Results 191 to 200 of about 16,003 (268)

Bridging the Gap in Carbon Free Iron Making: How Hydrogen Affects the Reduction of Iron Ore between 900 and 1590 °C. [PDF]

ACS Sustain Chem Eng
Mohanta RK, Fisher D, Korobeinikov Y, Hong Q, Muhich C, Sridhar S, Leick N.   +6 more
europepmc   +1 more source

Hydrogen‐Based Reduction of Hematitic Iron Ore in a Fluidized Bed Kinetic Reactor at Elevated Pressures

steel research international, EarlyView.
This study investigates the reduction behavior of two international iron ores, including a synthetic hematite produced by oxidation of magnetite, in a novel fluidized‐bed kinetic reactor at elevated pressures. The reduction takes place at various temperatures (650°C, 700°C, and 750°C), and various hydrogen partial pressures (30, 55, and 80 vol% H2 ...
Valentina Nigitz, Aaron Wieder, Sandra Jezernik, Christoph Ahr, Mark Berchtold, Franz Winter   +5 more
wiley   +1 more source

Experimental and Computational Investigation of Slag–Refractory Interactions Under Conditions Relevant to Hydrogen Plasma Smelting Reduction

steel research international, EarlyView.
This study investigates how slag interacts with magnesia–carbon (MgO–C) refractories under conditions relevant to hydrogen plasma smelting reduction. High‐temperature refractory wear tests are combined with thermodynamic modeling to examine refractory dissolution into slag and slag infiltration into the refractory.
Eeli‐Matti Sassi, Eetu‐Pekka Heikkinen, Tero Vuolio, Riku Mattila, Ville‐Valtteri Visuri   +4 more
wiley   +1 more source

Comparative Analysis of Industrial Fused Magnesia from Natural and Flotation-Processed Magnesite: Associations Among CaO/SiO₂ Ratio, Silicate Phase Formation, and Microcracking. [PDF]

Materials (Basel)
Wang C, Luan J, Yang Z, Ma Q, Wang G, Zang X.   +5 more
europepmc   +1 more source

Isothermal Reduction Behavior and Microstructural Evolution of Iron Ore Sinter Under Simulated Radial Blast Furnace Gas Atmospheres With Hydrogen Injection

steel research international, EarlyView.
Commercial iron ore sinter is reduced isothermally under operation‐derived radial blast furnace gas atmospheres with and without 20 kg H2/tHM injection. Hydrogen improves reduction at 900–1100 °C, whereas at 700 °C the high H2O content limits the wüstite‐to‐iron driving force.
Ahmed Abdelrahim, Sherif Hegazy, Mikko Iljana, Aki Koskela, Carmen van der Kroon, Timo Fabritius   +5 more
wiley   +1 more source

Improved uranium bioleaching in brackish environments via microbial consortium using RSM based modelling and optimization. [PDF]

Sci Rep
Shoja M, Mohammadi P, Tajer-Mohammad-Ghazvini P, Zare-Tavakoli H.   +3 more
europepmc   +1 more source

Multi‐level fatigue reliability assessment of reinforced concrete railway bridges

Structural Concrete, EarlyView.
Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento, Jaime Gonzalez‐Libreros, Chao Wang, Lennart Elfgren, Ola Enoksson, Tommy Höjsten, Lars‐Olof Andersson, Gabriel Sas   +7 more
wiley   +1 more source

A review of metallurgical processing and value-added utilization strategies for zinc oxide. [PDF]

Sci Prog
Zhang Y, Ma Z, Gu X, Jia S, An X, Niu M, Zha X, He R, Deng R.   +8 more
europepmc   +1 more source

Chemical Recycling as a Tool for Enabling a Second Life for Polyesters

SusMat, EarlyView.
This review presents the elucidation of the life cycle of main polyesters, detailing end‐of‐life methods, with focus of solvolysis technologies, then an analysis of LCA and TEA on literature data, an original data analytic, and, finally, a current industrial mapping of the main processes with a critical perspective on the plastic life‐cycle ecosystem ...
Nícolas Soares Urruth, Cristian de Oliveira Romera, Caio Gomide Otoni, Bruno Francisco Oechsler, Pedro Henrique Hermes de Araújo, Claudia Sayer   +5 more
wiley   +1 more source

Construction of a Cu/Fe/S multi-active-site synergistic Fenton-like system <i>via</i> mechanically activated natural copper sulfide ore for efficient tetracycline degradation. [PDF]

RSC Adv
Gou L, Miao X, Liu Y, Zhang M, Guo M.
europepmc   +1 more source