Results 61 to 70 of about 323 (191)

Concomitant Mineral Carbonation and CO2 Reduction in Short‐Term Water‐Basalts Reaction: Difference Between Basaltic Glass and Basaltic Crystals

Global Challenges, Volume 10, Issue 8, August 2026.
Short‐term CO2–water reactions show that crystalline basalt undergoes more extensive carbonation than basaltic glass and is associated with detectable H2 and higher CO and CH4 concentrations. This contrast is consistent with the greater early reactivity of Fe‐ and Mg‐bearing crystalline phases, indicating that basalt mineralogy influences coupled ...
Andrea Pierozzi, Rémi Rateau, Andrea Orlando, Daniele Borrini, Franco Tassi, Juan Diego Rodriguez‐Blanco   +5 more
wiley   +1 more source

Effective Equilibrium Reaction Zone Modeling of Hydrogen Plasma Smelting Reduction: A Scenario Analysis

steel research international, Volume 97, Issue 8, Page 4138-4161, August 2026.
The study presents a dynamic zonal model for hydrogen plasma smelting reduction (HPSR) in direct current arc furnaces, predicting time‐dependent behavior of metal, slag, and off‐gas. The study considers various industrial scenarios to quantify energy demand, hydrogen utilization, degree of reduction, and other operational sensitivities.
Tristan K. Wickham, Stephanus P. Du Preez, Dmitri G. Bessarabov, Stephan C. Louw, Ernst L. J. Kleynhans   +4 more
wiley   +1 more source

Certified Reference Materials Preparation of Ilmenite Chemical Composition

Yankuang ceshi, 2014
At present, there are no ilmenite chemical composition certified reference materials, the closest being of vanadium-titanium magnetite ore composition.
HONG Fei, LIU Yao-hua, LV Zhen-sheng, ZHAO Wei, WANG Qing, ZHANG Ying-ming   +5 more
doaj   +2 more sources

The Temperature Rise Behavior and Microwave-absorbing Characteristics of Ilmenite Concentrate in Microwave Field

工程科学与技术, 2007
:The microwave-absorbing characteristics of ilmenite concentrate, coke, oxidized ilmenite concentrate and composite additive were investigated by means of microwave cavity perturbation, and their temperature rise curves were measured.
doaj  

Feasibility of Red Mud Recycling via Hydrogen Plasma Smelting Reduction: Insights From Large‐Scale Laboratory Experiments

steel research international, Volume 97, Issue 8, Page 4351-4362, August 2026.
Red mud processing in a laboratory hydrogen plasma facility, exceeding one hundred grams of input material, to evaluate the first scale‐up steps for iron recovery. This study demonstrates the feasibility of red mud reduction and the removal of harmful elements.
Daniel Ernst, Jürgen Erich Platl, Daniela Pircher, Magdalena Kirchmair, Lukas Kölbl, Johannes Schenk, Susanne Michelic   +6 more
wiley   +1 more source

Experimental study on the chemical and geo-chemical properties of a Fe3O4 dominated ore

Chemical Engineering Transactions, 2018
Dressing iron from the primary ores is the hot topic all the way. In our study, one primary magnetite iron ore was selected to analyze the chemical composition properties, and micro-sturctures of the mineerals. The results show that magnetite is the main
Yang Liu, Yulong Lu, Yu Hao
doaj   +1 more source

Automated Mineral Identification and Rock‐Type Classification of Lunar Mare Basalts Using SEM Images

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract We present an automated system for identifying minerals and classifying rock types in Apollo lunar mare basalts using scanning electron microscopy (SEM) imagery. Mineral segmentation is based on a U‐Net architecture, supplemented by two scale‐aware models designed to incorporate pixel size information.
Ji‐In Jung, Sonia M. Tikoo, Jaehong Chung, Claire I. O. Nichols   +3 more
wiley   +1 more source

Analysis of the Effect of Fluxing Additives in the Production of Titanium Slags in Laboratory Conditions

Metals
The article theoretically justified and experimentally confirmed the possibility of implementing the process of the electric melting of Satbayevskiy ilmenite concentrates with new fluxing additives based on oxides and nitrides of aluminium, calcium, and ...
Maxat K. Myrzakulov, Saltanat K. Dzhumankulova, Kassym K. Yelemessov, Madina B. Barmenshinova, Nikita V. Martyushev, Vadim Y. Skeeba, Viktor V. Kondratiev, Antonina I. Karlina   +7 more
doaj   +1 more source

Kamafugite Magma Pathways and Lava‐Flow Paleotopography From Three‐Dimensional Audiomagnetotelluric Imaging Constrained by Borehole Data

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract An audiomagnetotelluric (AMT) survey was conducted within the Alto Paranaíba Igneous Province, southeastern Brazil, to delineate shallow occurrences of kamafugite, a rare ultrapotassic volcanic rock worldwide. A dense grid of AMT stations was deployed, allowing the construction of a high‐resolution 3D electrical resistivity model ...
Lucca M. Franco, Emanuele F. La Terra, Liliane P. Panetto, Adevilson O. Alves, Miguel A. Tupinambá, Sergio L. Fontes, Emin U. Ulugergerli   +6 more
wiley   +1 more source

Oxygen Fugacity Buffers and an Interactive Calculator

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Oxygen fugacity buffers are equilibrium phase assemblages that constrain the chemical potential of oxygen. They may be coexisting minerals or fluids, or their metastable extrapolations. Oxygen fugacity values vary as a function of pressure and temperature, such that raw numbers often have little interpretive value.
Michael Anenburg
wiley   +1 more source