Yliniemi, Juho (author), Illikainen, Mirja (author)
Two synthesis pathways (one- and two-part) in alkali-activated binders were compared using ground granulated blast furnace slag (GGBFS), mineral wool (MW) activated using dry and liquid alkali activators with similar Na<sub>2</sub>O/SiO<sub>2</sub> modulus. The effect of activator type on reaction kinetics, strength development, setting times...
journal article 2024
document
Li, Meng (author), Li, Chao (author), Wu, Guanyin (author), An, Xizhong (author), Zhang, Hao (author), Fu, Haitao (author), Yang, Xiaohong (author), Zou, Qingchuan (author), Wu, Yongli (author), Dong, Kejun (author)
An in-depth exploration of the reaction kinetics and thermo-chemical behaviors of the raceway can offer practical insights for optimizing the operations of blast furnace (BF), thus achieving a more effective iron and steel production process. In this study, the dynamic characteristics and the flow, heat and mass transfer behaviors in the BF...
journal article 2024
document
Roeplal, R.N. (author), Pang, Y. (author), Adema, Allert (author), van der Stel, Jan (author), Schott, D.L. (author)
Bed permeability is a crucial factor in blast furnace efficiency and stability. The Discrete Element Method (DEM) has been used extensively to model material flow in different parts of the furnace and holds great potential for optimizing the permeability. The inherent computational load is the main bottleneck in using this method to provide...
review 2023
document
Shijaz, H. (author), Gallucci, Fausto (author), Straathof, Adrie J.J. (author), Posada Duque, J.A. (author)
Syngas fermentation is a biochemical pathway to produce ethanol and has been commercialized successfully. The economic viability of this process could be further improved to become more competitive in the existing ethanol market. Improving gas utilization is the key, and can be done by recycling the unreacted syngas. This work is an early...
book chapter 2023
document
van Rijswijk, Tom (author)
Alkali activated concrete is seen as possible contender to alleviate the environmental footprint of the concrete industry. The goal of this research is to evaluate the extend to which ground granulated blast furnace slag and calcined clay-based alkali activated concrete can be utilized in concrete revetment applications with equal performance in...
master thesis 2022
document
Muhammad Dzikri Ahira Soefihara, S (author)
<br/>
master thesis 2022
document
Nakate, P.A. (author)
Industrial emissions are discussed worldwide for their adverse effects on the global climate change. Nitric oxide (NOx) emissions are harmful among the various flue gases emitted in the atmosphere. There are multiple routes of formation of NOx in industry. The formation of NOx due to local overheating in fuel lean conditions is the most common...
doctoral thesis 2022
document
Hage, J. L.T. (author), van der Stel, J. (author), Yang, Y. (author)
Silicon [Si] in hot metal is an impurity acting in the steel shop as an energy source that is released by oxidation during oxygen blowing in the converter. Preferred silicon concentration in hot steel is typically 0.4 wt-% (± 0.1 wt-%), helping predictable and low-cost processing. In practice, the Si concentration is difficult to control and...
journal article 2022
document
Lahaye, D.J.P. (author), Nakate, P.A. (author), Vuik, Cornelis (author), Juretic, F. (author), Talice, Marco (author)
The operation of large industrial furnaces will continue to rely on hydrocarbon fuels in the near foreseeable future. Mathematical modeling and numerical simulation is expected to deliver key insights to implement measures to further reduce pollutant emissions. These measures include the design optimization of the burners, the dilution of...
journal article 2022
document
Zhang, Hongzhi (author), He, Yanchen (author), Wang, Chuan (author), Guan, Yanhua (author), Ge, Zhi (author), Sun, Renjuan (author), Ling, Yifeng (author), Šavija, B. (author)
Carbide residue activated blast furnace slag is a relatively new kind of eco-friendly construction materials. This work addresses the design of foamed lightweight concrete as road embankment material using such material. A statistical mixture design approach was adopted to assess the influence of each ingredient as well as the interaction...
journal article 2022
document
Sun, Yubo (author), Liu, Zhiyuan (author), Ghorbani, Saeid (author), Ye, G. (author), De Schutter, Geert (author)
The present study explores the possibility of replacing blast furnace slag (BFS) with coal fly ash (FA) to produce alkali-activated material (AAM) concrete with hybrid precursors. With an increased FA replacement ratio, the reaction kinetics, fresh and hardened properties of AAM mixtures have been investigated. The retardation effect on the...
journal article 2022
document
Li, Wei (author), Yi, Liming (author), Jiang, Wen (author), Dong, H. (author), Zhang, Yong (author)
This paper presents experimental investigations into the effects of ultrafine blast furnace slag on microstructure improvements against chloride penetration in saturated and unsaturated cementitious systems exposed to cyclic drying–wetting conditions. The hydration kinetics of ultrafine slag powders and pore solution chemistry in slag-blended...
journal article 2022
document
Andrade, Carmen (author), De Belie, Nele (author), Ducman, Vilma (author), Frederickx, Lander (author), Lothenbach, Barbara (author), Medina Martinez, César (author), Vollpracht, Anya (author), Wu, B. (author), Gruyaert, Elke (author)
Many (inter)national standards exist to evaluate the resistance of mortar and concrete to carbonation. When a carbonation coefficient is used for performance comparison of mixtures or service life prediction, the applied boundary conditions during curing, preconditioning and carbonation play a crucial role, specifically when using latent...
journal article 2022
document
Sun, Yubo (author), Zhang, Shizhe (author), Rahul, A. V. (author), Tao, Yaxin (author), Van Bockstaele, Filip (author), Dewettinck, Koen (author), Ye, G. (author), De Schutter, Geert (author)
This study aims to interpret the early-stage rheology of alkali-activated slag (AAS) paste from microstructure perspectives. The microstructures visualized by cryogenic scanning electron microscopy (cryo-SEM) revealed the essential distinction between hydroxide and silicate-activated slag pastes. The hydroxide-based mixture showed typical...
journal article 2022
document
Hashimoto, Y. (author), Masuda, Ryosuke (author), Mulder, Max (author), van Paassen, M.M. (author)
To achieve the automation of blast furnace operation, an automatic control system for hot metal temperature (HMT) was developed. Nonlinear model predictive control (NMPC) which predicts up to ten-hour-ahead HMT and calculates appropriate control actions of pulverized coal rate (PCR) was constructed. Simulation validation showed that the NMPC...
journal article 2022
document
Zhang, Y. (author), Saravanakumar, Karthikeyan (author), Copuroglu, Oguzhan (author)
Because the essential quality metrics of blast furnace slag are based on its oxide composition, the determination of chemical compositions of unhydrated slag grains in an aged concrete could be useful for understanding its past performance and in predicting the remaining service life of existing slag-bearing concrete. In this research, the...
journal article 2022
document
de Munnik, Hans (author)
Heat transfer by radiation is something you experience everyday: when walking outside in the sun or when cooking your diner. This thesis provides understandable models of the role that radiation plays in the transfer of heat. By studying literature we developed a mathematical basis for the heat transfer model, where we discuss diffusive,...
bachelor thesis 2021
document
van Veen, Bas (author)
This thesis report discusses the design of a cost-effective and compact electric combustion air preheating for the LSV® burner. The industry has a complex problem to solve and an important role to play during the energy transition, that is needed because of global warming. Many industrial processes use heat generated by the combustion of fossil...
master thesis 2021
document
Jia, W. (author), Markine, V.L. (author), Jing, Guoqing (author)
Under the high requirement of ballast materials and the frequent maintenance of high-speed and heavy-haul railway, the maintenance cost and material consumption become an important problem. Several methods are used to increase the stability and service life of railway structure, also using recycled materials in ballast bed construction can be a...
journal article 2021
Searched for: subject%3A%22furnace%22
(1 - 20 of 76)

Pages