Results 191 to 200 of about 11,301 (248)

Recovery of iron from iron tailings by co-pyrolysis with coal gangue: process optimization and economic evaluation. [PDF]

Sci Rep
Liu Z, Zhang F, Zheng G.
europepmc   +1 more source

Influence of an Electromagnetic Field on Direct Reduction of Iron Oxide Using Hydrogen as a Reducing Agent

steel research international, EarlyView.
This study investigates the reduction of pure iron oxides and industrial iron ore using hydrogen gas as a reducing agent. Additionally, to determine whether the reduction process can be accelerated, electromagnetic fields of 50 Hz and 25 kHz were applied.
Mykyta Levchenko, Oleksandr Gryshyn, Oleksandr Velychko, Oleksandr Grek, Anzhela Nadtochiy, Olena Volkova   +5 more
wiley   +1 more source

Multiscale Perspectives on Char Oxidation: Reaction Regimes, Transport Phenomena, and Modeling Challenges. [PDF]

ACS Omega
Yang J, Wu X, Yang L, Xu J, Wu S, Lai M.
europepmc   +1 more source

The Application of Hydrochar Composite Briquettes for Sustainable Slag Foaming in the Electric Arc Furnace Process

steel research international, EarlyView.
Hydrochar‐mill‐scale briquettes with varying C/O molar ratios (0.07–0.90) have been tested at 1650 °C to evaluate their slag foaming performance for electric arc furnace application. All seven briquette recipes developed succeed in promoting slag foaming.
Yu‐Chiao Lu, Andrey Karasev, Björn Glaser, Chuan Wang   +3 more
wiley   +1 more source

Mechanical performance of structural lightweight concrete with metallurgical coal aggregates. [PDF]

Sci Rep
Waleed T, Rady M, Mashhour IM, El-Attar M.   +3 more
europepmc   +1 more source

Sequential Reduction of Chromite Pellets Using Hydrogen and Silicon Carbide for Carbon Emission Abatement During Ferrochrome Production

steel research international, EarlyView.
H2 prereduction selectively metallizes Fe in UG2 chromite pellets at 1100°C, while silicon carbide becomes active at 1300°C to convert remaining Cr2O3 to carbides and promote Cr metallization. By separating the roles of H2 and SiC, the sequential route reaches up to 65.7% Cr metallization and suppresses in‐furnace CO generation by ≈75% versus ...
D. Coertzen, M. Tangstad, J. P. Beukes, P. G. van Zyl, D. G. Bessarabov, S. P. du Preez   +5 more
wiley   +1 more source

Freeze-Thaw Damage of Coal Gangue-Iron Tailings Sintered Porous Bricks in Cold Region Environments. [PDF]

Materials (Basel)
Li J, Lu S, Liu J, Fan S, Tang J, Li S, Li Z, Ren S, Liu Z.   +8 more
europepmc   +1 more source

Barriers to Steel Decarbonization

steel research international, EarlyView.
Main identified barriers to steel decarbonization Carbon dioxide (CO2) emissions are a leading contributor to global climate change, necessitating urgent mitigation strategies. While various metrics—such as total national emissions, per‐capita output, and historical contributions—define responsibility, determining accountability remains complex ...
Pasquale Cavaliere
wiley   +1 more source

Electrochemical Recovery of Rare-Earth Elements from Coal Fly Ash Using Ionic Liquids as both Extractant and Electrolyte. [PDF]

Environ Sci Technol
Tripathi A, Liu T, Bozeman JF, Huang CH, Xie X.   +4 more
europepmc   +1 more source

Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review

Safety Science and Technology, EarlyView.
This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou, Erlei Su, Huanchun Liu, Xiangjun Chen, Lin Wang, Haidong Chen, Lin Li   +6 more
wiley   +1 more source