microwave energy has potential for the efficient heating of minerals. minerals or materials, which couple to microwave energy are called dielectrics and many valuable minerals are found to be dielectric. the mineral ilmenite is one which shows good dielectric heating characteristics. in this paper, the effect of microwave heat energy on the partial reduction of oxidized ilmenite oxidized in ...

  Abstract   The effect of mechanical activation using an attrition mill on the particle size of an ilmenite concentrate and its effect on the ability of the concentrate for Iron separation during hydrochloric acid leaching and the kinetics of the dissolution process have been investigated. It was observed that mechanical activation in an attritor significantly enhances the dissolution of iron ...

We report the first natural occurrence of the Fe-analogue of akimotoite, ilmenite-structured MgSiO3, a missing phase among the predicted high-pressure polymorphs of Fe-pyroxene, with the composition (Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)Σ=1.00Si1.00O3. The new mineral was approved by the International Mineralogical Association (IMA 2016-085) and named hemleyite in honour of Russell ...

Biomass conversion with carbon capture and storage (Bio-Energy CCS; BECCS) is one of the options considered for mitigating climate change. In this paper, technology chemical-looping combustion (CLC) examined in which CO2 produced a stream separate from air. A central research topic CLC oxygen carriers; solid metal oxides that provide process. waste-derived fuels contain reactive ash compounds, ...

TIO2 MELT CONTENTS OF ILMENITE SATURATED RESIDUES. T. L. Grove, N. Chatterjee, S. J. Singletary and J. W. Delano, Dept. Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 54-1220, Cambridge, MA 02139, [email protected], Dept. of Natural Sciences, Fayetteville State University, Fayetteville, NC 28301, Dept. of Earth and Atmospheric Sciences, SUNY at Albany, Albany, N...

Ecuadorian black mineral sands were used as starting material for the production of iron-titanium oxide nanostructures. For this purpose, two types processing carried out, one incorporating a pre-treatment before conducting an alkaline hydrothermal synthesis (NaOH 10 M at 180 °C 72 h), and other prescinding first step. Nanosheet-assembled flowers nanoparticle agglomerates obtained from procedur...

Oxygen Carrier Aided Combustion is a novel fluidized bed concept for burning waste. This study analyzed solid samples from an industrial OCAC application using municipal waste and the oxygen carrier ilmenite. The presence of carriers impacts ash chemistry, which can influence corrosion characteristics. By investigating obtained applications, unique highly relevant information on solid-state che...

Introduction: The dominant cause for lunar visible color differences is variations in the degree of soil maturity and the abundance of FeO and opaque minerals, such as ilmenite. The addition of opaque minerals to a lunar soil tends to decrease the overall reflectance and continuum slope (darkens and decreases “redness”). As a soil weathers its reflectance is also lowered but its slope increases...

It is well known that oriented iron and titanium oxide inclusions occur in pyroxenes and plagioclase of anorthosites and granulites, and they are attributed to exsolution at subsolidus conditions. The oxides occur as needles or platelets. In this study, we determine the morphology of oxide needles as well as their orientation in plagioclase (An 30–35) in anorthosite gneiss from the Adirondack m...